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03ca6495df
InnoDB buffer pool block and index tree latches depend on a
special kind of read-update-write lock that allows reentrant
(recursive) acquisition of the 'update' and 'write' locks
as well as an upgrade from 'update' lock to 'write' lock.
The 'update' lock allows any number of reader locks from
other threads, but no concurrent 'update' or 'write' lock.
If there were no requirement to support an upgrade from 'update'
to 'write', we could compose the lock out of two srw_lock
(implemented as any type of native rw-lock, such as SRWLOCK on
Microsoft Windows). Removing this requirement is very difficult,
so in commit f7e7f487d4b06695f91f6fbeb0396b9d87fc7bbf we
implemented an 'update' mode to our srw_lock.
Re-entrant or recursive locking is mostly needed when writing or
freeing BLOB pages, but also in crash recovery or when merging
buffered changes to an index page. The re-entrancy allows us to
attach a previously acquired page to a sub-mini-transaction that
will be committed before whatever else is holding the page latch.
The SUX lock supports Shared ('read'), Update, and eXclusive ('write')
locking modes. The S latches are not re-entrant, but a single S latch
may be acquired even if the thread already holds an U latch.
The idea of the U latch is to allow a write of something that concurrent
readers do not care about (such as the contents of BTR_SEG_LEAF,
BTR_SEG_TOP and other page allocation metadata structures, or
the MDEV-6076 PAGE_ROOT_AUTO_INC). (The PAGE_ROOT_AUTO_INC field
is only updated when a dict_table_t for the table exists, and only
read when a dict_table_t for the table is being added to dict_sys.)
block_lock::u_lock_try(bool for_io=true) is used in buf_flush_page()
to allow concurrent readers but no concurrent modifications while the
page is being written to the data file. That latch will be released
by buf_page_write_complete() in a different thread. Hence, we use
the special lock owner value FOR_IO.
The index_lock::u_lock() improves concurrency on operations that
involve non-leaf index pages.
The interface has been cleaned up a little. We will use
x_lock_recursive() instead of x_lock() when we know that a
lock is already held by the current thread. Similarly,
a lock upgrade from U to X is only allowed via u_x_upgrade()
or x_lock_upgraded() but not via x_lock().
We will disable the LatchDebug and sync_array interfaces to
InnoDB rw-locks.
The SEMAPHORES section of SHOW ENGINE INNODB STATUS output
will no longer include any information about InnoDB rw-locks,
only TTASEventMutex (cmake -DMUTEXTYPE=event) waits.
This will make a part of the 'innotop' script dead code.
The block_lock buf_block_t::lock will not be covered by any
PERFORMANCE_SCHEMA instrumentation.
SHOW ENGINE INNODB MUTEX and INFORMATION_SCHEMA.INNODB_MUTEXES
will no longer output source code file names or line numbers.
The dict_index_t::lock will be identified by index and table names,
which should be much more useful. PERFORMANCE_SCHEMA is lumping
information about all dict_index_t::lock together as
event_name='wait/synch/sxlock/innodb/index_tree_rw_lock'.
buf_page_free(): Remove the file,line parameters. The sux_lock will
not store such diagnostic information.
buf_block_dbg_add_level(): Define as empty macro, to be removed
in a subsequent commit.
Unless the build was configured with cmake -DPLUGIN_PERFSCHEMA=NO
the index_lock dict_index_t::lock will be instrumented via
PERFORMANCE_SCHEMA. Similar to
commit 1669c8890c
we will distinguish lock waits by registering shared_lock,exclusive_lock
events instead of try_shared_lock,try_exclusive_lock.
Actual 'try' operations will not be instrumented at all.
rw_lock_list: Remove. After MDEV-24167, this only covered
buf_block_t::lock and dict_index_t::lock. We will output their
information by traversing buf_pool or dict_sys.
