Re: [Qemu-devel] Windows slow boot: contractor wanted

[Richard Davies]

Rik van Riel wrote:
> Richard Davies wrote:
> > I've now triggered a very slow boot at 3x 36GB 8-core VMs on a 128GB
> > host (i.e. 108GB on a 128GB host).
> >
> > It has the same profile with _raw_spin_lock_irqsave and
> > isolate_freepages_block at the top.
>
> That's the page compaction code.
>
> Mel Gorman and I have been working to fix that, the latest fixes and
> improvements are in the -mm kernel already.

Hi Rik,

That's good news.

Can you point me to specific patches which we can backport to a 3.5.2 kernel
to test whether they fix our problem?

Thanks,

Richard.