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This bug has been copied from bug #636978 and has been proposed to be backported to 6.0 z-stream (EUS).
in kernel-2.6.32-71.4.1.el6
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
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 ...
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
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.