Messages in this thread | | | Date | Sat, 16 Oct 2004 06:37:21 +0100 | From | Joel Becker <> | Subject | Re: [PATCH 1/2] aio: add vectored I/O support |
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On Sat, Oct 16, 2004 at 07:18:45AM +0200, Avi Kivity wrote: > It is a huge performance win, at least on the 2.4-based RHEL kernel. > Large reads (~256K) using 4K iocbs are very slow on a large RAID, while > after I coded a similar patch I got a substantial speedup.
I'd think we should fix the submission path instead. Why create iovs _and_ iocbs when we only need to create one? And even if we decided aio_readv() was still nice to keep, we'd want to fix this inefficiency in io_submit().
Joel
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