* KSM memory saving amount
@ 2011-09-09 6:38 Mihamina Rakotomandimby
2011-09-09 16:52 ` Thomas Treutner
2011-09-09 17:06 ` Marcelo Tosatti
0 siblings, 2 replies; 4+ messages in thread
From: Mihamina Rakotomandimby @ 2011-09-09 6:38 UTC (permalink / raw)
To: kvm
Hi all,
Running an Ubuntu Natty where I launched 3 Xubuntu and 1 win 7, I cat see:
/sys/kernel/mm/ksm/full_scans: 34
/sys/kernel/mm/ksm/pages_shared: 8020
/sys/kernel/mm/ksm/pages_sharing: 36098
/sys/kernel/mm/ksm/pages_to_scan: 100
/sys/kernel/mm/ksm/pages_unshared: 247109
/sys/kernel/mm/ksm/pages_volatile: 32716
/sys/kernel/mm/ksm/run: 1
/sys/kernel/mm/ksm/sleep_millisecs: 200
I would like to evaluate the memory amount:
How many byte is a page?
--
RMA.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KSM memory saving amount
2011-09-09 6:38 KSM memory saving amount Mihamina Rakotomandimby
@ 2011-09-09 16:52 ` Thomas Treutner
2011-09-09 18:19 ` Dan VerWeire
2011-09-09 17:06 ` Marcelo Tosatti
1 sibling, 1 reply; 4+ messages in thread
From: Thomas Treutner @ 2011-09-09 16:52 UTC (permalink / raw)
To: Mihamina Rakotomandimby; +Cc: kvm
Am 09.09.2011 08:38, schrieb Mihamina Rakotomandimby:
> How many byte is a page?
Typically, unless you use hugepages, a page is 4 KiB = 4096 Byte.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KSM memory saving amount
2011-09-09 16:52 ` Thomas Treutner
@ 2011-09-09 18:19 ` Dan VerWeire
0 siblings, 0 replies; 4+ messages in thread
From: Dan VerWeire @ 2011-09-09 18:19 UTC (permalink / raw)
Cc: Mihamina Rakotomandimby, kvm
On Fri, Sep 9, 2011 at 12:52 PM, Thomas Treutner <thomas@scripty.at> wrote:
> Am 09.09.2011 08:38, schrieb Mihamina Rakotomandimby:
>>
>> How many byte is a page?
>
> Typically, unless you use hugepages, a page is 4 KiB = 4096 Byte.
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
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>
I wrote a bash script which calculates the KSM savings. I have posted it here:
https://gist.github.com/1206923
I can not guarantee its accuracy. It was the best I could do with the
knowledge I had. The results seem reasonable to me though.
Hope this is useful to someone.
Dan VerWeire
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KSM memory saving amount
2011-09-09 6:38 KSM memory saving amount Mihamina Rakotomandimby
2011-09-09 16:52 ` Thomas Treutner
@ 2011-09-09 17:06 ` Marcelo Tosatti
1 sibling, 0 replies; 4+ messages in thread
From: Marcelo Tosatti @ 2011-09-09 17:06 UTC (permalink / raw)
To: Mihamina Rakotomandimby; +Cc: kvm
On Fri, Sep 09, 2011 at 09:38:23AM +0300, Mihamina Rakotomandimby wrote:
> Hi all,
>
> Running an Ubuntu Natty where I launched 3 Xubuntu and 1 win 7, I cat see:
> /sys/kernel/mm/ksm/full_scans: 34
> /sys/kernel/mm/ksm/pages_shared: 8020
> /sys/kernel/mm/ksm/pages_sharing: 36098
> /sys/kernel/mm/ksm/pages_to_scan: 100
> /sys/kernel/mm/ksm/pages_unshared: 247109
> /sys/kernel/mm/ksm/pages_volatile: 32716
> /sys/kernel/mm/ksm/run: 1
> /sys/kernel/mm/ksm/sleep_millisecs: 200
>
> I would like to evaluate the memory amount:
> How many byte is a page?
4096.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-09-09 18:34 UTC | newest]
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2011-09-09 6:38 KSM memory saving amount Mihamina Rakotomandimby
2011-09-09 16:52 ` Thomas Treutner
2011-09-09 18:19 ` Dan VerWeire
2011-09-09 17:06 ` Marcelo Tosatti
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