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Sender: Junio C Hamano <jch2355@gmail.com>
From:   Junio C Hamano <gitster@pobox.com>
To:     Jeff King <peff@peff.net>
Cc:     git@vger.kernel.org, Eric Sunshine <sunshine@sunshineco.com>,
        Phillip Wood <phillip.wood123@gmail.com>,
        Michael J Gruber <git@grubix.eu>
Subject: Re: [PATCH 0/4] some chainlint fixes and performance improvements
References: <20230328202043.GA1241391@coredump.intra.peff.net>
        <20230328210814.GA1754178@coredump.intra.peff.net>
        <20230330220823.GA130426@coredump.intra.peff.net>
Date:   Thu, 30 Mar 2023 15:16:21 -0700
In-Reply-To: <20230330220823.GA130426@coredump.intra.peff.net> (Jeff King's
        message of "Thu, 30 Mar 2023 18:08:23 -0400")
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Jeff King <peff@peff.net> writes:

> When the output is going to the terminal, then the terminal is consuming
> CPU, and the frequency scales up. So it's faster when we show the
> output, even though we're doing more work, because the CPU clock is
> faster.

That's disgustingly sick and crazy ;-).  But it does explain the symptom
and it sounds like that "powersave" is a poor match for measurement.

> Switching to the "performance" governor makes the problem go
> away.
> ...
> So no effect on the series (good), but I didn't want to leave the
> mystery unsolved on the list. :)

Thanks.