linux-kernel - Re: [PATCH v2 10/10] perf test amd ibs: Add sample period unit test

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Message-ID: <Z1K5QQQNly-HuqkP@gmail.com>
Date: Fri, 6 Dec 2024 09:43:45 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Ravi Bangoria <ravi.bangoria@....com>
Cc: peterz@...radead.org, mingo@...hat.com, namhyung@...nel.org,
	acme@...nel.org, eranian@...gle.com, mark.rutland@....com,
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
	irogers@...gle.com, adrian.hunter@...el.com,
	kan.liang@...ux.intel.com, tglx@...utronix.de, bp@...en8.de,
	dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	santosh.shukla@....com, ananth.narayan@....com,
	sandipan.das@....com
Subject: Re: [PATCH v2 10/10] perf test amd ibs: Add sample period unit test


* Ravi Bangoria <ravi.bangoria@....com> wrote:

> On 06-Dec-24 10:47 AM, Ravi Bangoria wrote:
> > IBS Fetch and IBS Op pmus has various constraints on supported sample
> > periods. Add perf unit tests to test those.
> > 
> > Running it in parallel with other tests causes intermittent failures.
> > Mark it exclusive to force it to run sequentially.
> 
> The verbose mode of unit test is quite exhaustive so I've not added it
> in the commit description. Here is the sample output on a Zen5 machine:
> 
> Without patches:

> With patches:

That's not a problem - please include this in the changelog for the 
next version, it's useful information.

Thanks,

	Ingo