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References: <20210314164625.9312-1-lukma@denx.de>
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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Wed, 24 Mar 2021 12:17:45 -0700
Message-ID: <CAMe9rOpMU4QO9fkSkmW0-G462h9syb7hXs0fPSN0FfaBZm7i-Q@mail.gmail.com>
Subject: Re: [PATCH] tst: Provide test for select
To: Lukasz Majewski <lukma@denx.de>
Cc: Joseph Myers <joseph@codesourcery.com>, 
 Adhemerval Zanella <adhemerval.zanella@linaro.org>,
 Florian Weimer <fweimer@redhat.com>, 
 DJ Delorie <dj@redhat.com>, GNU C Library <libc-alpha@sourceware.org>, 
 Florian Weimer <fw@deneb.enyo.de>, Alistair Francis <alistair.francis@wdc.com>
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On Mon, Mar 22, 2021 at 4:33 AM Lukasz Majewski <lukma@denx.de> wrote:
>
> Dear Community,
>
> > This change adds new test to assess select()'s timeout related
> > functionality (the rdfs set provides valid fd - stderr - but during
> > normal program operation there is no data to be read, so one just
> > waits for timeout).
> >
> > To be more specific - two use cases are checked:
> > - if select() times out immediately when passed struct timeval has
> >   zero values of tv_usec and tv_sec.
> > - if select() times out after timeout specified in passed argument
>
> Do you have any comments regarding this patch?
>

This test failed on machines with more than 40 cores:

tst-select.c:54: 1616610088.851713938s not after 1616610089.851712804s
(difference 0.999998866s)
error: 1 test failures

I was doing 3 "makec -j28 check" in parallel.

H.J.