Messages in this thread | | | Date | Sat, 22 Dec 2007 01:40:37 +0200 | From | "Pekka Enberg" <> | Subject | Re: Major regression on hackbench with SLUB (more numbers) |
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Hi,
On Dec 22, 2007 1:17 AM, Ingo Molnar <mingo@elte.hu> wrote: > yep, and i ran a quick comparison test on a 2-core box with 3 kernels: > > [ best of 5 runs in a row which had a relative jitter of less than 10% ] > > MIN v2.6.24.slab v2.6.24.slub v2.6.24.slub.fix > ---------------------------------------------------------- > mmap: 429.00 402.00 ( -6%) 385.00 (-10%) > select: 11.38 10.46 ( -8%) 11.41 ( 0%) > proc-exec: 121.52 116.77 ( -3%) 120.77 ( 0%) > proc-fork: 106.84 106.19 ( 0%) 107.92 ( 1%) > syscall-open: 3.09 3.13 ( 1%) 3.25 ( 4%) > hackbench-50: 2.85 3.47 ( 21%) 2.88 ( 1%) > > and the regression seems to be largely fixed! Not only is the hackbench > one fixed, but mmap shows an above-noise improvement as well. > > Acked-by: Ingo Molnar <mingo@elte.hu>
I thought it might be a bug but couldn't figure it out. The patch looks good to me too, Christoph.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
On Dec 22, 2007 1:17 AM, Ingo Molnar <mingo@elte.hu> wrote: > And i hereby nominate Pekka as SLUB/SLAB co-maintainer and spokesperson > ;-)
Heh, thanks, but grep me from MAINTAINERS some day, Ingo :-).
Pekka
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