Re: QMail Performance Question & Miscellaneous Issues

[Steve Wolfe]

> The documentation of RedHat.com is technically accurate, just not
> complete.  There are two limits.  One is the total number of
> files handles for all processes.  This is adjustable through
> /proc/sys/fs/file-max.  The other limit is the number of file
> handles opened by a single process.  This is dynamic in the newer
> kernels.  You are probably running into a resource limit.  Try:
>
>     ulimit -n
>
> I just opened 2000 files after using "ulimit -n 2048" (the
> default was 1024).  No recompile was required.

Ah.  In this case, the number of files that a user can have open (1024) was
the same as the total number of files that the entire system could have - I
imagine that raising user files above total system files doesn't do much
good. : )

steve