netdev - Re: [PATCH] selftests/bpf: enlarge timeout to 3 seconds for test

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Date:   Wed, 18 Aug 2021 10:15:17 +0000
From:   "lizhijian@...itsu.com" <lizhijian@...itsu.com>
To:     "lizhijian@...itsu.com" <lizhijian@...itsu.com>,
        "shuah@...nel.org" <shuah@...nel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>
CC:     "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii@...nel.org" <andrii@...nel.org>,
        "kafai@...com" <kafai@...com>,
        "songliubraving@...com" <songliubraving@...com>,
        "yhs@...com" <yhs@...com>,
        "kpsingh@...nel.org" <kpsingh@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "philip.li@...el.com" <philip.li@...el.com>,
        "yifeix.zhu@...el.com" <yifeix.zhu@...el.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] selftests/bpf: enlarge timeout to 3 seconds for test_maps


Just noticed that 3 seconds is not enough sometimes, i'm trying to update to 10 seconds instead.

If 10 seconds works, i will send V2 to do that.

Thanks
Zhijian


On 18/08/2021 15:16, Li Zhijian wrote:
> 0Day robot observed that it's easily timeout on a heavy load host.
> -------------------
>   # selftests: bpf: test_maps
>   # Fork 1024 tasks to 'test_update_delete'
>   # Fork 1024 tasks to 'test_update_delete'
>   # Fork 100 tasks to 'test_hashmap'
>   # Fork 100 tasks to 'test_hashmap_percpu'
>   # Fork 100 tasks to 'test_hashmap_sizes'
>   # Fork 100 tasks to 'test_hashmap_walk'
>   # Fork 100 tasks to 'test_arraymap'
>   # Fork 100 tasks to 'test_arraymap_percpu'
>   # Failed sockmap unexpected timeout
>   not ok 3 selftests: bpf: test_maps # exit=1
>   # selftests: bpf: test_lru_map
>   # nr_cpus:8
> -------------------
> Since this test will be scheduled by 0Day to a random host that could have
> only a few cpus(2-8), enlarge the timeout to avoid a false NG report.
>
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Li Zhijian <lizhijian@...fujitsu.com>
> ---
>   tools/testing/selftests/bpf/test_maps.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
> index 30cbf5d98f7d..72673e0428fd 100644
> --- a/tools/testing/selftests/bpf/test_maps.c
> +++ b/tools/testing/selftests/bpf/test_maps.c
> @@ -985,7 +985,7 @@ static void test_sockmap(unsigned int tasks, void *data)
>   
>   		FD_ZERO(&w);
>   		FD_SET(sfd[3], &w);
> -		to.tv_sec = 1;
> +		to.tv_sec = 3;
>   		to.tv_usec = 0;
>   		s = select(sfd[3] + 1, &w, NULL, NULL, &to);
>   		if (s == -1) {