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List:       apache-modperl-dev
Subject:    Re: [Fwd: mod_perl-1.99_11 on HP-UX 11.22]
From:       Stas Bekman <stas () stason ! org>
Date:       2003-11-19 0:13:29
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Stas Bekman wrote:
> forwarding this to where this message belongs
> 
> -------- Original Message --------
> Subject: mod_perl-1.99_11 on HP-UX 11.22
> Date: Tue, 18 Nov 2003 15:16:49 -0800 (PST)
> From: TJ Saunders <tjs@ActiveState.com>
> To: stas@stason.org
> 
> 
> Hello, Stas.  I'm building mod_perl-1.99_11 using Apache 2.0.48 and perl
> 5.8.2 on HP-UX 11.22 using HP's C compiler -- everything built just fine.
> However, when I went to run the mod_perl test suite, quite a few of the
> tests failed.  The error in the t/logs/error_log was the "Can't locate foo
> in @INC (...)" message, which unfortunately is not verbose enough to
> pinpoint the culprit.
> 
> Using tusc, I eventually tracked it down to open() returning EMFILE for
> some of the test suite's require()s.  Turns out the default number of
> per-process open files in the shell was quite low: 60.  Setting 'ulimit -n
> 1024' made the tests pass successfully.
> 
> If possible, could this checking/setting of this resource limit be done by
> TestRun.pm, similarly to what is done for the core size limit, so that it
> doesn't bite other developers?

Thanks for tracing this problem, TJ. I guess we could do what you propose (as 
we already use ulimit to allow core files), though I'm not entirely sure that 
it's safe to hardcode it as 1024. What if the system's hard limit is set to a 
lower number? What if someone else's test suite will need to open more than 
1024 files? (since Apache-Test is used by many other projects)

Therefore I think we should set it to one of the following: hard,  soft,  or 
unlimited. Probably "hard" is the best choice. I'm not sure how cross-platform 
this is, but that's what my bash manpage on linux suggests.  Though it doesn't 
see to work for -n.

Of course one could check /proc/sys/fs/file-nr but again I don't think this is 
cross-platform.

Further suggestions are very welcome.

__________________________________________________________________
Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/     mod_perl Guide ---> http://perl.apache.org
mailto:stas@stason.org http://use.perl.org http://apacheweek.com
http://modperlbook.org http://apache.org   http://ticketmaster.com


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