Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.1.37
Description
Hello,
On enviroment with 3M tables and MariaDB 10.1.37, "server status;" is painfully slow, it tooks almost 10 seconds to complete query.
It's caused by dict_sys_get_size function that was introduced by fix of MDEV-13325. MariaDB spends almost whole time in this function.
It tooks about 0.01 seconds to complete this query on MariaDB 10.1.21.
--- aaa.c 2018-12-07 20:19:24.948128381 +0100
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+++ mariadb-10.1.37/storage/xtradb/dict/dict0dict.cc 2018-10-31 22:54:07.000000000 +0100
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@@ -25,9 +25,6 @@
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Created 1/8/1996 Heikki Tuuri
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***********************************************************************/
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-#include <time.h> |
-#include <sys/time.h> |
-
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#include "dict0dict.h"
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#include "fts0fts.h"
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#include "fil0fil.h"
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@@ -7258,8 +7255,6 @@
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ulint
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dict_sys_get_size()
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{
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- struct timeval t1, t2; |
- gettimeofday(&t1, NULL);
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ulint size = 0;
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ut_ad(dict_sys);
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@@ -7285,8 +7280,5 @@
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mutex_exit(&dict_sys->mutex);
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- gettimeofday(&t2, NULL);
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- ib_logf(IB_LOG_LEVEL_INFO, "call dict_sys_get_size: %f", (double) (t2.tv_sec - t1.tv_sec) + ((double) (t2.tv_usec - t1.tv_usec)) / 1000000); |
-
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return (size); |
}
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Dec 4 17:00:49 -------- mysqld: 2018-12-04 17:00:49 139919386642176 [Note] InnoDB: call dict_sys_get_size: 7.715302
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Dec 4 21:25:24 -------- mysqld: 2018-12-04 21:25:24 139919441475328 [Note] InnoDB: call dict_sys_get_size: 4.888833
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Attachments
Issue Links
- relates to
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- Closed
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