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Date:   Mon, 1 Nov 2021 18:35:05 -0700
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Subject: Re: Performance regression: thread wakeup time (latency) increased up
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From:   Norbert <nbrtt01@gmail.com>
To:     "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Peter Zijlstra <peterz@infradead.org>
Cc:     Steven Rostedt <rostedt@goodmis.org>, linux-kernel@vger.kernel.org,
        Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Yunfeng Ye <yeyunfeng@huawei.com>, frederic@kernel.org
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On 10/23/21 22:09, Norbert wrote:
> (The more important part being SCHED_FIFO.)

Please ignore this side-comment. The decisive factor is 
isolated/nohz_full vs normal.

There are indications that "normal" times have become worse lately 
(measured in 5.14.14), relative to earlier, but in that area the 
fluctuations I see in my current tests are too large to get a clear picture.

Best, Norbert