[Chicken-janitors] Re: #316: spiffy hangs sometimes

[Chicken Trac]

#316: spiffy hangs sometimes
-------------------------+--------------------------------------------------
  Reporter:  felix       |       Owner:                            
      Type:  defect      |      Status:  new                       
  Priority:  critical    |   Milestone:  4.6.0                     
 Component:  extensions  |     Version:  4.5.x                     
Resolution:              |    Keywords:  spiffy call-cc.org madness
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Comment(by mario):

 I could set up a qwiki instance for debugging on call-cc.org (Felix: I
 didn't use your home not to mess too much with it).

 It's on {{{/home/mario/wiki-debug}}}.  Chicken is on {{{/home/mario/wiki-
 debug/chicken}}} and it was compiled with {{{DEBUGBUILD=1}}}.  I've
 installed the latest trunk code for svn-client, spiffy and qwiki.

 {{{/home/mario/wiki-debug}}} contains a copy of the svn repo and the same
 directory structure used by spiffy (e.g., {{{/home/mario/wiki-debug/etc}}}
 for {{{/etc}}}, {{{/home/mario/wiki-debug/var}}} for {{{/var}}} and so
 on).

 Peter and me run a debugging session today and found out that one of the
 problems is still fd leak, caused by svn-client (or the underlying libsvn-
 client).

 We've run the server and stressed it with wget ({{{wget -r -l5}}}).  Using
 lsof, we observed the number of lines like

 {{{
 csi     7634 mario  961u   REG       8,6     736    1020 /tmp/svnwiki-cat-
 QNZIrJ (deleted)
 csi     7634 mario  962u   REG       8,6     701    1021 /tmp/svnwiki-cat-
 YQhjmY (deleted)
 csi     7634 mario  963u   REG       8,6   11834    1022 /tmp/svnwiki-cat-
 9hY3od (deleted)
 }}}

 increased during the test.  According to ulimit, the max number of open
 files is 1024, and spiffy died when the number of {{{svnwiki-cat}}} files
 from lsof got close to 1024.

 The latest messages before segmentation fault were:

 {{{
 svn: '/home/mario/wiki-debug/tmp/qwiki/hive' is not under version control
 svn: Can't open file '/home/mario/wiki-debug/usr/local/repos/chicken-
 eggs/db/revs/4718': Too many open files
 svn: Can't open file '/home/mario/wiki-debug/usr/local/repos/chicken-
 eggs/db/revs/4718': Too many open files
 svn: Can't open file '/home/mario/wiki-debug/tmp/qwiki/.svn/entries': Too
 many open files
 }}}

 If you want to make some more tests, feel free to use my home dir.  Be
 sure to set the {{{PATH}}} to get things from the debug dir:

 {{{
 PATH=/home/mario/wiki-debug/chicken/bin/:/home/mario/wiki-debug/bin:$PATH
 csi -s bin/spiffy
 }}}

 If you get permissions problems, feel free to change them.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/316#comment:8>
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