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Date: Tue, 2 Aug 2016 14:53:03 -0400
From: "Emilio G. Cota" <cota@braap.org>
Message-ID: <20160802185303.GA18402@flamenco>
References: <1470158864-17651-1-git-send-email-alex.bennee@linaro.org>
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Subject: Re: [Qemu-devel] [PATCH v5 13/13] cpu-exec: replace
 cpu->queued_work with GArray
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To: Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>
Cc: mttcg@listserver.greensocs.com, qemu-devel@nongnu.org, fred.konrad@greensocs.com, a.rigo@virtualopensystems.com, serge.fdrv@gmail.com, bobby.prani@gmail.com, mark.burton@greensocs.com, pbonzini@redhat.com, jan.kiszka@siemens.com, rth@twiddle.net, peter.maydell@linaro.org, claudio.fontana@huawei.com, Peter Crosthwaite <crosthwaite.peter@gmail.com>

On Tue, Aug 02, 2016 at 18:27:44 +0100, Alex Bennée wrote:
> Under times of high memory stress the additional small mallocs by a
> linked list are source of potential memory fragmentation. As we have
> worked hard to avoid mallocs elsewhere when queuing work we might as
> well do the same for the list. We convert the lists to a auto-resizeing
> GArray which will re-size in steps of powers of 2.

Would be nice to see numbers on how this compares to simply using
tcmalloc/jemalloc (or the glibc allocator, really).

Thanks,

		Emilio