From: Paolo Bonzini <pbonzini@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] block: switch from g_slice allocator to malloc
Date: Fri, 9 Oct 2015 12:29:34 +0200 [thread overview]
Message-ID: <5617970E.5010308@redhat.com> (raw)
In-Reply-To: <20151009081504.GA3956@noname.redhat.com>
On 09/10/2015 10:15, Kevin Wolf wrote:
> > I did it about six months ago. Sorry for not digging up the results
> > when posting:
> >
> > baseline: 193 kiops
> > tcmalloc: 202 kiops
> > tcmalloc + G_SLICE=always-malloc: 210 kiops
>
> Thanks. Do you have numbers for g_malloc + G_SLICE=always-malloc, too?
> Because I think that's our new default after this patch. tcmalloc must
> still be enabled manually.
No, but I remember that it was a wash.
I don't recall exactly, but either g_slice was a bit faster at freeing
and a bit slower at allocating, or it was the other way round.
Paolo
prev parent reply other threads:[~2015-10-09 10:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 11:04 [Qemu-devel] [PATCH] block: switch from g_slice allocator to malloc Paolo Bonzini
2015-10-08 8:54 ` Stefan Hajnoczi
2015-10-08 9:41 ` [Qemu-devel] [Qemu-block] " Kevin Wolf
2015-10-09 7:49 ` [Qemu-devel] " Paolo Bonzini
2015-10-09 8:15 ` Kevin Wolf
2015-10-09 10:29 ` Paolo Bonzini [this message]
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