Nginx Windows High Traffic issues
mdounin at mdounin.ru
Thu Jun 26 18:44:16 UTC 2014
On Thu, Jun 26, 2014 at 09:41:15AM -0400, c0nw0nk wrote:
> So i spent a while on this one and turns out the problem is a little
> function in nginx's core called "worker_rlimit_nofile".
> But for me on windows (i don't know if it does it for linux users too.)
> grinds my site down to a halt unless you increase its value.
> Why does it do this ?
On unix, worker_rlimit_nofile does exactly what's documented: it
calls setrlimit(RLIMIT_NOFILE) within worker process. This allows
to change OS-imposed limit without restarting nginx. And there is
no default in nginx itself - the default is set by OS and it's
Note well that the words "without restarting" is actually the
reason why this directive exists at all. If a restart isn't a big
deal, then OS limit can be changed by native means ("ulimit -n"
In official nginx on Windows, worker_rlimit_nofile does nothing.
Not sure if there is an equivalent limit on Windows at all.
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