RE: [Xen-devel] OOM problems

[Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>]

> On machines running many HVM (stubdom-based) domains, I often see errors
> like this:
> 
> [77176.524094] qemu-dm invoked oom-killer: gfp_mask=0xd0, order=0,
> oom_adj=0

What do the guests use for storage? (e.g. "blktap2 for VHD files on an iscsi 
mounted ext3 volume")

It might be worth looking at /proc/kernel/slabinfo to see if there's anything 
suspicious.

BTW: 24 vCPUs in dom0 seems a excessive, especially if you're using stubdoms. 
You may get better performance by dropping that to e.g. 2 or 3.

Ian


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