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Bug 641458

Summary: vmstat incorrectly reports disk IO as swap in [rhel-6.0.z]
Product: Red Hat Enterprise Linux 6 Reporter: Benjamin Kahn <bkahn>
Component: kernelAssignee: Frantisek Hrbata <fhrbata>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: urgent    
Version: 6.0CC: aarcange, dhoward, jpirko, lihuang, peterm, pm-eus, qcai, sbest, syeghiay, tao, tburke, wenliu, yuchen
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
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 19:11:07 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 636978    
Bug Blocks:    

Description Benjamin Kahn 2010-10-08 18:56:42 UTC
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 18:53:18 UTC
in kernel-2.6.32-71.4.1.el6

Comment 5 chen yuwen 2010-10-29 04:24:28 UTC
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 09:00:28 UTC
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 19:11:07 UTC
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 Prpič 2010-11-11 12:01:55 UTC
    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.