Messages in this thread | | | Date | Thu, 11 Nov 2010 20:38:10 +0100 | From | Markus Trippelsdorf <> | Subject | Re: [RFC/RFT PATCH v3] sched: automated per tty task groups |
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On 2010.11.11 at 12:35 -0700, Mike Galbraith wrote: > On Thu, 2010-11-11 at 20:15 +0100, Markus Trippelsdorf wrote: > > > Just to add some data; here are the results from my machine (AMD 4 > > cores) running a -j4 kernel build, while I browsed the web: > > > > 1) perf sched record sleep 30 > > > > without: > > total_wakeups: 44306 > > avg_wakeup_latency (ns): 36784 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 9378852 > > > > with: > > total_wakeups: 43836 > > avg_wakeup_latency (ns): 67607 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 8983036 > > > > 2) perf record -a -e sched:sched_switch -e sched:sched_wakeup sleep 10 > > > > without: > > total_wakeups: 13195 > > avg_wakeup_latency (ns): 48484 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 8722497 > > > > with: > > total_wakeups: 14106 > > avg_wakeup_latency (ns): 92532 > > min_wakeup_latency (ns): 20 > > max_wakeup_latency (ns): 5642393 > > > > So the avg_wakeup_latency nearly doubled with your patch, while the > > max_wakeup_latency is lowered by a good amount. > > When you say with/without, does that mean enabled/disabled, or > patched/virgin and/or cgroups/nocgroups?
Patched/virgin and nocgroups -- Markus
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