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| author | Inaam Rana <inaam.rana@oracle.com> | 2012-03-12 13:04:54 -0400 |
|---|---|---|
| committer | Inaam Rana <inaam.rana@oracle.com> | 2012-03-12 13:04:54 -0400 |
| commit | 273c626269cfcc7f20f1d0212d3aa3bff0c14f02 (patch) | |
| tree | e399bea2bd430c207d465745e14ba75ba5e7c236 /sql/sql_show.h | |
| parent | aaead0efb4adcb54509605f40a41c61539e74c7b (diff) | |
| download | mariadb-git-273c626269cfcc7f20f1d0212d3aa3bff0c14f02.tar.gz | |
Bug#13789853 SHOW ENGINE INNODB STATUS HANGS DUE TO EXCESSIVE WORK
IN LOCK_VALIDATE()
rb://917
approved by: Marko Makela
In lock_validate() the limit is used to release the kernel_mutex during
the validation, to obey the latching order.
If we do the limit++ then we are rechecking the same lock most times on
each iteration because limit is being incremented by one and
<space, page_no> will nearly always be > limit. If we set the limit
correctly to (space, page+1) then we are actually making progress
during the iteration.
Diffstat (limited to 'sql/sql_show.h')
0 files changed, 0 insertions, 0 deletions