Messages in this thread | | | Date | Wed, 08 Mar 2006 10:58:00 -0500 | From | Phillip Susi <> | Subject | Re: Status of AIO |
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Ulrich Drepper wrote: > What has network I/O to do with O_DIRECT? I'm talking about async network I/O.
O_DIRECT allows for zero copy IO, which saves a boatload of cpu cycles. For disk IO it is possible to use O_DIRECT without aio, but there is generally a loss of efficiency doing so. For network IO, O_DIRECT is not even possible without aio.
By using aio and O_DIRECT for network IO, you can achieve massive performance and scalability gains.
You said before that the kernel aio interface is not suitable for sockets. Why not?
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