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Are their any good guides out there on how to use ksmctl to enable and
tune KSM performance on Centos/RedHat<br>
<br>
At the moment the only guidelines I can find are from the following OLS
paper, plus the Linux Kernel Docs.<br>
* <a class="moz-txt-link-freetext" href="http://www.kernel.org/doc/ols/2009/ols2009-pages-19-28.pdf">http://www.kernel.org/doc/ols/2009/ols2009-pages-19-28.pdf</a><br>
* <a class="moz-txt-link-freetext" href="http://www.kernel.org/doc/Documentation/vm/ksm.txt">http://www.kernel.org/doc/Documentation/vm/ksm.txt</a><br>
<br>
On a basic dual core testbed with 4GB Ram and 4-5 VMs I've tried<br>
<br>
ksmctl start 60 5000<br>
<br>
This resulted in a 5% system cpu load as it tried to recover shared
space. Sadly I can't tell how well it is working as we don't have
/sys/kernel/mm/ksm support in Centos.<br>
<br>
Has anyone got some guidelines on how to relate number of pages +
interval to number of CPUs and Ram.<br>
<br>
Cheers<br>
<br>
Steve<br>
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