From: Peter Zijlstra <peterz@infradead.org>
To: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Kees Cook <keescook@chromium.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Petr Mladek <pmladek@suse.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Qian Cai <cai@lca.pw>, Joe Lawrence <joe.lawrence@redhat.com>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Sri Krishna chowdary <schowdary@nvidia.com>,
"Uladzislau Rezki (Sony)" <urezki@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Changbin Du <changbin.du@intel.com>,
Ard Biesheuvel <ardb@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Kent Overstreet <kent.overstreet@gmail.com>,
Gary Hook <Gary.Hook@amd.com>, Arnd Bergmann <arnd@arndb.de>,
Kan Liang <kan.liang@linux.intel.com>,
linux-kernel@vger.kernel.org,
Stephane Eranian <eranian@google.com>,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v3 00/10] Optimize cgroup context switch
Date: Thu, 14 Nov 2019 11:45:25 +0100 [thread overview]
Message-ID: <20191114104525.GU4131@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20191114003042.85252-1-irogers@google.com>
On Wed, Nov 13, 2019 at 04:30:32PM -0800, Ian Rogers wrote:
> Avoid iterating over all per-CPU events during cgroup changing context
> switches by organizing events by cgroup.
When last we spoke (Plumbers in Lisbon) you mentioned that this
optimization was yielding far less than expected. You had graphs showing
how the use of cgroups impacted event scheduling time and how this patch
set only reduced that a little.
Any update on all that? There seems to be a conspicuous lack of such
data here.
next prev parent reply other threads:[~2019-11-14 10:45 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-14 0:30 [PATCH v3 00/10] Optimize cgroup context switch Ian Rogers
2019-11-14 0:30 ` [PATCH v3 01/10] perf/cgroup: Reorder perf_cgroup_connect() Ian Rogers
2019-11-14 8:50 ` Peter Zijlstra
2019-11-14 0:30 ` [PATCH v3 02/10] lib: introduce generic min max heap Ian Rogers
2019-11-14 9:32 ` Peter Zijlstra
2019-11-14 9:35 ` Peter Zijlstra
2019-11-17 18:28 ` Joe Perches
2019-11-18 8:40 ` Peter Zijlstra
2019-11-18 11:50 ` Joe Perches
2019-11-18 12:21 ` Peter Zijlstra
2019-11-14 0:30 ` [PATCH v3 03/10] perf: Use min_max_heap in visit_groups_merge Ian Rogers
2019-11-14 9:39 ` Peter Zijlstra
2019-11-14 0:30 ` [PATCH v3 04/10] perf: Add per perf_cpu_context min_heap storage Ian Rogers
2019-11-14 9:51 ` Peter Zijlstra
2019-11-16 1:19 ` Ian Rogers
2019-11-14 0:30 ` [PATCH v3 05/10] perf/cgroup: Grow per perf_cpu_context heap storage Ian Rogers
2019-11-14 9:54 ` Peter Zijlstra
2019-11-14 0:30 ` [PATCH v3 06/10] perf/cgroup: Order events in RB tree by cgroup id Ian Rogers
2019-11-14 0:30 ` [PATCH v3 07/10] perf: simplify and rename visit_groups_merge Ian Rogers
2019-11-14 10:03 ` Peter Zijlstra
2019-11-16 1:20 ` Ian Rogers
2019-11-14 0:30 ` [PATCH v3 08/10] perf: cache perf_event_groups_first for cgroups Ian Rogers
2019-11-14 10:25 ` Peter Zijlstra
2019-11-16 1:20 ` Ian Rogers
2019-11-18 8:37 ` Peter Zijlstra
2019-11-14 0:30 ` [PATCH v3 09/10] perf: optimize event_filter_match during sched_in Ian Rogers
2019-11-14 0:30 ` [PATCH v3 10/10] perf/cgroup: Do not switch system-wide events in cgroup switch Ian Rogers
2019-11-14 10:43 ` Peter Zijlstra
2019-11-14 13:46 ` Liang, Kan
2019-11-14 13:57 ` Peter Zijlstra
2019-11-14 15:16 ` Liang, Kan
2019-11-14 15:24 ` Liang, Kan
2019-11-14 20:49 ` Liang, Kan
2019-11-14 0:42 ` [PATCH v3 00/10] Optimize cgroup context switch Ian Rogers
