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    SubjectRe: 2.5.31 kmap_atomic copy_*_user benefits
    Date
    On Friday 16 August 2002 01:35, William Lee Irwin III wrote:
    > On Thu, Aug 15, 2002 at 04:21:26PM -0700, William Lee Irwin III wrote:
    > > With and without kmap_atomic() -based copy_*_user() patches from akpm.
    > > Taken on a 16x/16GB box.
    > > Take 1: total throughput:
    > > before:
    > > Throughput 32.3019 MB/sec (NB=40.3774 MB/sec 323.019 MBit/sec) 512 procs
    > > after:
    > > Throughput 46.9837 MB/sec (NB=58.7296 MB/sec 469.837 MBit/sec) 512 procs
    > > In the follow-ups I'll include oprofile numbers for each and vmstat logs.
    >
    > doh! the workload was dbench 512

    Of course you know about the butterfly effect with respect to dbench...

    --
    Daniel
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