From: "Yan, Zheng" <zheng.z.yan@intel.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl,
acme@infradead.org, eranian@google.com, andi@firstfloor.org,
Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH v4 0/9] perf, x86: large PEBS interrupt threshold
Date: Thu, 31 Jul 2014 15:18:13 +0800 [thread overview]
Message-ID: <53D9EDB5.6020304@intel.com> (raw)
In-Reply-To: <20140731071625.GA4209@gmail.com>
On 07/31/2014 03:16 PM, Ingo Molnar wrote:
>
> * Yan, Zheng <zheng.z.yan@intel.com> wrote:
>
>> This patch series implements large PEBS interrupt threshold. For some
>> limited cases, it can significantly reduce the sample overhead. Please
>> read patch 6's commit message for more information.
>>
>> changes since v1:
>> - drop patch 'perf, core: Add all PMUs to pmu_idr'
>> - add comments for case that multiple counters overflow simultaneously
>> changes since v2:
>> - rename perf_sched_cb_{enable,disable} to perf_sched_cb_user_{inc,dec}
>> - use flag to indicate auto reload mechanism
>> - move codes that setup PEBS sample data to separate function
>> - output the PEBS records in batch
>> - enable this for All (PEBS capable) hardware
>> - more description for the multiplex
>> changes since v3:
>> - ignore conflicting PEBS record
>
> Please include performance measurements, 'significantly reduces sample
> overhead' is a totally inadequate description to judge this patch set.
patch 6 contains performance data.
>
> Please also include total diffstat in the 0/N mail.
>
will do.
Regards
Yan, Zheng
> Thanks,
>
> Ingo
>
next prev parent reply other threads:[~2014-07-31 7:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-31 6:44 [PATCH v4 0/9] perf, x86: large PEBS interrupt threshold Yan, Zheng
2014-07-31 6:44 ` [PATCH v4 1/9] perf, core: introduce pmu context switch callback Yan, Zheng
2014-07-31 6:44 ` [PATCH v4 2/9] perf, x86: use context switch callback to flush LBR stack Yan, Zheng
2014-07-31 6:44 ` [PATCH v4 3/9] perf, x86: use the PEBS auto reload mechanism when possible Yan, Zheng
2014-07-31 6:44 ` [PATCH v4 4/9] perf, x86: introduce setup_pebs_sample_data() Yan, Zheng
2014-07-31 6:45 ` [PATCH v4 5/9] perf, x86: large PEBS interrupt threshold Yan, Zheng
2014-07-31 6:45 ` [PATCH v4 6/9] perf, x86: handle multiple records in PEBS buffer Yan, Zheng
2014-07-31 6:45 ` [PATCH v4 7/9] perf, x86: drain PEBS buffer during context switch Yan, Zheng
2014-07-31 6:45 ` [PATCH v4 8/9] perf, x86: enlarge PEBS buffer Yan, Zheng
2014-07-31 6:45 ` [PATCH v4 9/9] tools, perf: Allow the user to disable time stamps Yan, Zheng
2014-07-31 14:45 ` Arnaldo Carvalho de Melo
2014-08-13 5:13 ` [tip:perf/core] perf record: Honour --no-time command line option tip-bot for Andi Kleen
2014-07-31 7:16 ` [PATCH v4 0/9] perf, x86: large PEBS interrupt threshold Ingo Molnar
2014-07-31 7:18 ` Yan, Zheng [this message]
2014-07-31 7:25 ` Ingo Molnar
2014-07-31 7:27 ` Peter Zijlstra
2014-07-31 7:36 ` Yan, Zheng
2014-07-31 7:49 ` Peter Zijlstra
2014-07-31 14:50 ` Andi Kleen
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