Re: [PATCH] perf stat: Take cgroups into account for shadow stats

2020-11-16 Thread Namhyung Kim
On Sun, Nov 15, 2020 at 10:08 PM Andi Kleen wrote: > > Actually thinking about it more you should probably pass around ctx/cgroup > in a single abstract argument. Otherwise have to change all the metrics > functions for the next filter too. Ok, will do. Thanks, Namhyung

Re: [PATCH] perf stat: Take cgroups into account for shadow stats

2020-11-16 Thread Namhyung Kim
Hi Andi, On Sun, Nov 15, 2020 at 10:05 PM Andi Kleen wrote: > > > @@ -57,6 +59,9 @@ static int saved_value_cmp(struct rb_node *rb_node, const > > void *entry) > > if (a->ctx != b->ctx) > > return a->ctx - b->ctx; > > > > + if (a->cgrp != b->cgrp) > > + return

Re: [PATCH] perf stat: Take cgroups into account for shadow stats

2020-11-15 Thread Andi Kleen
Actually thinking about it more you should probably pass around ctx/cgroup in a single abstract argument. Otherwise have to change all the metrics functions for the next filter too.

Re: [PATCH] perf stat: Take cgroups into account for shadow stats

2020-11-15 Thread Andi Kleen
> @@ -57,6 +59,9 @@ static int saved_value_cmp(struct rb_node *rb_node, const > void *entry) > if (a->ctx != b->ctx) > return a->ctx - b->ctx; > > + if (a->cgrp != b->cgrp) > + return (char *)a->cgrp < (char *)b->cgrp ? -1 : +1; This means the sort order will

[PATCH] perf stat: Take cgroups into account for shadow stats

2020-11-13 Thread Namhyung Kim
As of now it doesn't consider cgroups when collecting shadow stats and metrics so counter values from different cgroups will be saved in a same slot. This resulted in an incorrect numbers when those cgroups have different workloads. For example, let's look at the below - the cgroup A and C runs s