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From: Badari Pulavarty <pbadari@us.ibm.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: kvm@vger.kernel.org
Subject: Re: [RFC] vhost-blk implementation
Date: Mon, 22 Mar 2010 19:50:03 -0700	[thread overview]
Message-ID: <4BA82C5B.8010808@us.ibm.com> (raw)
In-Reply-To: <4BA820AE.7090803@codemonkey.ws>

Anthony Liguori wrote:
> On 03/22/2010 08:45 PM, Badari Pulavarty wrote:
>> Anthony Liguori wrote:
>>> On 03/22/2010 08:00 PM, Badari Pulavarty wrote:
>>>> Forgot to CC: KVM list earlier
>>>
>>>
>>> These virtio results are still with a 2.6.18 kernel with no aio, right?
>> Results are on 2.6.33-rc8-net-next kernel. But not using AIO.
>
> Can you try with aio and cache=none?

aio-native,cache=none

# time dd if=/dev/vda of=/dev/null bs=128k iflag=direct
640000+0 records in
640000+0 records out
83886080000 bytes (84 GB) copied, 470.588 seconds, 170 MB/s

Thanks,
Badari





  reply	other threads:[~2010-03-23  2:49 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-23  1:00 [RFC] vhost-blk implementation Badari Pulavarty
2010-03-23  1:16 ` Anthony Liguori
2010-03-23  1:45   ` Badari Pulavarty
2010-03-23  2:00     ` Anthony Liguori
2010-03-23  2:50       ` Badari Pulavarty [this message]
2010-03-23 10:05         ` Avi Kivity
2010-03-23 14:48           ` Badari Pulavarty
2010-03-23 10:03 ` Avi Kivity
2010-03-23 14:55   ` Badari Pulavarty
2010-03-23 16:53     ` Avi Kivity
2010-03-24 20:05   ` Christoph Hellwig
2010-03-25  6:29     ` Avi Kivity
2010-03-25 15:48       ` Christoph Hellwig
2010-03-25 15:51         ` Avi Kivity
2010-03-25 15:00     ` Asdo
2010-04-05 19:59       ` Christoph Hellwig
2010-04-07  0:36         ` [RFC] vhost-blk implementation (v2) Badari Pulavarty
2010-03-23 10:09 ` [RFC] vhost-blk implementation Eran Rom
2010-03-24 20:04 ` Christoph Hellwig
2010-03-24 20:22   ` Badari Pulavarty
2010-03-25  7:57     ` Avi Kivity
2010-03-25 14:36       ` Badari Pulavarty
2010-03-25 15:57     ` Christoph Hellwig
2010-03-26 18:53       ` Eran Rom
2010-04-08 16:17         ` Stefan Hajnoczi
2010-04-05 19:23     ` Christoph Hellwig
2010-04-05 23:17       ` Badari Pulavarty
2010-03-24 20:27   ` Badari Pulavarty
2010-03-29 15:41   ` Badari Pulavarty
2010-03-29 18:20     ` Chris Wright
2010-03-29 20:37       ` Avi Kivity
2010-03-29 22:51         ` Badari Pulavarty
2010-03-29 23:56           ` Chris Wright
2010-03-30 12:43           ` Avi Kivity
2010-04-05 14:22     ` Stefan Hajnoczi
2010-04-06  2:27       ` Badari Pulavarty

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