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]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.0
Hardware: All
OS: Linux
urgent
medium
Target Milestone: rc
: ---
Assignee: Frantisek Hrbata
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On: 636978
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-10-08 18:56 UTC by Benjamin Kahn
Modified: 2013-01-09 23:13 UTC (History)
13 users (show)

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.
Clone Of:
Environment:
Last Closed: 2010-11-10 19:11:07 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0842 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-11-22 19:34:20 UTC

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.
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