On Tue, Nov 10, 2009 at 8:12 PM, John R Pierce pierce@hogranch.com wrote:

Lucian @ lastdot.org wrote:

...

Hi guys,

Any chance we could get KSM support in centos 5.4? Maybe the centosplus ones or a gift from elrepo.

if its not in upstream, it won't ever be in the base distribution.

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CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Nor in centosplus?

On Tue, Nov 10, 2009 at 8:39 PM, John R Pierce pierce@hogranch.com wrote:

Lucian @ lastdot.org wrote:

...

Nor in centosplus?

are you taking about Kernel Samepage Merging ?   thats a kernel 2.6.32 feature thats still considered somewhat experimental?

I'm guessing noone is going to backport it into 2.6.18, probably far too many complications there.

anyways, I'm not even sure KSM is a good idea, see http://lwn.net/Articles/330589/

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CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Hmm.. It seems KSM is already included, dumb me!

modinfo ksm filename: /lib/modules/2.6.18-172.el5/weak-updates/kmod-kvm/ksm.ko license: GPL author: Red Hat, Inc. srcversion: 7D7321714BF34DA7B861252 depends: kvm vermagic: 2.6.18-164.2.1.el5 SMP mod_unload gcc-4.1 parm: rmap_hash_size:Hash table size for the reverse mapping (int)

rpm -q kvm kvm-83-105.el5_4.9