Enabling KSM with ksmctl under Centos 5.4
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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|
At the moment the only guidelines I can find are from the following OLS paper, plus the Linux Kernel Docs.
On a basic dual core testbed with 4GB Ram and 4-5 VMs I've tried
ksmctl start 60 5000
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.
Has anyone got some guidelines on how to relate number of pages + interval to number of CPUs and Ram.
Steven Ellis - Director of Worldwide Engineering,
Bulletin.Net Inc - http://www.bulletin.net/
Ph +64 9 307 1146 Fax +64 9 307 1148
Mo +64 21 321 673
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