Percona Server with XtraDB

Remove malloc() from read_view_create_low()

Bug #1131187 reported by Alexey Kopytov on 2013-02-21

This bug affects 1 person

Affects

Status

Importance

Assigned to

Milestone

MySQL Server

Unknown

mysql-bugs #49169

You need to log in to change this bug's status.

Launchpad doesn't support importing bugs from PHP Project Bugtracker bug trackers.
(what does this mean?)

Affecting:	MySQL Server
Filed here by:	Alexey Kopytov
When:	2013-02-21

Target

Distribution
Package	(Find…)
Project	(Find…)

Status	Importance
Unknown	Unknown

Assigned to
unknown

Remote Watch

	None, the status of the bug is updated manually.
	None, the status of the bug is updated manually.
	MySQL Bug System #49169
	URL:

The information about this bug in Launchpad is automatically pulled daily from the remote bug. This information was last pulled 23 hours ago.

Comment on this change (optional)

E-mail me about changes to this bug report

Percona Server

Status tracked in 5.6

5.1

Won't Fix

Undecided

Unassigned

You need to log in to change this bug's status.

Affecting:	Percona Server 5.1
Filed here by:	Alexey Kopytov
When:	2013-02-21
Completed:	2013-02-21

Status	Importance
	Undecided

Assigned to

	Nobody
	Me

Comment on this change (optional)

E-mail me about changes to this bug report

5.5

Fix Released

High

Alexey Kopytov

Percona Server 5.5.30-30.2

You need to log in to change this bug's status.

Affecting:	Percona Server 5.5
Filed here by:	Alexey Kopytov
When:	2013-02-21
Confirmed:	2013-02-21
Assigned:	2013-02-21
Started work:	2013-02-21
Completed:	2013-03-25

Status	Importance	Milestone
	High	Percona Server 5.5.30-30.2

Assigned to

	Me
	Alexey Kopytov (akopytov)

Comment on this change (optional)

E-mail me about changes to this bug report

5.6

Fix Released

High

Alexey Kopytov

Percona Server 5.6.11-60.3

You need to log in to change this bug's status.

Affecting:	Percona Server 5.6
Filed here by:	Alexey Kopytov
When:	2013-02-21
Confirmed:	2013-02-21
Assigned:	2013-02-21
Started work:	2013-05-22
Completed:	2013-05-24

Status	Importance	Milestone
	High	Percona Server 5.6.11-60.3

Assigned to

	Me
	Alexey Kopytov (akopytov)

Comment on this change (optional)

E-mail me about changes to this bug report

(?)

Bug Description

read_view_create_low() is called on every transaction start and allocates memory for the read view created in read_view_open_now().

The problem is that the heap for that allocation is emptied on each commit and thus read view memory is reallocated on the next transaction. Memory profiling shows that memory allocated by read_view_create_low() amount to almost 100% of all allocations made by InnoDB in sysbench read-only tests.

Add tags Tag help