2019-11-14 10:45 ` Peter Zijlstra [this message]
2019-11-14 18:17 ` Ian Rogers
2019-12-06 23:16 ` Ian Rogers
2019-11-16 1:18 ` [PATCH v4 " Ian Rogers
2019-11-16 1:18 ` [PATCH v4 01/10] perf/cgroup: Reorder perf_cgroup_connect() Ian Rogers
2019-11-16 1:18 ` [PATCH v4 02/10] lib: introduce generic min max heap Ian Rogers
2019-11-21 11:11 ` Joe Perches
2019-11-16 1:18 ` [PATCH v4 03/10] perf: Use min_max_heap in visit_groups_merge Ian Rogers
2019-11-16 1:18 ` [PATCH v4 04/10] perf: Add per perf_cpu_context min_heap storage Ian Rogers
2019-11-16 1:18 ` [PATCH v4 05/10] perf/cgroup: Grow per perf_cpu_context heap storage Ian Rogers
2019-11-16 1:18 ` [PATCH v4 06/10] perf/cgroup: Order events in RB tree by cgroup id Ian Rogers
2019-11-16 1:18 ` [PATCH v4 07/10] perf: simplify and rename visit_groups_merge Ian Rogers
2019-11-16 1:18 ` [PATCH v4 08/10] perf: cache perf_event_groups_first for cgroups Ian Rogers
2019-11-16 1:18 ` [PATCH v4 09/10] perf: optimize event_filter_match during sched_in Ian Rogers
2019-11-16 1:18 ` [PATCH v4 10/10] perf/cgroup: Do not switch system-wide events in cgroup switch Ian Rogers
2019-12-06 23:15 ` [PATCH v5 00/10] Optimize cgroup context switch Ian Rogers
2019-12-06 23:15 ` [PATCH v5 01/10] perf/cgroup: Reorder perf_cgroup_connect() Ian Rogers
2019-12-06 23:15 ` [PATCH v5 02/10] lib: introduce generic min-heap Ian Rogers
2019-12-06 23:15 ` [PATCH v5 03/10] perf: Use min_max_heap in visit_groups_merge Ian Rogers
2019-12-08 7:10 ` kbuild test robot
2019-12-06 23:15 ` [PATCH v5 04/10] perf: Add per perf_cpu_context min_heap storage Ian Rogers
2019-12-06 23:15 ` [PATCH v5 05/10] perf/cgroup: Grow per perf_cpu_context heap storage Ian Rogers
2019-12-06 23:15 ` [PATCH v5 06/10] perf/cgroup: Order events in RB tree by cgroup id Ian Rogers
2019-12-06 23:15 ` [PATCH v5 07/10] perf: simplify and rename visit_groups_merge Ian Rogers
2019-12-06 23:15 ` [PATCH v5 08/10] perf: cache perf_event_groups_first for cgroups Ian Rogers
2019-12-06 23:15 ` [PATCH v5 09/10] perf: optimize event_filter_match during sched_in Ian Rogers
2019-12-06 23:15 ` [PATCH v5 10/10] perf/cgroup: Do not switch system-wide events in cgroup switch Ian Rogers
2020-02-14 7:51 ` [PATCH v6 0/6] Optimize cgroup context switch Ian Rogers
2020-02-14 7:51 ` [PATCH v6 1/6] perf/cgroup: Reorder perf_cgroup_connect() Ian Rogers
2020-02-14 16:11 ` Shuah Khan
2020-02-14 17:37 ` Peter Zijlstra
2020-03-06 14:42 ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-02-14 7:51 ` [PATCH v6 2/6] lib: introduce generic min-heap Ian Rogers
2020-02-14 22:06 ` Randy Dunlap
2020-02-17 16:29 ` Peter Zijlstra
2020-03-06 14:42 ` [tip: perf/core] lib: Introduce " tip-bot2 for Ian Rogers
2020-02-14 7:51 ` [PATCH v6 3/6] perf: Use min_heap in visit_groups_merge Ian Rogers
2020-02-17 17:23 ` Peter Zijlstra
2020-03-06 14:42 ` [tip: perf/core] perf/core: Use min_heap in visit_groups_merge() tip-bot2 for Ian Rogers
2020-02-14 7:51 ` [PATCH v6 4/6] perf: Add per perf_cpu_context min_heap storage Ian Rogers
2020-03-06 14:42 ` [tip: perf/core] perf/core: " tip-bot2 for Ian Rogers
2020-02-14 7:51 ` [PATCH v6 5/6] perf/cgroup: Grow per perf_cpu_context heap storage Ian Rogers
2020-03-06 14:42 ` [tip: perf/core] " tip-bot2 for Ian Rogers
2020-02-14 7:51 ` [PATCH v6 6/6] perf/cgroup: Order events in RB tree by cgroup id Ian Rogers
2020-02-14 19:32 ` [PATCH v6 0/6] Optimize cgroup context switch Ian Rogers
2020-02-17 16:18 ` Peter Zijlstra
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