Percona Server moved to https://jira.percona.com/projects/PS

Port a workaround in threadpool for buggy epoll() from MariaDB

Bug #1157356 reported by Alexey Kopytov
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Percona Server moved to https://jira.percona.com/projects/PS
Invalid
Medium
Unassigned
5.1
Invalid
Undecided
Unassigned
5.5
Invalid
Medium
Unassigned
5.6
Invalid
Medium
Unassigned

Bug Description

Apparently there's an epoll() bug in Linux kernel versions < 3.x which can lead to lost events. Workaround in the threadpool code (not yet merged) in MariaDB: http://lists.askmonty.org/pipermail/commits/2013-March/004461.html

Revision history for this message
Laurynas Biveinis (laurynas-biveinis) wrote :

It seems that this bug affects kernel versions not < 3.x (in which case we wouldn't care and this would be a "Low" priority bug), but < 3.2.x for a recent x.

Revision history for this message
Alexey Kopytov (akopytov) wrote :

Even if it only applied to kernel version < 3.x, 2.x is still a default kernel on a number of supported distributions.

Roel Van de Paar (roel11)
tags: added: tp
Roel Van de Paar (roel11)
tags: added: 56qual
Laurynas Biveinis (laurynas-biveinis)
tags: removed: 56qual
Laurynas Biveinis (laurynas-biveinis)
tags: added: threadpool
removed: tp
Sveta Smirnova (svetasmirnova)
tags: added: i59977
Revision history for this message
Peter Schwaller (peter-schwaller) wrote :

This fix never actually made it into MariaDB. Closing the issue.

Revision history for this message
Shahriyar Rzayev (rzayev-sehriyar) wrote :

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-1341

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