[PATCH] vinyl: warn when transaction waits for quota for too long

[Konstantin Osipov]

* Vladimir Davydov <vdavydov.dev at gmail.com> [18/02/14 17:03]:

> If a vinyl transaction stalls waiting for quota for more than
> box.cfg.too_long_threshold seconds, emit a warning to the log:
> 
>   W> waited for 699089 bytes of vinyl memory quota for too long: 0.504 sec
> 
> This will help us understand whether our users experience lags
> due to absence of throttling in vinyl (see #1862).

OK to push.

-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.org - www.twitter.com/kostja_osipov