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Backport innodb_max_purge_lag from 4.1

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innobase/include/srv0srv.h:
  Add configuration parameter srv_max_purge_lag.
  Add global variable srv_dml_needed_delay.
innobase/include/trx0sys.h:
  Add trx_sys->rseg_history_len
innobase/row/row0mysql.c:
  Add row_mysql_delay_if_needed() for delaying INSERTs, UPDATEs and
  DELETEs for srv_dml_needed_delay microseconds.
innobase/srv/srv0srv.c:
  Define global variable srv_dml_needed_delay.
  Define configuration parameter srv_max_purge_lag.
innobase/trx/trx0purge.c:
  Update trx_sys->rseg_history_len.
  trx_purge(): Compute srv_dml_needed_delay from srv_max_purge_lag
  and trx_sys->rseg_history_len.
innobase/trx/trx0rseg.c:
  Initialize trx_sys->rseg_history_len at InnoDB start-up.
sql/ha_innodb.h:
  Add configuration parameter srv_max_purge_lag.
sql/mysqld.cc:
  Add startup option innodb_max_purge_lag,
  with default value 0 (meaning infinite, disabling the feature).
sql/set_var.cc:
  Add global variable innodb_max_purge_lag.
This commit is contained in:
unknown
2004-10-27 13:33:11 +03:00
parent 9abe7d272b
commit 743597ea96
9 changed files with 84 additions and 1 deletions
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2
innobase/include/srv0srv.h
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@ -99,6 +99,7 @@ extern ibool srv_use_doublewrite_buf;
extern ibool srv_set_thread_priorities;
extern int srv_query_thread_priority;
extern ulint srv_max_purge_lag;
/*-------------------------------------------*/
extern ulint srv_n_rows_inserted;
@ -152,6 +153,7 @@ extern ulint srv_test_array_size;
extern ulint srv_activity_count;
extern ulint srv_fatal_semaphore_wait_threshold;
extern ulint srv_dml_needed_delay;
extern mutex_t* kernel_mutex_temp;/* mutex protecting the server, trx structs,
query threads, and lock table: we allocate