lkml.org 
[lkml]   [2013]   [Jan]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 00/32] AIO performance improvements/cleanups, v3
    On 2012-12-27 02:59, Kent Overstreet wrote:
    > Last posting: http://article.gmane.org/gmane.linux.kernel.aio.general/3242
    >
    > As before, changes should mostly be noted in the patch descriptions.
    >
    > Some random bits:
    > * flush_dcache_page() patch is new
    > * Rewrote the aio_read_evt() stuff again
    > * Fixed a few comments
    > * Included some more patches, notably the batch completion stuff
    >
    > My git repo has Jens' aio/dio patches on top of this stuff. As of the
    > latest version, I'm seeing a couple percent better throughput with the
    > ring buffer, and I think Jens was seeing a couple percent better with
    > his linked list approach - at this point I think the difference is
    > noise, we're both testing with fairly crappy drivers.

    I still see 10-15% better performance with my non-ring method, so it's a
    bit faster than that. That's on the single device, driving that to the
    maximum.


    --
    Jens Axboe



    \
     
     \ /
      Last update: 2013-01-04 11:01    [W:4.124 / U:0.068 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site