Bug 641458 – vmstat incorrectly reports disk IO as swap in [rhel-6.0.z]

Bug 641458 - vmstat incorrectly reports disk IO as swap in [rhel-6.0.z]

Summary:	vmstat incorrectly reports disk IO as swap in [rhel-6.0.z]

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	6.0
Hardware:	All Linux

Priority	urgent Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Frantisek Hrbata
QA Contact:	Red Hat Kernel QE team
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	636978
Blocks:
	Show dependency tree / graph

Reported:	2010-10-08 14:56 EDT by Benjamin Kahn
Modified:	2013-01-09 18:13 EST (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	kernel-2.6.32-71.4.1.el6
Doc Type:	Bug Fix
Doc Text:	Previously, the vmstat (virtual memory statistics) tool incorrectly reported the disk I/O as swap-in on ppc64 and other architectures that do not support the TRANSPARENT_HUGEPAGE configuration option in the kernel. With this update, the vmstat tool no longer reports incorrect statistics and works as expected.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2010-11-10 14:11:07 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Benjamin Kahn 2010-10-08 14:56:42 EDT

This bug has been copied from bug #636978 and has been proposed
to be backported to 6.0 z-stream (EUS).

Comment 2 Frantisek Hrbata 2010-10-12 14:53:18 EDT

in kernel-2.6.32-71.4.1.el6

Comment 5 chen yuwen 2010-10-29 00:24:28 EDT

Verified in kernel-2.6.32-71.6.1.el6.ppc64.
No issue on  x86_64 system with kernel 2.6.32-23.el6.x86_64

Comment 6 chen yuwen 2010-10-29 05:00:28 EDT

Verified in kernel-2.6.32-71.8.1.el6.s390x.
...
numa_other 11353
nr_anon_transparent_hugepages 0
pgpgin 117800
pgpgout 13704
pswpin 0
pswpout 0
...

Verified in kernel-2.6.32-71.8.1.el6.i686.
...
nr_anon_transparent_hugepages 0
pgpgin 77639
pgpgout 603659
pswpin 0
pswpout 0

...

Comment 8 errata-xmlrpc 2010-11-10 14:11:07 EST

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2010-0842.html

Comment 9 Martin Prpic 2010-11-11 07:01:55 EST

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Previously, the vmstat (virtual memory statistics) tool incorrectly reported the disk I/O as swap-in on ppc64 and other architectures that do not support the TRANSPARENT_HUGEPAGE configuration option in the kernel. With this update, the vmstat tool no longer reports incorrect statistics and works as expected.

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