From: ching <lsching17@gmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] linux aio and cache mode
Date: Mon, 24 Sep 2012 19:32:46 +0800 [thread overview]
Message-ID: <506044DE.9060701@gmail.com> (raw)
Hi all,
My host is qemu-1.1.1 and x64 kernel 3.5.4. The guest is using aio="native"
I am trying to use unsafe cache mode to boost i/o performance.
After googling a while, there are some old web page telling that linux native aio do not use host cache. (http://stackoverflow.com/questions/5664105/buffered-asynchronous-file-i-o-on-linux)
is it still valid for recent kernel? do i need to change to aio="threads" to take advantage of unsafe cache mode?
Thanks in advance.
Regards,
ching
next reply other threads:[~2012-09-24 11:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-24 11:32 ching [this message]
2012-09-24 12:30 ` [Qemu-devel] linux aio and cache mode Kevin Wolf
2012-09-24 22:40 ` ching
2012-09-25 13:33 ` Kevin Wolf
2012-09-25 23:22 ` ching
2012-09-26 7:51 ` Kevin Wolf
2012-09-28 0:00 ` ching
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