diff options
Diffstat (limited to 'storage/innodb_plugin/srv/srv0srv.c')
| -rw-r--r-- | storage/innodb_plugin/srv/srv0srv.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/storage/innodb_plugin/srv/srv0srv.c b/storage/innodb_plugin/srv/srv0srv.c index f7e7e351bdc..b1fc1ac67fd 100644 --- a/storage/innodb_plugin/srv/srv0srv.c +++ b/storage/innodb_plugin/srv/srv0srv.c @@ -243,6 +243,11 @@ UNIV_INTERN ulong srv_max_buf_pool_modified_pct = 75; /* variable counts amount of data read in total (in bytes) */ UNIV_INTERN ulint srv_data_read = 0; +/* Internal setting for "innodb_stats_method". Decides how InnoDB treats +NULL value when collecting statistics. By default, it is set to +SRV_STATS_NULLS_EQUAL(0), ie. all NULL value are treated equal */ +ulong srv_innodb_stats_method = SRV_STATS_NULLS_EQUAL; + /* here we count the amount of data written in total (in bytes) */ UNIV_INTERN ulint srv_data_written = 0; @@ -2231,6 +2236,12 @@ srv_error_monitor_thread( ulint fatal_cnt = 0; ib_uint64_t old_lsn; ib_uint64_t new_lsn; + /* longest waiting thread for a semaphore */ + os_thread_id_t waiter = os_thread_get_curr_id(); + os_thread_id_t old_waiter = waiter; + /* the semaphore that is being waited for */ + const void* sema = NULL; + const void* old_sema = NULL; old_lsn = srv_start_lsn; @@ -2279,7 +2290,8 @@ loop: sync_arr_wake_threads_if_sema_free(); - if (sync_array_print_long_waits()) { + if (sync_array_print_long_waits(&waiter, &sema) + && sema == old_sema && os_thread_eq(waiter, old_waiter)) { fatal_cnt++; if (fatal_cnt > 10) { @@ -2294,6 +2306,8 @@ loop: } } else { fatal_cnt = 0; + old_waiter = waiter; + old_sema = sema; } /* Flush stderr so that a database user gets the output |