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Re: [Qemu-devel]  Implement an fd pool to get real AIO with posix-
Re: [Qemu-devel]  Implement an fd pool to get real AIO with posix-aio
Tue, 07 Oct 2008 11:01:50 -0500
Thunderbird 220.127.116.11 (X11/20080925)
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
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.