783 lines
28 KiB
Plaintext
783 lines
28 KiB
Plaintext
set global innodb_monitor_disable = All;
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select name, if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics;
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name status
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metadata_table_handles_opened disabled
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metadata_table_handles_closed disabled
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metadata_table_reference_count disabled
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lock_deadlocks disabled
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lock_timeouts disabled
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lock_rec_lock_waits disabled
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lock_table_lock_waits disabled
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lock_rec_lock_requests disabled
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lock_rec_lock_created disabled
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lock_rec_lock_removed disabled
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lock_rec_locks disabled
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lock_table_lock_created disabled
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lock_table_lock_removed disabled
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lock_table_locks disabled
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lock_row_lock_current_waits disabled
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lock_row_lock_time disabled
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lock_row_lock_time_max disabled
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lock_row_lock_waits disabled
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lock_row_lock_time_avg disabled
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buffer_pool_size disabled
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buffer_pool_reads disabled
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buffer_pool_read_requests disabled
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buffer_pool_write_requests disabled
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buffer_pool_wait_free disabled
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buffer_pool_read_ahead disabled
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buffer_pool_read_ahead_evicted disabled
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buffer_pool_pages_total disabled
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buffer_pool_pages_misc disabled
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buffer_pool_pages_data disabled
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buffer_pool_bytes_data disabled
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buffer_pool_pages_dirty disabled
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buffer_pool_bytes_dirty disabled
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buffer_pool_pages_free disabled
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buffer_pages_created disabled
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buffer_pages_written disabled
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buffer_index_pages_written disabled
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buffer_non_index_pages_written disabled
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buffer_pages_read disabled
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buffer_index_sec_rec_cluster_reads disabled
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buffer_index_sec_rec_cluster_reads_avoided disabled
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buffer_data_reads disabled
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buffer_data_written disabled
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buffer_flush_batch_scanned disabled
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buffer_flush_batch_num_scan disabled
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buffer_flush_batch_scanned_per_call disabled
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buffer_flush_batch_total_pages disabled
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buffer_flush_batches disabled
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buffer_flush_batch_pages disabled
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buffer_flush_neighbor_total_pages disabled
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buffer_flush_neighbor disabled
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buffer_flush_neighbor_pages disabled
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buffer_flush_n_to_flush_requested disabled
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buffer_flush_n_to_flush_by_age disabled
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buffer_flush_adaptive_avg_time disabled
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buffer_flush_adaptive_avg_pass disabled
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buffer_LRU_get_free_loops disabled
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buffer_LRU_get_free_waits disabled
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buffer_flush_avg_page_rate disabled
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buffer_flush_lsn_avg_rate disabled
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buffer_flush_pct_for_dirty disabled
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buffer_flush_pct_for_lsn disabled
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buffer_flush_sync_waits disabled
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buffer_flush_adaptive_total_pages disabled
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buffer_flush_adaptive disabled
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buffer_flush_adaptive_pages disabled
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buffer_flush_sync_total_pages disabled
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buffer_flush_sync disabled
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buffer_flush_sync_pages disabled
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buffer_flush_background_total_pages disabled
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buffer_flush_background disabled
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buffer_flush_background_pages disabled
