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Bug#11766528 PERFORMANCE_SCHEMA TRACKS BOTH BINARY AND RELAY LOGS IN THE SAME EVENTS

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Before this fix, all the performance schema instrumentation for both the binary log
and the relay log would use the following instruments:
- wait/io/file/sql/binlog
- wait/io/file/sql/binlog_index
- wait/synch/mutex/sql/MYSQL_BIN_LOG::LOCK_index
- wait/synch/cond/sql/MYSQL_BIN_LOG::update_cond

This instrumentation is too general and can be more specific.

With this fix, the binlog instrumentation is identical,
and the relay log instrumentation is changed to:
- wait/io/file/sql/relaylog
- wait/io/file/sql/relaylog_index
- wait/synch/mutex/sql/MYSQL_RELAY_LOG::LOCK_index
- wait/synch/cond/sql/MYSQL_RELAY_LOG::update_cond

With this change, the performance instrumentation for the binary log and the relay log,
which share the same structure but have different uses, is more detailed.
This is especially important for hosts in the middle of a replication chain,
that are both masters (binlog) and slaves (relaylog).
This commit is contained in:
Marc Alff
2011-03-01 17:39:28 +01:00
parent 69b8293759
commit 5ee9001844
7 changed files with 270 additions and 10 deletions
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19
sql/mysqld.cc
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@ -3122,6 +3122,18 @@ static int init_common_variables()
*/
global_system_variables.time_zone= my_tz_SYSTEM;
#ifdef HAVE_PSI_INTERFACE
/*
Complete the mysql_bin_log initialization.
Instrumentation keys are known only after the performance schema initialization,
and can not be set in the MYSQL_BIN_LOG constructor (called before main()).
*/
mysql_bin_log.set_psi_keys(key_BINLOG_LOCK_index,
key_BINLOG_update_cond,
key_file_binlog,
key_file_binlog_index);
#endif
/*
Init mutexes for the global MYSQL_BIN_LOG objects.
As safe_mutex depends on what MY_INIT() does, we can't init the mutexes of
@ -7690,6 +7702,7 @@ PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_prep_xids,
key_structure_guard_mutex, key_TABLE_SHARE_LOCK_ha_data,
key_LOCK_error_messages, key_LOG_INFO_lock, key_LOCK_thread_count,
key_PARTITION_LOCK_auto_inc;
PSI_mutex_key key_RELAYLOG_LOCK_index;
static PSI_mutex_info all_server_mutexes[]=
{
@ -7706,6 +7719,7 @@ static PSI_mutex_info all_server_mutexes[]=
{ &key_BINLOG_LOCK_index, "MYSQL_BIN_LOG::LOCK_index", 0},
{ &key_BINLOG_LOCK_prep_xids, "MYSQL_BIN_LOG::LOCK_prep_xids", 0},
{ &key_RELAYLOG_LOCK_index, "MYSQL_RELAY_LOG::LOCK_index", 0},
{ &key_delayed_insert_mutex, "Delayed_insert::mutex", 0},
{ &key_hash_filo_lock, "hash_filo::lock", 0},
{ &key_LOCK_active_mi, "LOCK_active_mi", PSI_FLAG_GLOBAL},
@ -7773,6 +7787,7 @@ PSI_cond_key key_BINLOG_COND_prep_xids, key_BINLOG_update_cond,
key_relay_log_info_start_cond, key_relay_log_info_stop_cond,
key_TABLE_SHARE_cond, key_user_level_lock_cond,
key_COND_thread_count, key_COND_thread_cache, key_COND_flush_thread_cache;
PSI_cond_key key_RELAYLOG_update_cond;
static PSI_cond_info all_server_conds[]=
{
@ -7786,6 +7801,7 @@ static PSI_cond_info all_server_conds[]=
#endif /* HAVE_MMAP */
{ &key_BINLOG_COND_prep_xids, "MYSQL_BIN_LOG::COND_prep_xids", 0},
{ &key_BINLOG_update_cond, "MYSQL_BIN_LOG::update_cond", 0},
{ &key_RELAYLOG_update_cond, "MYSQL_RELAY_LOG::update_cond", 0},
{ &key_COND_cache_status_changed, "Query_cache::COND_cache_status_changed", 0},
{ &key_COND_manager, "COND_manager", PSI_FLAG_GLOBAL},
{ &key_COND_rpl_status, "COND_rpl_status", PSI_FLAG_GLOBAL},
@ -7849,6 +7865,7 @@ PSI_file_key key_file_binlog, key_file_binlog_index, key_file_casetest,
key_file_pid, key_file_relay_log_info, key_file_send_file, key_file_tclog,
key_file_trg, key_file_trn, key_file_init;
PSI_file_key key_file_query_log, key_file_slow_log;
PSI_file_key key_file_relaylog, key_file_relaylog_index;
static PSI_file_info all_server_files[]=
{
@ -7857,6 +7874,8 @@ static PSI_file_info all_server_files[]=
#endif /* HAVE_MMAP */
{ &key_file_binlog, "binlog", 0},
{ &key_file_binlog_index, "binlog_index", 0},
{ &key_file_relaylog, "relaylog", 0},
{ &key_file_relaylog_index, "relaylog_index", 0},
{ &key_file_casetest, "casetest", 0},
{ &key_file_dbopt, "dbopt", 0},
{ &key_file_des_key_file, "des_key_file", 0},