From: Peter Zijlstra <peterz@infradead.org>
To: Ajay Kaher <ajay.kaher@broadcom.com>
Cc: mingo@redhat.com, acme@kernel.org, namhyung@kernel.org,
mark.rutland@arm.com, rostedt@goodmis.org,
alexander.shishkin@linux.intel.com, jolsa@kernel.org,
irogers@google.com, adrian.hunter@intel.com,
kan.liang@linux.intel.com, yangjihong1@huawei.com,
zegao2021@gmail.com, leo.yan@linux.dev, asmadeus@codewreck.org,
siyanteng@loongson.cn, sunhaiyong@loongson.cn,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
alexey.makhalov@broadcom.com, vasavi.sirnapalli@broadcom.com
Subject: Re: [PATCH RFC 1/3] perf/core: add logic to collect off-cpu sample
Date: Thu, 11 Jul 2024 23:49:36 +0200 [thread overview]
Message-ID: <20240711214936.GH27299@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <1720700179-22839-2-git-send-email-ajay.kaher@broadcom.com>
On Thu, Jul 11, 2024 at 05:46:17PM +0530, Ajay Kaher wrote:
> following logics has been added to collect the off-cpu sample:
>
> - 'task_pt_regs(current)' has been used to capture registers
> status off-cpu sample.
>
> - off-cpu time represent the time period for which the target
> process not occupying the cpu cycles. And calculate as:
>
> off-cpu time = swap-in time - swap-out time
>
I have absolutely no idea what you're trying to do :/ The above does not
constitute a comprehensible Changelog.
next prev parent reply other threads:[~2024-07-11 21:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-11 12:16 [PATCH RFC 0/3] perf: add logic to collect off-cpu samples Ajay Kaher
2024-07-11 12:16 ` [PATCH RFC 1/3] perf/core: add logic to collect off-cpu sample Ajay Kaher
2024-07-11 21:49 ` Peter Zijlstra [this message]
2024-07-14 16:23 ` Ajay Kaher
2024-07-15 11:48 ` Peter Zijlstra
2024-07-11 12:16 ` [PATCH RFC 2/3] perf/record: add options --off-cpu-kernel Ajay Kaher
2024-07-11 12:16 ` [PATCH RFC 3/3] perf/report: add off-cpu samples Ajay Kaher
2024-07-11 21:58 ` [PATCH RFC 0/3] perf: add logic to collect " Ian Rogers
2024-07-13 7:42 ` Ajay Kaher
2024-07-14 18:32 ` Ian Rogers
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