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buffer_LRU_batch_scanned disabled
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buffer_LRU_batch_num_scan disabled
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buffer_LRU_batch_scanned_per_call disabled
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buffer_LRU_batch_flush_total_pages disabled
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buffer_LRU_batches_flush disabled
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buffer_LRU_batch_flush_pages disabled
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buffer_LRU_batch_evict_total_pages disabled
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buffer_LRU_batches_evict disabled
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buffer_LRU_batch_evict_pages disabled
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buffer_LRU_single_flush_failure_count disabled
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buffer_LRU_get_free_search disabled
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buffer_LRU_search_scanned disabled
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buffer_LRU_search_num_scan disabled
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buffer_LRU_search_scanned_per_call disabled
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buffer_LRU_unzip_search_scanned disabled
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buffer_LRU_unzip_search_num_scan disabled
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buffer_LRU_unzip_search_scanned_per_call disabled
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buffer_page_read_index_leaf disabled
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buffer_page_read_index_non_leaf disabled
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buffer_page_read_index_ibuf_leaf disabled
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buffer_page_read_index_ibuf_non_leaf disabled
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buffer_page_read_undo_log disabled
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buffer_page_read_index_inode disabled
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buffer_page_read_ibuf_free_list disabled
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buffer_page_read_ibuf_bitmap disabled
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buffer_page_read_system_page disabled
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buffer_page_read_trx_system disabled
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buffer_page_read_fsp_hdr disabled
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buffer_page_read_xdes disabled
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buffer_page_read_blob disabled
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buffer_page_read_zblob disabled
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buffer_page_read_zblob2 disabled
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buffer_page_read_other disabled
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buffer_page_written_index_leaf disabled
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buffer_page_written_index_non_leaf disabled
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buffer_page_written_index_ibuf_leaf disabled
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buffer_page_written_index_ibuf_non_leaf disabled
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buffer_page_written_undo_log disabled
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buffer_page_written_index_inode disabled
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buffer_page_written_ibuf_free_list disabled
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buffer_page_written_ibuf_bitmap disabled
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buffer_page_written_system_page disabled
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buffer_page_written_trx_system disabled
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buffer_page_written_fsp_hdr disabled
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buffer_page_written_xdes disabled
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buffer_page_written_blob disabled
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buffer_page_written_zblob disabled
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buffer_page_written_zblob2 disabled
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buffer_page_written_other disabled
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os_data_reads disabled
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os_data_writes disabled
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os_data_fsyncs disabled
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os_pending_reads disabled
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os_pending_writes disabled
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os_log_bytes_written disabled
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os_log_fsyncs disabled
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os_log_pending_fsyncs disabled
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os_log_pending_writes disabled
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trx_rw_commits disabled
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trx_ro_commits disabled
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trx_nl_ro_commits disabled
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trx_commits_insert_update disabled
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trx_rollbacks disabled
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trx_rollbacks_savepoint disabled
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trx_active_transactions disabled
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trx_rseg_history_len disabled
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trx_undo_slots_used disabled
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trx_undo_slots_cached disabled
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trx_rseg_current_size disabled
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purge_del_mark_records disabled
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purge_upd_exist_or_extern_records disabled
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purge_invoked disabled
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purge_undo_log_pages disabled
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purge_dml_delay_usec disabled
