Re: [Xen-users] out of memory with xen

["Jeff Lane" <sundowner225@xxxxxxxxx>]

On 6/27/07, Maarten Vanraes <maarten@xxxxx> wrote:
> dom0 is not doing anything, but has cached about 4.9GB of the ram, which
> results in failure to create new hosts.

I ran into this many many times with RHEL 5 and the problem looked
like a ballooning issue to me (but I am not developer-savvy enough to
fix it myself).

I ended up using the dom0_mem param at boot time, as was suggested in
this thread, and set it to 1024M.  That gives you a 1GB dom0 and
should give you 7GB or so for domUs.

That seemed to fix the problem for me.

I also ran into a problem with trying to run more than 80 domUs
simultaneously...  that seemed to be a hard limit, but looked more
like a network issue than a memory issue.

Cheers
jeff

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