[lkml]   [2004]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/2] aio: add vectored I/O support
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().



"Nothing is wrong with California that a rise in the ocean level
wouldn't cure."
- Ross MacDonald
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:07    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean