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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] Block I/O outside the QEMU global mutex was "Re: [RFC PATCH 00/17] Support for multiple "AIO contexts"" |
Date: | Tue, 09 Oct 2012 11:26:11 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1 |
On 10/09/2012 11:08 AM, Stefan Hajnoczi wrote: > Here are the steps that have been mentioned: > > 1. aio fastpath - for raw-posix and other aio block drivers, can we reduce I/O > request latency by skipping block layer coroutines? Is coroutine overhead noticable? > I'm also curious about virtqueue_pop()/virtqueue_push() outside the QEMU mutex > although that might be blocked by the current work around MMIO/PIO dispatch > outside the global mutex. It is, yes. -- error compiling committee.c: too many arguments to function
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