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purge_stop_count disabled
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purge_resume_count disabled
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log_checkpoints disabled
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log_lsn_last_flush disabled
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log_lsn_last_checkpoint disabled
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log_lsn_current disabled
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log_lsn_checkpoint_age disabled
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log_lsn_buf_pool_oldest disabled
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log_max_modified_age_async disabled
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log_pending_log_flushes disabled
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log_pending_checkpoint_writes disabled
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log_num_log_io disabled
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log_waits disabled
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log_write_requests disabled
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log_writes disabled
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log_padded disabled
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compress_pages_compressed disabled
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compress_pages_decompressed disabled
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compression_pad_increments disabled
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compression_pad_decrements disabled
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compress_saved disabled
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compress_pages_page_compressed disabled
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compress_page_compressed_trim_op disabled
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compress_pages_page_decompressed disabled
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compress_pages_page_compression_error disabled
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compress_pages_encrypted disabled
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compress_pages_decrypted disabled
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index_page_splits disabled
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index_page_merge_attempts disabled
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index_page_merge_successful disabled
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index_page_reorg_attempts disabled
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index_page_reorg_successful disabled
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index_page_discards disabled
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adaptive_hash_searches disabled
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adaptive_hash_searches_btree disabled
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adaptive_hash_pages_added disabled
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adaptive_hash_pages_removed disabled
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adaptive_hash_rows_added disabled
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adaptive_hash_rows_removed disabled
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adaptive_hash_rows_deleted_no_hash_entry disabled
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adaptive_hash_rows_updated disabled
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file_num_open_files disabled
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ibuf_merges_insert disabled
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ibuf_merges_delete_mark disabled
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ibuf_merges_delete disabled
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ibuf_merges_discard_insert disabled
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ibuf_merges_discard_delete_mark disabled
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ibuf_merges_discard_delete disabled
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ibuf_merges disabled
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ibuf_size disabled
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innodb_master_thread_sleeps disabled
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innodb_activity_count disabled
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innodb_master_active_loops disabled
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innodb_master_idle_loops disabled
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innodb_background_drop_table_usec disabled
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innodb_log_flush_usec disabled
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innodb_dict_lru_usec disabled
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innodb_dict_lru_count_active disabled
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innodb_dict_lru_count_idle disabled
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innodb_dblwr_writes disabled
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innodb_dblwr_pages_written disabled
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innodb_page_size disabled
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dml_reads disabled
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dml_inserts disabled
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dml_deletes disabled
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dml_updates disabled
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dml_system_reads disabled
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dml_system_inserts disabled
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dml_system_deletes disabled
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dml_system_updates disabled
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ddl_background_drop_indexes disabled
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ddl_background_drop_tables disabled
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ddl_online_create_index disabled
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ddl_pending_alter_table disabled
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ddl_sort_file_alter_table disabled
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ddl_log_file_alter_table disabled
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icp_attempts disabled
