[Xen-users] Re: Large server, Xen limitations

[Aleksandar Ivanisevic <aleksandar@xxxxxxxxxxxxx>]

Luke S Crawford <lsc@xxxxxxxxx> writes:

> Aleksandar Ivanisevic <aleksandar@xxxxxxxxxxxxx> writes:
>> I have a 8Gb server running a dozen or so VMs with combined memory
>> usage (as reported by xm list) never over 6Gb and been getting strange
>> intermittent out of memory errors.
>
> make sure dom0-min-mem in /etc/xen/xend-config.sxp is set to something
> sane,  I use 512 on my 8G servers and 1024 on my 32G servers.   Anything
> less, depending on your linux distro and how much you are doing in the Dom0,
> can give you out of memory errors.   

I already have dom0_mem=768M in kernel params to limit the dom0 memory
usage, why would I want to set the minimum to 1G?

I am not doing anything in dom0, this is a dedicated xen server, with
10 PV machines dom0 mem usage never crosses 0.5G.

Is there a leak or something?

-- 
To sto si frustriran, zavidan tko zna na cemu i sto ne vidis dalje od
svoje guzice je tuzno. Da onda barem imas toliko samokontrole da
sutis umjesto da pravis budalu od sebe... izgleda da si prestar da se
promjenis na bolje. - Davor Pasaric, hr.comp.mac


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