[PATCH] test: fix box/iproto_stress sporadic failure

[Vladimir Davydov]

On Thu, Feb 28, 2019 at 05:24:06PM +0300, Vladimir Davydov wrote:
> This patch fixes the following test failure:
> 
>  | --- box/iproto_stress.result	Tue Dec 25 09:56:54 2018
>  | +++ box/iproto_stress.reject	Tue Dec 25 10:12:22 2018
>  | @@ -80,7 +80,7 @@
>  |  ...
>  |  n_workers -- 0
>  |  ---
>  | -- 0
>  | +- 340
>  |  ...
>  |  n_errors -- 0
>  |  ---
>  | @@ -93,5 +93,3 @@
>  |  ---
>  |  ...
>  |  box.cfg{net_msg_max = net_msg_max}
>  | ----
>  | -...
> 
> The problem is the test is quite cpu intensive so if the host is heavily
> loaded (as it is often the case when tests are run on Travis CI), it may
> take a few minutes to complete, while the timeout is set to 10 seconds.
> 
> To fix it, let's
>  - Increase the timeout up to 60 seconds and use test_run.wait_cond
>    instead of a homebrew loop.
>  - Decrease the number of fibers from 400 down to 100 and adjust
>    box.cfg.net_msg_max respectively.
> 
> Closes #3911
> ---
> https://github.com/tarantool/tarantool/issues/3911
> https://github.com/tarantool/tarantool/tree/dv/test-fixes
> 
>  test/box/iproto_stress.result   | 10 ++++------
>  test/box/iproto_stress.test.lua |  7 +++----
>  2 files changed, 7 insertions(+), 10 deletions(-)

Pushed to 2.1 and 1.10.