From: Avi Kivity <avi@redhat.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>, kvm@vger.kernel.org
Subject: Re: [RFC] vhost-blk implementation
Date: Thu, 25 Mar 2010 17:51:31 +0200 [thread overview]
Message-ID: <4BAB8683.6040504@redhat.com> (raw)
In-Reply-To: <20100325154805.GA1504@infradead.org>
On 03/25/2010 05:48 PM, Christoph Hellwig wrote:
> On Thu, Mar 25, 2010 at 08:29:03AM +0200, Avi Kivity wrote:
>
>> We still have a virtio implementation in userspace for file-based images.
>>
>> In any case, the file APIs are not asynchronous so we'll need a thread
>> pool. That will probably minimize the difference in performance between
>> the userspace and kernel implementations.
>>
> The kernel has "real" aio when doing direct I/O, although currently we
> can't easily use it from kernelspace. Thejre's a few people who've been
> looking into making it usable for that, though.
>
Interesting. Are there limitations on supported filesystems, or
allocating vs. non-allocating writes?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-03-25 15:51 UTC|newest]
Thread overview: 47+ 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
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 [this message]
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
2010-04-07 0:36 ` 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
-- strict thread matches above, loose matches on Subject: below --
2010-03-23 0:34 Badari Pulavarty
2010-03-23 12:39 ` Michael S. Tsirkin
2010-03-23 14:47 ` Badari Pulavarty
2010-03-23 17:57 ` Badari Pulavarty
2010-03-23 18:06 ` Michael S. Tsirkin
2010-03-23 19:55 ` Badari Pulavarty
2010-03-24 9:52 ` Michael S. Tsirkin
2010-03-24 11:23 ` Michael S. Tsirkin
2010-03-24 17:58 ` Badari Pulavarty
2010-03-24 18:28 ` Michael S. Tsirkin
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