netdev - Re: [PATCH net-next 00/15] net: Add functional tests for L3 and L4

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Message-ID: <CAADnVQJ7GUX=EWP0RWxpe71cGx2cTMyKHsA+6RRX0P05FPMg3w@mail.gmail.com>
Date:   Fri, 2 Aug 2019 08:15:49 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     David Ahern <dsahern@...il.com>
Cc:     David Ahern <dsahern@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 00/15] net: Add functional tests for L3 and L4

On Thu, Aug 1, 2019 at 9:11 PM David Ahern <dsahern@...il.com> wrote:
>
> On 8/1/19 6:19 PM, Alexei Starovoitov wrote:
> > Do you really need 'sleep 1' everywhere?
> > It makes them so slow to run...
> > What happens if you just remove it ? Tests will fail? Why?
>
> yes, the sleep 1 is needed. A server process is getting launched into
> the background. It's status is not relevant; the client's is the key.
> The server needs time to initialize. And, yes I tried forking and it
> gets hung up with bash and capturing the output for verbose mode.

That means that the tests are not suitable for CI servers
where cpus are pegged to 100% and multiple tests run in parallel.
The test will be flaky :(