From: Gilles PIETRI <contact+dev@gilouweb.com>
To: Nikola Ciprich <extmaillist@linuxbox.cz>
Cc: kvm@vger.kernel.org
Subject: Re: KSM not working on 2.6.28.7 and qemu-kvm 0.12.2 ?
Date: Tue, 23 Feb 2010 19:21:55 +0100 [thread overview]
Message-ID: <4B841CC3.7070707@gilouweb.com> (raw)
In-Reply-To: <4B82F0E4.5030609@gilouweb.com>
Le 22/02/2010 22:02, Gilles PIETRI a écrit :
> Le 22/02/2010 06:40, Nikola Ciprich a écrit :
>> Hi Gilles, maybe You have the same problem I experienced?
>> see http://www.mail-archive.com/kvm@vger.kernel.org/msg28572.html
>> nik
>>
>
> Hi,
>
> The linux headers do include the MADV_MERGEABLE settings, and the libc
> is the debian one which happened to work fine earlier in this regard.
> Anyway I still added the flags just to make sure, and nothing more happens.
>
> Cheers,
>
> Gilou
OK, I had a doubt, so I did it again, and made sure there wasn't a
chance for the MADV_* to be missing... And it was the issue actually..
Not sure what happened there, given the linux headers are here.. It
works fine finally, thanks Nikola for your pointer.
Regards,
Gilou
>
>> On Sun, Feb 21, 2010 at 10:35:06PM +0100, Gilles PIETRI wrote:
>>> Hi,
>>>
>>> I'm running a 2.6.32.7 kernel with KSM enabled (CONFIG_KSM=y), with
>>> qemu-kvm 0.12.2 that has support for KSM (exec.c checks for
>>> MADV_MERGEABLE)..
>>>
>>> So I have KSM running, /sys/kernel/mm/ksm/run is at 1, and after a
>>> few hours running a dozen of VMs, many of them running the same
>>> OS/base image, I see no page being shared, KSM seems inactive.
>>>
>>> Values are pretty much to their default value, and it seems KSM is
>>> simply not working.. I see ksmd in the process list though, but here
>>> are the sysfs values reported:
>>> ==> /sys/kernel/mm/ksm/full_scans <==
>>> 0
>>>
>>> ==> /sys/kernel/mm/ksm/max_kernel_pages <==
>>> 1027257
>>>
>>> ==> /sys/kernel/mm/ksm/pages_shared <==
>>> 0
>>>
>>> ==> /sys/kernel/mm/ksm/pages_sharing <==
>>> 0
>>>
>>> ==> /sys/kernel/mm/ksm/pages_to_scan <==
>>> 100
>>>
>>> ==> /sys/kernel/mm/ksm/pages_unshared <==
>>> 0
>>>
>>> ==> /sys/kernel/mm/ksm/pages_volatile <==
>>> 0
>>>
>>> ==> /sys/kernel/mm/ksm/run <==
>>> 1
>>>
>>> ==> /sys/kernel/mm/ksm/sleep_millisecs <==
>>> 20
>>>
>>> Any clues?
>>>
>>> Cheers,
>>> Gilou
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe kvm" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>
>>
>
>
prev parent reply other threads:[~2010-02-23 18:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4B81A70A.1010407@gilouweb.com>
2010-02-22 5:40 ` KSM not working on 2.6.28.7 and qemu-kvm 0.12.2 ? Nikola Ciprich
2010-02-22 21:02 ` Gilles PIETRI
2010-02-23 18:21 ` Gilles PIETRI [this message]
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