From: Paolo Bonzini <pbonzini@redhat.com>
To: wang sheng <wansheg@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: How can I understand CONFIG_IO_THREAD ?
Date: Mon, 21 Feb 2011 09:16:55 +0100 [thread overview]
Message-ID: <4D621F77.3080802@redhat.com> (raw)
In-Reply-To: <AANLkTi=N4JweMvDP=v4z4Ndu=-L2MzuJ14rWNxOEZi3R@mail.gmail.com>
On 02/21/2011 04:13 AM, wang sheng wrote:
> What is the purpose of io_thread desigment in qemu ?
There was a lengthy thread recently explaining how it helps fixing a
possibly delay in handling I/O. It is also useful for KVM, where you
have one I/O thread and multiple CPU threads. This way, KVM can
implement "real" SMP (i.e. multiple virtual CPUs running concurrently).
Paolo
next prev parent reply other threads:[~2011-02-21 8:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-21 3:13 [Qemu-devel] How can I understand CONFIG_IO_THREAD ? wang sheng
2011-02-21 8:16 ` Paolo Bonzini [this message]
2011-02-21 9:29 ` [Qemu-devel] " Avi Kivity
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