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From s...@apache.org
Subject cvs commit: modperl-docs/src/docs/2.0/user/troubleshooting troubleshooting.pod
Date Thu, 26 Aug 2004 23:48:41 GMT
stas        2004/08/26 16:48:41

  Modified:    src/docs/2.0/user Changes.pod
               src/docs/2.0/user/troubleshooting troubleshooting.pod
  Log:
  A new troubleshooting section on how to resolve can't locate file foo,
  when there is a system limit on the maximum open files.
  
  Revision  Changes    Path
  1.5       +4 -0      modperl-docs/src/docs/2.0/user/Changes.pod
  
  Index: Changes.pod
  ===================================================================
  RCS file: /home/cvs/modperl-docs/src/docs/2.0/user/Changes.pod,v
  retrieving revision 1.4
  retrieving revision 1.5
  diff -u -u -r1.4 -r1.5
  --- Changes.pod	26 Jan 2004 19:10:40 -0000	1.4
  +++ Changes.pod	26 Aug 2004 23:48:41 -0000	1.5
  @@ -11,6 +11,10 @@
   
   =head1 ...
   
  +A new troubleshooting section on how to resolve can't locate file foo,
  +when there is a system limit on the maximum open files. By Ken Simpson
  +E<lt>ksimpsonE<lt>atE<gt>larch.mailchannels.comE<gt>.
  +
   A few corrections in the config chapter by Jean-Sébastien Guay
   E<lt>jean_seb E<lt>atE<gt> videotron.caE<gt>.
   
  
  
  
  1.24      +48 -0     modperl-docs/src/docs/2.0/user/troubleshooting/troubleshooting.pod
  
  Index: troubleshooting.pod
  ===================================================================
  RCS file: /home/cvs/modperl-docs/src/docs/2.0/user/troubleshooting/troubleshooting.pod,v
  retrieving revision 1.23
  retrieving revision 1.24
  diff -u -u -r1.23 -r1.24
  --- troubleshooting.pod	25 May 2004 02:04:15 -0000	1.23
  +++ troubleshooting.pod	26 Aug 2004 23:48:41 -0000	1.24
  @@ -21,6 +21,54 @@
   =head1 Configuration and Startup
   
   
  +=head2 Can't locate F<TestFilter/in_str_consume.pm> in C<@INC>...
  +
  +Sometimes you get a problem of perl not being able to locate a certain
  +Perl module. This can happen in the mod_perl test suite or in the
  +normal mod_perl setup. One of the possible reasons is a low limit on
  +the number of files that can be opened by a single process. To check
  +whether this is the problem run the process under C<strace(1)> or an
  +equivalent utility.
  +
  +For example on OpenBSD 3.5 the default setting for a maximum number of
  +files opened by a single process seems to be 64, so when you try to
  +run the mod_perl test suite, which opens a few hundreds of files, you
  +will have a problem. e.g. the test suite may fail as:
  +
  +  [Wed Aug 25 09:49:40 2004] [info] 26 Apache:: modules loaded
  +  [Wed Aug 25 09:49:40 2004] [info] 7 APR:: modules loaded
  +  [Wed Aug 25 09:49:40 2004] [info] base server + 20 vhosts ready 
  +  to run tests
  +  [Wed Aug 25 09:49:40 2004] [error] Can't locate 
  +  TestFilter/in_str_consume.pm in @INC (@INC contains: ...
  +
  +Running the system calls tracing program (C<ktrace(1)> on OpenBSD,
  +C<strace(1)> on Linux):
  +
  +  % sudo ktrace -d /usr/local/apache/bin/httpd -d /tmp/mod_perl-2.0/t \
  +    -f /tmp/mod_perl-2.0/t/conf/httpd.conf -DAPACHE2 -X
  +
  +looking at the ktrace dump reveals:
  +
  + 16641 httpd    NAMI "/tmp/mod_perl-2.0/t/lib/TestFilter/in_str_consume.pmc"
  + 16641 httpd    RET   stat -1 errno 2 No such file or directory
  + 16641 httpd    CALL  open(0x3cdae100,0,0)
  + 16641 httpd    RET   open -1 errno 24 Too many open files
  +
  +It's clear that Perl can't load F<TestFilter/in_str_consume.pm>
  +because it can't open the file.
  +
  +This problem can be resolved by increasing the open file limit to 128
  +(or higher):
  +
  + $ ulimit -n 128
  +
  +
  +
  +
  +
  +
  +
   
   =head2 "mod_perl.c" is not compatible with this version of Apache
   (found 20020628, need 20020903)
  
  
  

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