linux-kernel - Re: [PATCH] Fixes hang in zstd compression test by changing the source of random data.

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Message-ID: <20190822212450.GK3929@kernel.org>
Date:   Thu, 22 Aug 2019 18:24:50 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     James Clark <James.Clark@....com>
Cc:     "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "alexander.shishkin@...ux.intel.com" 
        <alexander.shishkin@...ux.intel.com>,
        "jolsa@...hat.com" <jolsa@...hat.com>,
        "namhyung@...nel.org" <namhyung@...nel.org>,
        "alexey.budankov@...ux.intel.com" <alexey.budankov@...ux.intel.com>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>,
        nd <nd@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jeremy Linton <Jeremy.Linton@....com>
Subject: Re: [PATCH] Fixes hang in zstd compression test by changing the
 source of random data.

Em Thu, Aug 22, 2019 at 06:24:07PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Aug 22, 2019 at 01:55:15PM +0000, James Clark escreveu:
> > Running 'perf test' with zstd compression linked will hang at the test
> > 'Zstd perf.data compression/decompression' because /dev/random blocks
> > reads until there is enough entropy. This means that the test will
> > appear to never complete unless the mouse is continually moved while
> > running it.
> 
> message came mangled, had to do it by hand and then hook up your header
> so as to get the correct date, attribution, etc, please check
> Documentation/process/email-clients.rst,

Having said that, thanks, applied.

- Arnaldo