Messages in this thread | | | Subject | Re: IO scheduler based IO controller V10 | From | Mike Galbraith <> | Date | Mon, 28 Sep 2009 07:55:15 +0200 |
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P.S.
On Mon, 2009-09-28 at 06:04 +0200, Mike Galbraith wrote:
> - = virgin tip v2.6.31-10215-ga3c9602 > + = with patchlet > Avg > dd pre 67.4 70.9 65.4 68.9 66.2 67.7- > 65.9 68.5 69.8 65.2 65.8 67.0- Avg > 70.4 70.3 65.1 66.4 70.1 68.4- 67.7- > 73.1 64.6 65.3 65.3 64.9 66.6+ 65.6+ .968 > 63.8 67.9 65.2 65.1 64.4 65.2+ > 64.9 66.3 64.1 65.2 64.8 65.0+ > perf stat 8.66 16.29 9.65 14.88 9.45 11.7- > 15.36 9.71 15.47 10.44 12.93 12.7- > 10.55 15.11 10.22 15.35 10.32 12.3- 12.2- > 9.87 7.53 10.62 7.51 9.95 9.0+ 9.1+ .745 > 7.73 10.12 8.19 11.87 8.07 9.1+ > 11.04 7.62 10.14 8.13 10.23 9.4+ > dd post 63.4 60.5 66.7 64.5 67.3 64.4- > 64.4 66.8 64.3 61.5 62.0 63.8- > 63.8 64.9 66.2 65.6 66.9 65.4- 64.5- > 60.9 63.4 60.2 63.4 65.5 62.6+ 61.8+ .958 > 63.3 59.9 61.9 62.7 61.2 61.8+ > 60.1 63.7 59.5 61.5 60.6 61.0+
Deadline and noop fsc^W are less than wonderful choices for this load.
perf stat 12.82 7.19 8.49 5.76 9.32 anticipatory 16.24 175.82 154.38 228.97 147.16 noop 43.23 57.39 96.13 148.25 180.09 deadline 28.65 167.40 195.95 183.69 178.61 deadline v2.6.27.35
-Mike
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