Hi Chris,
On Wed, Jan 06, 2021 at 03:43:36AM +, Chris Down wrote:
> Feng Tang writes:
> >One further thought is, there are quite some "BATCH" number in
> >kernel for perf-cpu/global data updating, maybe we can add a
> >global flag 'sysctl_need_accurate_stats' for
> > if (sysctl_need_accura
Chris Down writes:
solution to the problem -- inclusion should at least be contingent on
either having "correct-ish" stats exported to userspace. Displaying
s/either//
Feng Tang writes:
One further thought is, there are quite some "BATCH" number in
kernel for perf-cpu/global data updating, maybe we can add a
global flag 'sysctl_need_accurate_stats' for
if (sysctl_need_accurate_stats)
batch = SMALLER_BATCH
else
bat
Hi Shakeel,
On Tue, Jan 05, 2021 at 04:47:33PM -0800, Shakeel Butt wrote:
> On Tue, Dec 29, 2020 at 6:35 AM Feng Tang wrote:
> >
> > When profiling memory cgroup involved benchmarking, status update
> > sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> > is used for both charging
On Tue, Dec 29, 2020 at 6:35 AM Feng Tang wrote:
>
> When profiling memory cgroup involved benchmarking, status update
> sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> is used for both charging and statistics/events updating, and is
> set to 32, which may be good for accuracy o
On Mon, Jan 04, 2021 at 02:15:40PM +0100, Michal Hocko wrote:
> On Tue 29-12-20 22:35:14, Feng Tang wrote:
> > When profiling memory cgroup involved benchmarking, status update
> > sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> > is used for both charging and statistics/events u
On Tue 29-12-20 22:35:14, Feng Tang wrote:
> When profiling memory cgroup involved benchmarking, status update
> sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> is used for both charging and statistics/events updating, and is
> set to 32, which may be good for accuracy of memcg c
Hi Roman,
On Tue, Dec 29, 2020 at 09:13:27AM -0800, Roman Gushchin wrote:
> On Tue, Dec 29, 2020 at 10:35:14PM +0800, Feng Tang wrote:
> > When profiling memory cgroup involved benchmarking, status update
> > sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> > is used for both cha
On Tue, Dec 29, 2020 at 10:35:14PM +0800, Feng Tang wrote:
> When profiling memory cgroup involved benchmarking, status update
> sometimes take quite some CPU cycles. Current MEMCG_CHARGE_BATCH
> is used for both charging and statistics/events updating, and is
> set to 32, which may be good for acc
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