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Message-ID: <6a643bc1-ca7f-a529-ec3c-c9a770b28f3b@huawei.com>
Date: Tue, 18 Jul 2023 09:43:54 +0800
From: shaozhengchao <shaozhengchao@...wei.com>
To: Matthieu Baerts <matthieu.baerts@...sares.net>, Jamal Hadi Salim
	<jhs@...atatu.com>, Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko
	<jiri@...nulli.us>, Shuah Khan <shuah@...nel.org>, Kees Cook
	<keescook@...omium.org>, "David S. Miller" <davem@...emloft.net>, Paul Blakey
	<paulb@...lanox.com>, Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
	<mptcp@...ts.linux.dev>
CC: Pedro Tammela <pctammela@...atatu.com>, Shuah Khan
	<skhan@...uxfoundation.org>, <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
	<stable@...r.kernel.org>
Subject: Re: [PATCH net 1/3] selftests: tc: set timeout to 15 minutes



On 2023/7/17 16:32, Matthieu Baerts wrote:
> Hi Zhengchao Shao,
> 
> On 14/07/2023 04:25, shaozhengchao wrote:
>>
>>
>> On 2023/7/14 5:16, Matthieu Baerts wrote:
>>> When looking for something else in LKFT reports [1], I noticed that the
>>> TC selftest ended with a timeout error:
>>>
>>>     not ok 1 selftests: tc-testing: tdc.sh # TIMEOUT 45 seconds
>>>
>>> The timeout had been introduced 3 years ago, see the Fixes commit below.
>>>
>>> This timeout is only in place when executing the selftests via the
>>> kselftests runner scripts. I guess this is not what most TC devs are
>>> using and nobody noticed the issue before.
>>>
>>> The new timeout is set to 15 minutes as suggested by Pedro [2]. It looks
>>> like it is plenty more time than what it takes in "normal" conditions.
>>>
>>> Fixes: 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second
>>> timeout per test")
>>> Cc: stable@...r.kernel.org
>>> Link:
>>> https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230711/testrun/18267241/suite/kselftest-tc-testing/test/tc-testing_tdc_sh/log [1]
>>> Link:
>>> https://lore.kernel.org/netdev/0e061d4a-9a23-9f58-3b35-d8919de332d7@tessares.net/T/ [2]
>>> Suggested-by: Pedro Tammela <pctammela@...atatu.com>
>>> Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
>>> ---
>>>    tools/testing/selftests/tc-testing/settings | 1 +
>>>    1 file changed, 1 insertion(+)
>>>
>>> diff --git a/tools/testing/selftests/tc-testing/settings
>>> b/tools/testing/selftests/tc-testing/settings
>>> new file mode 100644
>>> index 000000000000..e2206265f67c
>>> --- /dev/null
>>> +++ b/tools/testing/selftests/tc-testing/settings
>>> @@ -0,0 +1 @@
>>> +timeout=900
>>>
>> I remember last year when I tested all the tdc cases(qdisc + filter +
>> action + infra) in my vm machine, it took me nearly 20 minutes.
>> So I think it should be more than 1200 seconds if all cases need to be
>> tested.
> 
> Thank you for your feedback!
> 
Hi Matthieu:
> Be careful that here, it is the timeout to run "tdc.sh" only which is
> currently limited to:
> 
>    ./tdc.py -c actions --nobuildebpf
>    ./tdc.py -c qdisc
> 
> (not "filter", nor "infra" then)
> 
> I guess for this, 15 minutes is more than enough, no?
> 
15 minutes is enough for qdisc and actions. Thanks.

> At least on my side, I ran it in a i386 VM without KVM and it took less
> than 3 minutes [1].
> 
> Cheers,
> Matt
> 
> [1]
> https://tuxapi.tuxsuite.com/v1/groups/community/projects/matthieu.baerts/tests/2SWHb7PJfqkUX1m8rLu3GXbsHE0/logs?format=html


Reviewed-by: Zhengchao Shao <shaozhengchao@...wei.com>

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