[PATCH] gdb.base/siginfo-thread.exp: Increase timeout for 'gcore' command
Wei-min Pan
weimin.pan@oracle.com
Thu Mar 16 18:27:00 GMT 2017
Pedro Alves wrote:
> On 03/16/2017 04:00 PM, Wei-min Pan wrote:
>
>> Yao Qi wrote:
>>
>
>
>>> Did you see timeout fails in all gcore related tests? gdb_gcore_cmd is
>>> used in many places in gdb testsuite. Did you investigate why it is so
>>> slow to generate coredump in gdb?
>>>
>>>
>>>
>> No, only this test failed with timeout and did so consistently. The
>> generated core file was fine.
>> We suspect the slow disk performance was the culprit.
>>
>
> I agree with Yao, and I'm not convinced. The generated core file is just
> "8.6M" on my x86_64 Fedora 23 and the test runs in under 1s here.
>
> $ time make check TESTS="*/siginfo-thread.exp"
> ...
> real 0m0.781s
> user 0m0.554s
> sys 0m0.152s
>
>
> What's the size of the core you get? If you run the test manually,
> do we notice any kind of slowness?
>
The core size is a little over 9.0M but it took much longer to run this
individual test:
% time make check TESTS="*/siginfo-thread.exp"
...
real 0m11.743s
user 0m3.892s
sys 0m7.572s
And I didn't notice any slowness if the test was run by hand.
> If you have a general slowness issue in your testing host, then
> this should be affecting all gcore tests the same. We have some
> tests that generate big cores on purpose even.
>
Like I said, only this test consistently failed and the core file
generated was not that big.
Thanks.
> Thanks,
> Pedro Alves
>
>
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