Performance regression in PS 5.5.19+ in flushing
Bug #1037343 reported by
Vadim Tkachenko
This bug affects 3 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Percona Server moved to https://jira.percona.com/projects/PS |
Invalid
|
High
|
Unassigned |
Bug Description
This bug is created to report observed problem and to keep track of ongoing research.
In Percona Server 5.5.19 and newer we have regression in flushing area.
In intensive tpcc-mysql benchmark I am getting long periods with 0 tps.
It is not the case in 5.5.18.
I suspect the problem comes from new buf_flush_
which introduces innodb_
I suspect that innodb_
I am going to check it by replacing buf_flush_
Changed in percona-server: | |
milestone: | none → 5.5.28-29.0 |
tags: | added: i25632 |
no longer affects: | percona-server/5.5 |
Changed in percona-server: | |
status: | Confirmed → Invalid |
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Unfortunately just using old version of buf_flush_ try_neighbors does not help.
However it is very puzzling what would cause this regression, it requires an additional research.