| commit | 1b023a96d9b44f50f4d8ff28c15f5b80e354760f | [log] [tgz] |
|---|---|---|
| author | Mike Galbraith <efault@gmx.de> | Fri Jan 23 10:13:01 2009 +0100 |
| committer | Ingo Molnar <mingo@elte.hu> | Fri Jan 23 11:33:18 2009 +0100 |
| tree | 8b6a5956c4461c13c2e2b3769096afac5b767524 | |
| parent | 05e3423c8577126800841bc55de8a509f2433dca [diff] |
perfcounters: throttle on too high IRQ rates Starting kerneltop with only -c 100 seems to be a bad idea, it can easily lock the system due to perfcounter IRQ overload. So add throttling: if a new IRQ arrives in a shorter than PERFMON_MIN_PERIOD_NS time, turn off perfcounters and untrottle them from the next timer tick. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>