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icp_no_match disabled
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icp_out_of_range disabled
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icp_match disabled
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set global innodb_monitor_enable = all;
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select name from information_schema.innodb_metrics where not enabled;
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name
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set global innodb_monitor_enable = aaa;
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ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of 'aaa'
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set global innodb_monitor_disable = All;
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select name from information_schema.innodb_metrics where enabled;
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name
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set global innodb_monitor_reset_all = all;
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select name from information_schema.innodb_metrics where count!=0;
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name
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set global innodb_monitor_enable = "%lock%";
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select name from information_schema.innodb_metrics
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where enabled != (name like "%lock%");
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name
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set global innodb_monitor_disable = "%lock%";
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select name, if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name like "%lock%";
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name status
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lock_deadlocks disabled
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lock_timeouts disabled
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lock_rec_lock_waits disabled
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lock_table_lock_waits disabled
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lock_rec_lock_requests disabled
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lock_rec_lock_created disabled
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lock_rec_lock_removed disabled
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lock_rec_locks disabled
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lock_table_lock_created disabled
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lock_table_lock_removed disabled
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lock_table_locks disabled
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lock_row_lock_current_waits disabled
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lock_row_lock_time disabled
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lock_row_lock_time_max disabled
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lock_row_lock_waits disabled
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lock_row_lock_time_avg disabled
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set global innodb_monitor_enable = "%lock*";
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ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of '%lock*'
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set global innodb_monitor_enable="%%%%%%%%%%%%%%%%%%%%%%%%%%%";
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select name from information_schema.innodb_metrics where not enabled;
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name
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set global innodb_monitor_disable="%%%%%";
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select name from information_schema.innodb_metrics where enabled;
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name
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set global innodb_monitor_enable="%";
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select name from information_schema.innodb_metrics where not enabled;
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name
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set global innodb_monitor_disable="%_%";
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select name from information_schema.innodb_metrics where enabled;
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name
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set global innodb_monitor_enable="log%%%%";
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select name from information_schema.innodb_metrics
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where enabled != (name like "log%");
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name
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set global innodb_monitor_enable="os_%a_fs_ncs";
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set global innodb_monitor_enable="os%pending%";
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select name, if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name like "os%";
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name status
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os_data_reads disabled
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os_data_writes disabled
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os_data_fsyncs enabled
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os_pending_reads enabled
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os_pending_writes enabled
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os_log_bytes_written disabled
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os_log_fsyncs disabled
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os_log_pending_fsyncs enabled
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os_log_pending_writes enabled
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set global innodb_monitor_enable="";
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ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of ''
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set global innodb_monitor_enable="_";
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ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of '_'
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SET global innodb_monitor_disable = module_metadata;
