Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 18 Jul 2003 16:34:24 +1000 | From | Nick Piggin <> | Subject | Re: [PATCH] O6int for interactivity |
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Mike Galbraith wrote:
> At 03:12 PM 7/16/2003 -0700, Davide Libenzi wrote: > >> http://www.xmailserver.org/linux-patches/irman2.c >> >> and run it with different -n (number of tasks) and -b (CPU burn ms >> time). >> At the same time try to build a kernel for example. Then you will >> realize >> that interactivity is not the bigger problem that the scheduler has >> right >> now. > > > I added an irman2 load to contest. Con's changes 06+06.1 stomped it > flat [1]. irman2 is modified to run for 30s at a time, but with > default parameters. > > -Mike > > [1] imho a little too flat. it also made a worrisome impression on > apache bench > > >------------------------------------------------------------------------ > >no_load: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 153 94.8 0.0 0.0 1.00 >2.5.70 1 153 94.1 0.0 0.0 1.00 >2.6.0-test1 1 153 94.1 0.0 0.0 1.00 >2.6.0-test1-mm1 1 152 94.7 0.0 0.0 1.00 >cacherun: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 146 98.6 0.0 0.0 0.95 >2.5.70 1 146 98.6 0.0 0.0 0.95 >2.6.0-test1 1 146 98.6 0.0 0.0 0.95 >2.6.0-test1-mm1 1 146 98.6 0.0 0.0 0.96 >process_load: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 331 43.8 90.0 55.3 2.16 >2.5.70 1 199 72.4 27.0 25.5 1.30 >2.6.0-test1 1 264 54.5 61.0 44.3 1.73 >2.6.0-test1-mm1 1 323 44.9 88.0 54.2 2.12 >ctar_load: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 190 77.9 0.0 0.0 1.24 >2.5.70 1 186 80.1 0.0 0.0 1.22 >2.6.0-test1 1 213 70.4 0.0 0.0 1.39 >2.6.0-test1-mm1 1 207 72.5 0.0 0.0 1.36 >xtar_load: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 196 75.0 0.0 3.1 1.28 >2.5.70 1 195 75.9 0.0 3.1 1.27 >2.6.0-test1 1 193 76.7 1.0 4.1 1.26 >2.6.0-test1-mm1 1 195 75.9 1.0 4.1 1.28 >io_load: >Kernel [runs] Time CPU% Loads LCPU% Ratio >2.5.69 1 437 34.6 69.1 15.1 2.86 >2.5.70 1 401 37.7 72.3 17.4 2.62 >2.6.0-test1 1 243 61.3 48.1 17.3 1.59 >2.6.0-test1-mm1 1 336 44.9 64.5 17.3 2.21 >
Looks like gcc is getting less priority after a read completes. Keep an eye on this please.
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