Messages in this thread | | | Subject | Re: [PATCH 1/3] perf: use hrtimer for event multiplexing | From | Peter Zijlstra <> | Date | Fri, 07 Sep 2012 21:08:51 +0200 |
| |
On Fri, 2012-09-07 at 19:03 +0200, Stephane Eranian wrote: > I think having different intervals would be a good thing, especially for uncore. > But now, I am wondering how this could work without too much overhead. > Looks like you're suggesting arming multiple hrtimers if multiple PMU are > overcommitted. Is that right?
Right, we shoulnd't have too many PMUs anyway, let alone over committed ones, so a timer per cpu per pmu should be fine.
> As opposed to having a PMU multiplier off of a > single per-cpu hrtimer.
| |