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Re: [Qemu-devel] MTTCG status updates, benchmark results and KVM forum p


From: Peter Maydell
Subject: Re: [Qemu-devel] MTTCG status updates, benchmark results and KVM forum plans
Date: Mon, 15 Aug 2016 12:00:23 +0100

On 15 August 2016 at 11:46, Alex Bennée <address@hidden> wrote:
> I only ran up to -smp 8 as that is as
> much as the -m virt model will actually accept.

FWIW, -machine gic-version=3 should allow you more than 8 cores.

> I have noticed some instability in the test though for high -smp values
> which caused the test runners timeout protection to kick in. These look
> like guest hangs and maybe barrier related (store-after-load re-ordering
> can happen). I plan to apply the barrier patches and see if this
> improves the stability of the tests.

> From my point of view I think we are looking pretty good for merging but
> I would like to get input from the TCG maintainers who are the ones that
> will need to accept the work into their tree.

Your note above about instability and hangs is the main thing that
makes me nervous about merging...

thanks
-- PMM



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