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SET global innodb_monitor_reset_all = module_metadata;
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set global innodb_monitor_enable = metadata_table_handles_opened;
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create table monitor_test(col int) engine = innodb;
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select * from monitor_test;
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col
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 1 NULL 1 1 NULL 1 enabled
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set global innodb_monitor_reset = metadata_table_handles_opened;
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 1 NULL 1 NULL NULL 0 enabled
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drop table monitor_test;
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create table monitor_test(col int) engine = innodb;
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select * from monitor_test;
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col
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 2 NULL 2 1 NULL 1 enabled
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set global innodb_monitor_reset_all = metadata_table_handles_opened;
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 2 NULL 2 1 NULL 1 enabled
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set global innodb_monitor_disable = metadata_table_handles_opened;
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set global innodb_monitor_reset = metadata_table_handles_opened;
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 2 NULL 2 NULL NULL 0 disabled
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drop table monitor_test;
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create table monitor_test(col int) engine = innodb;
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select * from monitor_test;
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col
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 2 NULL 2 NULL NULL 0 disabled
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set global innodb_monitor_reset_all = metadata_table_handles_opened;
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened NULL NULL 0 NULL NULL 0 disabled
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set global innodb_monitor_enable = metadata_table_handles_opened;
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drop table monitor_test;
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create table monitor_test(col int) engine = innodb stats_persistent=0;
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select * from monitor_test;
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col
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select name, max_count, min_count, count,
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max_count_reset, min_count_reset, count_reset,
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if(enabled,'enabled','disabled') status
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from information_schema.innodb_metrics
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where name = "metadata_table_handles_opened";
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name max_count min_count count max_count_reset min_count_reset count_reset status
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metadata_table_handles_opened 1 NULL 1 1 NULL 1 enabled
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set global innodb_monitor_enable = metadata_table_handles_closed;
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create index idx on monitor_test(col);
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name = "metadata_table_handles_closed";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
metadata_table_handles_closed 1 NULL 1 1 NULL 1 enabled
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "metadata%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
metadata_table_handles_opened 1 NULL 1 1 NULL 1 enabled
|
|
metadata_table_handles_closed 1 NULL 1 1 NULL 1 enabled
|
|
metadata_table_reference_count NULL NULL 0 NULL NULL 0 disabled
|
|
set global innodb_monitor_disable = module_metadata;
|
|
set global innodb_monitor_reset = module_metadata;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "metadata%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
metadata_table_handles_opened 1 NULL 1 NULL NULL 0 disabled
|
|
metadata_table_handles_closed 1 NULL 1 NULL NULL 0 disabled
|
|
metadata_table_reference_count NULL NULL 0 NULL NULL 0 disabled
|
|
set global innodb_monitor_reset_all = module_metadata;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "metadata%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
metadata_table_handles_opened NULL NULL 0 NULL NULL 0 disabled
|
|
metadata_table_handles_closed NULL NULL 0 NULL NULL 0 disabled
|
|
metadata_table_reference_count NULL NULL 0 NULL NULL 0 disabled
|
|
set global innodb_monitor_enable = module_trx;
|
|
begin;
|
|
insert into monitor_test values(9);
|
|
commit;
|
|
begin;
|
|
insert into monitor_test values(9);
|
|
rollback;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "trx_rollbacks" or name like "trx_active_transactions";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
trx_rollbacks 1 NULL 1 1 NULL 1 enabled
|
|
trx_active_transactions 1 0 0 1 0 0 enabled
|
|
set global innodb_monitor_disable = module_trx;
|
|
set global innodb_monitor_enable = module_dml;
|
|
insert into monitor_test values(9);
|
|
update monitor_test set col = 10 where col = 9;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 4 NULL 4 4 NULL 4 enabled
|
|
dml_inserts 1 NULL 1 1 NULL 1 enabled
|
|
dml_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_updates 2 NULL 2 2 NULL 2 enabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 enabled
|
|
delete from monitor_test;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 6 NULL 6 6 NULL 6 enabled
|
|
dml_inserts 1 NULL 1 1 NULL 1 enabled
|
|
dml_deletes 2 NULL 2 2 NULL 2 enabled
|
|
dml_updates 2 NULL 2 2 NULL 2 enabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 enabled
|
|
set global innodb_monitor_reset = module_dml;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 6 NULL 6 0 NULL 0 enabled
|
|
dml_inserts 1 NULL 1 0 NULL 0 enabled
|
|
dml_deletes 2 NULL 2 0 NULL 0 enabled
|
|
dml_updates 2 NULL 2 0 NULL 0 enabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 enabled
