On Mon 04-01-21 22:44:02, Feng Tang wrote:
> On Mon, Jan 04, 2021 at 03:11:40PM +0100, Michal Hocko wrote:
> > On Mon 04-01-21 21:34:45, Feng Tang wrote:
> > > Hi Michal,
> > >
> > > On Mon, Jan 04, 2021 at 02:03:57PM +0100, Michal Hocko wrote:
> > > > On Tue 29-12-20 22:35:13, Feng Tang wrote:
>
On Mon, Jan 04, 2021 at 03:11:40PM +0100, Michal Hocko wrote:
> On Mon 04-01-21 21:34:45, Feng Tang wrote:
> > Hi Michal,
> >
> > On Mon, Jan 04, 2021 at 02:03:57PM +0100, Michal Hocko wrote:
> > > On Tue 29-12-20 22:35:13, Feng Tang wrote:
> > > > When checking a memory cgroup related
On Mon 04-01-21 21:34:45, Feng Tang wrote:
> Hi Michal,
>
> On Mon, Jan 04, 2021 at 02:03:57PM +0100, Michal Hocko wrote:
> > On Tue 29-12-20 22:35:13, Feng Tang wrote:
> > > When checking a memory cgroup related performance regression [1],
> > > from the perf c2c profiling data, we found high
Hi Michal,
On Mon, Jan 04, 2021 at 02:03:57PM +0100, Michal Hocko wrote:
> On Tue 29-12-20 22:35:13, Feng Tang wrote:
> > When checking a memory cgroup related performance regression [1],
> > from the perf c2c profiling data, we found high false sharing for
> > accessing 'usage' and 'parent'.
> >
On Tue 29-12-20 22:35:13, Feng Tang wrote:
> When checking a memory cgroup related performance regression [1],
> from the perf c2c profiling data, we found high false sharing for
> accessing 'usage' and 'parent'.
>
> On 64 bit system, the 'usage' and 'parent' are close to each other,
> and easy
On Tue, Dec 29, 2020 at 08:56:42AM -0800, Roman Gushchin wrote:
> On Tue, Dec 29, 2020 at 10:35:13PM +0800, Feng Tang wrote:
> > When checking a memory cgroup related performance regression [1],
> > from the perf c2c profiling data, we found high false sharing for
> > accessing 'usage' and
On Tue, Dec 29, 2020 at 10:35:13PM +0800, Feng Tang wrote:
> When checking a memory cgroup related performance regression [1],
> from the perf c2c profiling data, we found high false sharing for
> accessing 'usage' and 'parent'.
>
> On 64 bit system, the 'usage' and 'parent' are close to each
When checking a memory cgroup related performance regression [1],
from the perf c2c profiling data, we found high false sharing for
accessing 'usage' and 'parent'.
On 64 bit system, the 'usage' and 'parent' are close to each other,
and easy to be in one cacheline (for cacheline size == 64+ B).
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