From: "Wangnan (F)" <wangnan0@huawei.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>, Ingo Molnar <mingo@kernel.org>,
<linux-kernel@vger.kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Borislav Petkov <bp@suse.de>, David Ahern <dsahern@gmail.com>,
"Frederic Weisbecker" <fweisbec@gmail.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Stephane Eranian <eranian@google.com>
Subject: Re: [RFC 00/13] perf_env/CPU socket reorg/fixes
Date: Mon, 14 Sep 2015 09:26:40 +0800 [thread overview]
Message-ID: <55F62250.7050605@huawei.com> (raw)
In-Reply-To: <20150911130339.GI23511@kernel.org>
On 2015/9/11 21:03, Arnaldo Carvalho de Melo wrote:
> Em Fri, Sep 11, 2015 at 08:20:54PM +0800, Wangnan (F) escreveu:
>> I have tested patch 1 to 10. They looks good to me except patch 4/13. Please
> Ok, I'll take that as a Tested-by: you for 1-10 with 4/13 having the
> checks added, ok?
Sure.
Tested-by: Wang Nan <wangnan0@huawei.com> // for patch 1-10 except 4
>> see my email in that thread.
> I add those checks.
>
>> However, during the testing I found a limitation related to cpu
>> online/offline and 'perf top' that, if I offline most of cores before
>> 'perf top', then online them during 'perf top' running, 'perf top'
>> dooesn't report new CPUs. It still reports the CPUs which are online
> <SNIP>
>
>> However, It is relatively a rare case. I don't think we have to fix it
>> in this patchset.
> Yup, unrelated to this patchset. But we need to seamlessly support that
> situation, even telling the user that a CPU went offline/online.
>
> - Arnaldo
prev parent reply other threads:[~2015-09-14 1:26 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-09 19:50 [RFC 00/13] perf_env/CPU socket reorg/fixes Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 01/13] perf env: Move perf_env out of header.h and session.c into separate object Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 02/13] perf env: Rename some leftovers from rename to perf_env Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 03/13] perf env: Adopt perf_header__set_cmdline Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 04/13] perf env: Introduce read_cpu_topology_map() method Arnaldo Carvalho de Melo
2015-09-09 21:41 ` Liang, Kan
2015-09-10 13:12 ` Arnaldo Carvalho de Melo
2015-09-10 20:00 ` Liang, Kan
2015-09-10 20:12 ` Arnaldo Carvalho de Melo
2015-09-10 20:14 ` Liang, Kan
2015-09-11 10:20 ` Wangnan (F)
2015-09-11 14:40 ` Arnaldo Carvalho de Melo
2015-09-11 15:33 ` Arnaldo Carvalho de Melo
2015-09-11 16:14 ` Namhyung Kim
2015-09-11 16:32 ` Arnaldo Carvalho de Melo
2015-09-14 9:09 ` [tip:perf/urgent] perf header: Fixup reading of HEADER_NRCPUS feature tip-bot for Arnaldo Carvalho de Melo
2015-09-15 7:04 ` [tip:perf/core] perf env: Introduce read_cpu_topology_map() method tip-bot for Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 05/13] perf sort: Set flag stating if the "socket" key is being used Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 06/13] perf top: Cache the cpu topology info when "-s socket" is used Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 07/13] perf hists browser: Fixup the "cpu" column width calculation Arnaldo Carvalho de Melo
2015-09-11 10:52 ` Wangnan (F)
2015-09-09 19:50 ` [PATCH 08/13] perf machine: Add pointer to sample's environment Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 09/13] perf event: Use machine->env to find the cpu -> socket mapping Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 10/13] perf report: Do not blindly use env->cpu[al.cpu].socket_id Arnaldo Carvalho de Melo
2015-09-11 11:50 ` Wangnan (F)
2015-09-09 19:50 ` [PATCH 11/13] Revert "perf evsel: Add a backpointer to the evlist a evsel is in" Arnaldo Carvalho de Melo
2015-09-09 21:42 ` Liang, Kan
2015-09-09 19:50 ` [PATCH 12/13] perf evsel: Remove forward declaration of 'struct perf_evlist' Arnaldo Carvalho de Melo
2015-09-09 19:50 ` [PATCH 13/13] Revert "perf evlist: Add backpointer for perf_env to evlist" Arnaldo Carvalho de Melo
2015-09-10 9:19 ` [RFC 00/13] perf_env/CPU socket reorg/fixes Jiri Olsa
2015-09-10 14:13 ` Arnaldo Carvalho de Melo
2015-09-11 12:20 ` Wangnan (F)
2015-09-11 13:03 ` Arnaldo Carvalho de Melo
2015-09-11 13:29 ` Arnaldo Carvalho de Melo
2015-09-11 13:30 ` Arnaldo Carvalho de Melo
2015-09-11 13:36 ` Arnaldo Carvalho de Melo
2015-09-14 1:37 ` Wangnan (F)
2015-09-14 1:26 ` Wangnan (F) [this message]
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