diff options
Diffstat (limited to 'storage/xtradb/handler/ha_innodb.cc')
| -rw-r--r-- | storage/xtradb/handler/ha_innodb.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/storage/xtradb/handler/ha_innodb.cc b/storage/xtradb/handler/ha_innodb.cc index b64f7701cf5..58b88c3f6c3 100644 --- a/storage/xtradb/handler/ha_innodb.cc +++ b/storage/xtradb/handler/ha_innodb.cc @@ -20412,6 +20412,12 @@ static MYSQL_SYSVAR_BOOL(scrub_force_testing, NULL, NULL, FALSE); #endif /* UNIV_DEBUG */ +static MYSQL_SYSVAR_BOOL(instrument_semaphores, srv_instrument_semaphores, + PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY, + "Enable semaphore request instrumentation. This could have some effect on performance but allows better" + " information on long semaphore wait problems. (Default: not enabled)", + 0, 0, FALSE); + static struct st_mysql_sys_var* innobase_system_variables[]= { MYSQL_SYSVAR(log_block_size), MYSQL_SYSVAR(additional_mem_pool_size), @@ -20646,7 +20652,7 @@ static struct st_mysql_sys_var* innobase_system_variables[]= { #ifdef UNIV_DEBUG MYSQL_SYSVAR(scrub_force_testing), #endif - + MYSQL_SYSVAR(instrument_semaphores), NULL }; |