Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: 2.5.31 kmap_atomic copy_*_user benefits | Date | Sun, 18 Aug 2002 10:36:48 +0200 |
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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...
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