|
|
insert into monitor_test values(9);
|
|
insert into monitor_test values(1);
|
|
delete from monitor_test;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 8 NULL 8 2 NULL 2 enabled
|
|
dml_inserts 3 NULL 3 2 NULL 2 enabled
|
|
dml_deletes 4 NULL 4 2 NULL 2 enabled
|
|
dml_updates 2 NULL 2 0 NULL 0 enabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 enabled
|
|
set global innodb_monitor_reset_all = module_dml;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 8 NULL 8 2 NULL 2 enabled
|
|
dml_inserts 3 NULL 3 2 NULL 2 enabled
|
|
dml_deletes 4 NULL 4 2 NULL 2 enabled
|
|
dml_updates 2 NULL 2 0 NULL 0 enabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 enabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 enabled
|
|
set global innodb_monitor_disable = module_dml;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads 8 NULL 8 2 NULL 2 disabled
|
|
dml_inserts 3 NULL 3 2 NULL 2 disabled
|
|
dml_deletes 4 NULL 4 2 NULL 2 disabled
|
|
dml_updates 2 NULL 2 0 NULL 0 disabled
|
|
dml_system_reads 0 NULL 0 0 NULL 0 disabled
|
|
dml_system_inserts 0 NULL 0 0 NULL 0 disabled
|
|
dml_system_deletes 0 NULL 0 0 NULL 0 disabled
|
|
dml_system_updates 0 NULL 0 0 NULL 0 disabled
|
|
set global innodb_monitor_reset_all = module_dml;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads NULL NULL 0 NULL NULL 0 disabled
|
|
dml_inserts NULL NULL 0 NULL NULL 0 disabled
|
|
dml_deletes NULL NULL 0 NULL NULL 0 disabled
|
|
dml_updates NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_reads NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_inserts NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_deletes NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_updates NULL NULL 0 NULL NULL 0 disabled
|
|
set global innodb_monitor_enable = dml_inserts;
|
|
insert into monitor_test values(9);
|
|
insert into monitor_test values(1);
|
|
delete from monitor_test;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "dml%";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
dml_reads NULL NULL 0 NULL NULL 0 disabled
|
|
dml_inserts 2 NULL 2 2 NULL 2 enabled
|
|
dml_deletes NULL NULL 0 NULL NULL 0 disabled
|
|
dml_updates NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_reads NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_inserts NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_deletes NULL NULL 0 NULL NULL 0 disabled
|
|
dml_system_updates NULL NULL 0 NULL NULL 0 disabled
|
|
set global innodb_monitor_disable = module_dml;
|
|
drop table monitor_test;
|
|
set global innodb_monitor_enable = file_num_open_files;
|
|
select name, max_count, min_count, count,
|
|
max_count_reset, min_count_reset, count_reset,
|
|
if(enabled,'enabled','disabled') status
|
|
from information_schema.innodb_metrics
|
|
where name like "file_num_open_files";
|
|
name max_count min_count count max_count_reset min_count_reset count_reset status
|
|
file_num_open_files # # # # # # enabled
|
|
set global innodb_monitor_disable = file_num_open_files;
|
|
set global innodb_monitor_enable = "icp%";
|
|
create table monitor_test(a char(3), b int, c char(2),
|
|
primary key (a(1), c(1)), key(b)) engine = innodb;
|
|
insert into monitor_test values("13", 2, "aa");
|
|
select a from monitor_test where b < 1 for update;
|
|
a
|
|
select name, count from information_schema.innodb_metrics
|
|
where name like "icp%";
|
|
name count
|
|
icp_attempts 1
|
|
icp_no_match 0
|
|
icp_out_of_range 1
|
|
icp_match 0
|
|
select a from monitor_test where b < 3 for update;
|
|
a
|
|
13
|
|
select name, count from information_schema.innodb_metrics
|
|
where name like "icp%";
|
|
name count
|
|
icp_attempts 2
|
|
icp_no_match 0
|
|
icp_out_of_range 1
|
|
icp_match 1
|
|
drop table monitor_test;
|
|
set global innodb_monitor_disable = All;
|
|
set global innodb_monitor_reset_all = all;
|
|
select 1 from `information_schema`.`INNODB_METRICS`
|
|
where case (1) when (1) then (AVG_COUNT_RESET) else (1) end;
|
|
1
|
|
set global innodb_monitor_enable = default;
|
|
set global innodb_monitor_disable = default;
|
|
set global innodb_monitor_reset = default;
|
|
set global innodb_monitor_reset_all = default;
|
|
#
|
|
# Bug#22576241 SETTING INNODB_MONITOR_ENABLE TO ALL DOES NOT ENABLE ALL
|
|
# MONITORS
|
|
#
|
|
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 0
|
|
SET GLOBAL innodb_monitor_enable='module_buffer_page';
|
|
INSERT INTO t1 VALUES (1), (2), (3), (4);
|
|
FLUSH TABLES t1 FOR EXPORT;
|
|
UNLOCK TABLES;
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 1
|
|
SET GLOBAL innodb_monitor_disable='module_buffer_page';
|
|
SET GLOBAL innodb_monitor_reset_all='module_buffer_page';
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 0
|
|
SET GLOBAL innodb_monitor_enable='%';
|
|
INSERT INTO t1 VALUES (5), (6), (7), (8);
|
|
FLUSH TABLES t1 FOR EXPORT;
|
|
UNLOCK TABLES;
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 1
|
|
SET GLOBAL innodb_monitor_disable='%';
|
|
SET GLOBAL innodb_monitor_reset_all='%';
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 0
|
|
SET GLOBAL innodb_monitor_enable='ALL';
|
|
INSERT INTO t1 VALUES (9), (10), (11), (12);
|
|
FLUSH TABLES t1 FOR EXPORT;
|
|
UNLOCK TABLES;
|
|
SELECT NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
LIKE 'buffer_page_written_index_leaf';
|
|
NAME COUNT > 0
|
|
buffer_page_written_index_leaf 1
|
|
DROP TABLE t1;
|
|
CREATE TABLE fl0 (
|
|
id INT NOT NULL PRIMARY KEY
|
|
) ENGINE = InnoDB;
|
|
CREATE TABLE fl1 (
|
|
id INT NOT NULL PRIMARY KEY,
|
|
fl0_id INT,
|
|
CONSTRAINT `fkl0`
|
|
FOREIGN KEY (fl0_id) REFERENCES fl0 (id)
|
|
ON DELETE CASCADE
|
|
ON UPDATE RESTRICT
|
|
) ENGINE = InnoDB;
|
|
CREATE TABLE fl2 (
|
|
id INT NOT NULL PRIMARY KEY,
|
|
fl1_id INT,
|
|
CONSTRAINT `fkl1`
|
|
FOREIGN KEY (fl1_id) REFERENCES fl1 (id)
|
|
ON DELETE CASCADE
|
|
ON UPDATE SET NULL
|
|
) ENGINE = InnoDB;
|
|
INSERT INTO fl0 VALUES (1000);
|
|
INSERT INTO fl1 VALUES (500, 1000), (1500, 1000);
|
|
INSERT INTO fl2 VALUES (200, 500), (800, 500), (1200, 1500), (1800, 1500);
|
|
CREATE TABLE t1(id INT PRIMARY KEY, a INT, b CHAR(1), UNIQUE KEY u(a,b))
|
|
ENGINE=InnoDB;
|
|
SET @start = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
= 'lock_rec_lock_created');
|
|
BEGIN;
|
|
INSERT INTO t1 VALUES(1,1,'a'),(2,9999,'b'),(3,10000,'c'),(4,4,'d');
|
|
DELETE FROM t1 WHERE a = 9999 AND b='b';
|
|
COMMIT;
|
|
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
|
|
= 'lock_rec_lock_created');
|
|
SELECT @end - @start;
