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    SubjectRE: [patch] speed up single bio_vec allocation
    > Chen, Kenneth wrote on Wednesday, December 06, 2006 10:20 AM
    > > Jens Axboe wrote on Wednesday, December 06, 2006 2:09 AM
    > > This is what I had in mind, in case it wasn't completely clear. Not
    > > tested, other than it compiles. Basically it eliminates the small
    > > bio_vec pool, and grows the bio by 16-bytes on 64-bit archs, or by
    > > 12-bytes on 32-bit archs instead and uses the room at the end for the
    > > bio_vec structure.
    > Yeah, I had a very similar patch queued internally for the large benchmark
    > measurement. I will post the result as soon as I get it.

    Jens, this improves 0.25% on our db transaction processing benchmark setup.
    The patch tested is (on top of 2.6.19):

    - Ken
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