Date: Thu, 15 May 2008 18:43:06 -0500 (CDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: freebsd-emulation@FreeBSD.org Subject: QEMU AIO patch Message-ID: <alpine.BSF.1.10.0805151833220.23101@thor.farley.org>
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Awhile ago, I wrote a patch to take advantage of FreeBSD's aio_waitcomplete() call in the QEMU raw block code. It took some doing, but I finally found a copy of the patch[1] on a laptop that started dying about a year ago. Using aio_waitcomplete() should reduce the number of context switches present in the current code. I have not truly tested the patch to see how well it helps. Since it is FreeBSD-only, I am posting it here instead of directly to the QEMU mailing list. Sean 1. http://www.farley.org/freebsd/tmp/qemu-aio.patch -- scf@FreeBSD.org
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