Re: [PATCH 0/4] Swapping

[Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>]

Very nice!

I've tested this series (with your new 3/4) with win2k, winxp, ubuntu 
7.10, and opensuse.  Everything seemed to work just fine.

I also was able to create four 1G VMs on my 2G laptop :-)  That was very 
neat.

Regards,

Anthony Liguori

Izik Eidus wrote:
> this patchs allow the guest not shadowed memory to be swapped out.
>
> to make it the must effective you should run -kvm-shadow-memory 1 (witch 
> will make your machine slow)
> with -kvm-shadow-memory 1,  3giga memory guest can get to be just 32mb 
> on physical host!
>
> when not using -kvm-shadow-memory, i saw 4100mb machine getting to as 
> low as 168mb on the physical host (not as bad as i thought it would be, 
> and surely not as bad as it can be with 41mb of shadow pages :))
>
>
> it seems to be very stable, it didnt crushed to me once, and i was able 
> to run:
> 2 3giga each windows xp  + 5giga linux guest
>
> and
> 2 4.1 giga each windows xp and 2 2giga each windows xp.
>
> few things to note:
> ignore for now the ugly messages at dmesg, it is due to the fact that 
> gfn_to_page try to sleep while local intrreupts disabled ( we have to 
> split some emulator function so it wont do it)
>
> and i saw some issue with the new rmapp at fedora 7 live cd, for some 
> reason , in the nonpaging mode rmap_remove getting called about 50 times 
> less than it need
> it doesnt happen at other linux guests, need to check this... (for now 
> it mean you might have about 200k of memory leak for each fedora 7 live 
> cd you are runing )
>
> also note that now kvm load much faster, beacuse no memset on all the 
> memory is needed (beacuse gfn_to_page get called at run time)
>
> (avi, and dor, note that this patch include small fix to a bug in the 
> patch that i sent you)
>
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