From: Paolo Bonzini <pbonzini@redhat.com>
To: Fam Zheng <famz@redhat.com>
Cc: kwolf@redhat.com, lersek@redhat.com, qemu-devel@nongnu.org,
stefanha@redhat.com, rjones@redhat.com
Subject: Re: [Qemu-devel] [PATCH] AioContext: fix broken ctx->dispatching optimization
Date: Thu, 16 Jul 2015 11:14:37 +0200 [thread overview]
Message-ID: <55A775FD.9060700@redhat.com> (raw)
In-Reply-To: <20150716052920.GA15296@ad.nay.redhat.com>
On 16/07/2015 07:29, Fam Zheng wrote:
>> This patch rewrites the ctx->dispatching optimization
>
> I lost track, but what was the justification of this optimization?
qemu_bh_schedule's call to aio_notify were showing in the profile as 20%
or so.
Paolo
> Anyway, awesome debugging and explanations!
next prev parent reply other threads:[~2015-07-16 9:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 17:13 [Qemu-devel] [PATCH] AioContext: fix broken ctx->dispatching optimization Paolo Bonzini
2015-07-15 18:00 ` Laszlo Ersek
2015-07-15 20:14 ` Kevin Wolf
2015-07-15 22:59 ` Paolo Bonzini
2015-07-16 9:14 ` Kevin Wolf
2015-07-16 9:34 ` Paolo Bonzini
2015-07-16 5:29 ` Fam Zheng
2015-07-16 9:14 ` Paolo Bonzini [this message]
2015-07-16 9:16 ` Stefan Hajnoczi
2015-07-16 10:17 ` Stefan Hajnoczi
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