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MDEV-7108: Make long semaphore wait timeout configurable

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Merge Facebook commit cd063ab930
authored by Peng Tian from https://github.com/facebook/mysql-5.6

Introduced a new configuration variable innodb_fatal_semaphore_wait_threshold,
it makes the fatal semaphore timeout configurable. Modified original commit
so that no MariaDB server files are changed, instead introduced a new
InnoDB/XtraDB configuration variable.

Its default/min/max vlaues are 600/1/2^32-1 in seconds (it was hardcoded
as 600, now its default value is 600, so the default behavior of this diff
should be no change).
This commit is contained in:
Jan Lindström
2014-11-17 09:55:55 +02:00
parent ea83226872
commit 7bf391c205
14 changed files with 246 additions and 8 deletions
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6
storage/xtradb/include/srv0srv.h
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@@ -585,7 +585,6 @@ extern my_bool srv_ibuf_disable_background_merge;
extern my_bool srv_purge_view_update_only_debug;
#endif /* UNIV_DEBUG */
extern ulint srv_fatal_semaphore_wait_threshold;
#define SRV_SEMAPHORE_WAIT_EXTENSION 7200
extern ulint srv_dml_needed_delay;
extern long long srv_kill_idle_transaction;
@@ -670,6 +669,11 @@ extern my_bool srv_fake_changes_locks;
/** Simulate compression failures. */
extern uint srv_simulate_comp_failures;
/** Fatal semaphore wait threshold = maximum number of seconds
that semaphore times out in InnoDB */
#define DEFAULT_SRV_FATAL_SEMAPHORE_TIMEOUT 600
extern ulong srv_fatal_semaphore_wait_threshold;
# ifdef UNIV_PFS_THREAD
/* Keys to register InnoDB threads with performance schema */
extern mysql_pfs_key_t buf_page_cleaner_thread_key;