netdev - Re: [PATCH bpf-next v4 3/5] selftests/bpf: test

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Date:   Fri, 1 Jun 2018 07:11:56 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Shuah Khan <shuah@...nel.org>, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH bpf-next v4 3/5] selftests/bpf: test_sockmap, timing
 improvements

On 05/30/2018 09:42 PM, Prashant Bhole wrote:
> Currently 10us delay is too low for many tests to succeed. It needs to
> be increased. Also, many corked tests are expected to hit rx timeout
> irrespective of timeout value.
> 
> - This patch sets 1000usec timeout value for corked tests because less
> than that causes broken-pipe error in tx thread. Also sets 1 second
> timeout for all other tests because less than that results in RX
> timeout
> - tests with apply=1 and higher number of iterations were taking lot
> of time. This patch reduces test run time by reducing iterations.
> 
> real    0m12.968s
> user    0m0.219s
> sys     0m14.337s
> 
> Fixes: a18fda1a62c3 ("bpf: reduce runtime of test_sockmap tests")
> Signed-off-by: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
> ---

OK seems more reasonable to me. We could probably even go lower
on some of the 'rate' values here if needed (512->128).

Acked-by: John Fastabend <john.fastabend@...il.com>