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From: Peter Maydell <peter.maydell@linaro.org>
Date: Sat, 19 May 2018 12:36:40 +0100
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Subject: Re: [Qemu-devel] [RFC PATCH 2/2] tests/Makefile: comment out flakey
 tests
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To: Thomas Huth <thuth@redhat.com>
Cc: =?UTF-8?B?QWxleCBCZW5uw6ll?= <alex.bennee@linaro.org>, Fam Zheng <famz@redhat.com>, Stefan Berger <stefanb@linux.vnet.ibm.com>, QEMU Developers <qemu-devel@nongnu.org>, Stefan Hajnoczi <stefanha@redhat.com>, =?UTF-8?B?TWFyYy1BbmRyw6kgTHVyZWF1?= <marcandre.lureau@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>

On 19 May 2018 at 07:10, Thomas Huth <thuth@redhat.com> wrote:
> On 18.05.2018 20:31, Peter Maydell wrote:
>> Another flaky test for the collection:
>>
>> TEST: tests/boot-serial-test... (pid=25144)
>>   /sparc64/boot-serial/sun4u:                                          **
>> ERROR:/home/petmay01/linaro/qemu-for-merges/tests/boot-serial-test.c:140:check_guest_output:
>> assertion failed: (output_ok)
>> FAIL
>>
>> Probably another "overly optimistic timeout" setting. (Failed
>> for me on x86-64 host just now.)
>
> That test normally finishes within 3 seconds on my machine. The test
> timeout is 60 seconds. How much load did you have on that machine to go
> from 3s to 60s ?

The machine is my desktop box; I didn't notice anything too
terrible while I was using it interactively at the same time
the test build was running. The test build will run at -j8;
it might also have been during a different -j8 build/test
on the same machine for a different source tree.

60s is quite a long time, so maybe there's an intermittent
deadlock in there instead...

thanks
-- PMM