From: Anthony Liguori <anthony@codemonkey.ws>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [5323] Implement an fd pool to get real AIO with posix-aio
Date: Tue, 07 Oct 2008 11:01:50 -0500 [thread overview]
Message-ID: <48EB87EE.9050003@codemonkey.ws> (raw)
In-Reply-To: <48EB8393.8020005@redhat.com>
Gerd Hoffmann wrote:
> Anthony Liguori wrote:
>
>
>> The fundamental problem with posix-aio is that it limits itself to one thread
>> per-file descriptor. I don't know why this is, but this patch provides a simple
>> mechanism to work around this (duplicating the file descriptor).
>>
>> This isn't a great solution, but it seems like a reasonable intermediate step
>> between posix-aio and a custom thread-pool to replace it.
>>
>
> Are there plans to support vectored block requests with the thread pool
> implementation?
>
Yes, that's the primary reason for doing a new thread pool
implementation. Of course, we need a zero-copy DMA API before such a
thing would make sense.
Regards,
Anthony Liguori
> cheers,
> Gerd
>
>
>
next prev parent reply other threads:[~2008-10-07 16:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-26 15:59 [Qemu-devel] [5323] Implement an fd pool to get real AIO with posix-aio Anthony Liguori
2008-09-26 17:59 ` Ryan Harper
2008-09-26 18:35 ` Anthony Liguori
2008-09-26 18:50 ` Ryan Harper
2008-10-07 15:43 ` Gerd Hoffmann
2008-10-07 16:01 ` Anthony Liguori [this message]
2008-10-07 20:40 ` Gerd Hoffmann
2008-10-07 21:21 ` Anthony Liguori
2008-10-07 22:15 ` Gerd Hoffmann
2008-10-07 22:39 ` Anthony Liguori
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