Bug#558200: marked as done (linux-image-2.6.32-rc8-amd64: Please, enable CONFIG_KSM in 2.6.32)
Your message dated Fri, 27 Nov 2009 15:58:04 +0100
with message-id <20091127145804.GA25768@baikonur.stro.at>
and subject line Re: Bug#558200: linux-image-2.6.32-rc8-amd64: Please, enable CONFIG_KSM in 2.6.32
has caused the Debian Bug report #558200,
regarding linux-image-2.6.32-rc8-amd64: Please, enable CONFIG_KSM in 2.6.32
to be marked as done.
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558200: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=558200
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--- Begin Message ---
Package: linux-image-2.6.32-rc8-amd64
Version: 2.6.32~rc8-1~experimental.1
Severity: wishlist
Hi,
Kernel SamePage Merging is a recent linux kernel feature which combines
identical memory pages from multiple processes into one copy on write memory
region.
It is especially interesting on a host where you run several kvm guest
with the same operating system.
KSM does not change anything but if a process (such as recent version of kvm)
requests it with a call to madvise.
So, please, enable this feature in 2.6.32 Debian kernel.
Best regards,
Vincent
-- System Information:
Debian Release: squeeze/sid
APT prefers oldstable
APT policy: (500, 'oldstable'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.31-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
--- End Message ---
--- Begin Message ---
On Fri, Nov 27, 2009 at 12:14:28AM +0100, Vincent Danjean wrote:
> Package: linux-image-2.6.32-rc8-amd64
> Version: 2.6.32~rc8-1~experimental.1
> Severity: wishlist
>
> Hi,
>
> Kernel SamePage Merging is a recent linux kernel feature which combines
> identical memory pages from multiple processes into one copy on write memory
> region.
> It is especially interesting on a host where you run several kvm guest
> with the same operating system.
> KSM does not change anything but if a process (such as recent version of kvm)
> requests it with a call to madvise.
> So, please, enable this feature in 2.6.32 Debian kernel.
>
> Best regards,
> Vincent
please read debian devel announce mail of the metting minutes how they
gonna be enabled, for now please just enable them on boot.
next time do a bit of research why they are not yet enabled by *default*
kthxbye
--- End Message ---
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