|
|
@end - @start
|
|
0
|
|
# Records must not be S/X-locked if a table is X-locked.
|
|
SET @start = @end;
|
|
SET autocommit = 0;
|
|
BEGIN;
|
|
LOCK TABLE t1 WRITE;
|
|
SELECT * FROM t1;
|
|
id a b
|
|
1 1 a
|
|
4 4 d
|
|
3 10000 c
|
|
SELECT * FROM t1 WHERE a>=10000;
|
|
id a b
|
|
3 10000 c
|
|
SELECT * FROM t1 FOR UPDATE;
|
|
id a b
|
|
1 1 a
|
|
4 4 d
|
|
3 10000 c
|
|
SELECT * FROM t1 WHERE a>=10000 FOR UPDATE;
|
|
id a b
|
|
3 10000 c
|
|
UPDATE t1 SET b = 'b' WHERE id = 4;
|
|
UPDATE t1 SET b = 'b' WHERE a = 10000;
|
|
REPLACE INTO t1 VALUES (4,3,'a');
|
|
INSERT INTO t1 VALUES (3,1,'e') ON DUPLICATE KEY UPDATE b = 'b';
|
|
INSERT INTO t1 VALUES (5,5,'e');
|
|
DELETE FROM t1 WHERE a = 1 AND b='a';
|
|
DELETE FROM t1;
|
|
COMMIT;
|
|
UNLOCK TABLES;
|
|
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
|
|
SELECT @end - @start;
|
|
@end - @start
|
|
0
|
|
# Records must not be S-locked if a table is S-locked.
|
|
SET @start = @end;
|
|
BEGIN;
|
|
LOCK TABLE t1 WRITE;
|
|
INSERT INTO t1 VALUES(1,1,'a'),(2,9999,'b'),(3,10000,'c'),(4,4,'d');
|
|
DELETE FROM t1 WHERE a = 9999 AND b='b';
|
|
COMMIT;
|
|
UNLOCK TABLES;
|
|
BEGIN;
|
|
LOCK TABLE t1 READ;
|
|
SELECT * FROM t1 LOCK IN SHARE MODE;
|
|
id a b
|
|
1 1 a
|
|
4 4 d
|
|
3 10000 c
|
|
SELECT * FROM t1 WHERE a>=10000 LOCK IN SHARE MODE;
|
|
id a b
|
|
3 10000 c
|
|
COMMIT;
|
|
UNLOCK TABLES;
|
|
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
|
|
SELECT @end - @start;
|
|
@end - @start
|
|
0
|
|
# Records must not be S-locked for foreign keys enforcement
|
|
SET @start = @end;
|
|
BEGIN;
|
|
LOCK TABLE fl0 READ, fl1 READ, fl2 WRITE;
|
|
INSERT INTO fl2 VALUES (300, 500), (700, 500), (1300, 1500), (1700, 1500);
|
|
SELECT * FROM fl1 LOCK IN SHARE MODE;
|
|
id fl0_id
|
|
500 1000
|
|
1500 1000
|
|
COMMIT;
|
|
UNLOCK TABLES;
|
|
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
|
|
SELECT @end - @start;
|
|
@end - @start
|
|
0
|
|
# Records must not be X-locked for foreign keys cascade
|
|
SET @start = @end;
|
|
BEGIN;
|
|
LOCK TABLE fl0 READ, fl1 WRITE, fl2 WRITE;
|
|
DELETE FROM fl1 WHERE id = 1500;
|
|
UPDATE fl1 SET id = 2500 WHERE id = 500;
|
|
COMMIT;
|
|
UNLOCK TABLES;
|
|
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
|
|
SELECT @end - @start;
|
|
@end - @start
|
|
0
|
|
SET autocommit = default;
|
|
DROP TABLE t1;
|
|
DROP TABLE fl2;
|
|
DROP TABLE fl1;
|
|
DROP TABLE fl0;
|
|
SET GLOBAL innodb_monitor_enable=default;
|
|
SET GLOBAL innodb_monitor_disable=default;
|
|
SET GLOBAL innodb_monitor_reset_all=default;
|