Rails app suddenly stops working. RailsRunner errors?

[malffred]

Strange, on one of my LS servers my Rails application just doesn't want to seem to work. I don't think I change anything either. When I restart the server and I tail the stderr.log I get this:

/home/bugs/www//config/boot.rb:20:in `readlines': failed to allocate memory (NoMemoryError)
from /home/bugs/www//config/boot.rb:20
from /home/bugs/www//config/environment.rb:11
from /opt/lsws/fcgi-bin/RailsRunner.rb:3


There is plenty of memory. I've also upgrade all my gems. When I run the app via mongrel with ./script/server it runs fine so this only happens under Litespeed. Its the only Rails VHost I have on this particular server, any ideas? I've checked the settings and things seem fine, but anytime I go to the url it doesn't go anywhere.

I also just updated to the latest ruby-lsapi gem, 1.13 I think?

[mistwang]

You may need to up the memory soft/hard limit for the ruby process under ruby tab, or the server wide CGI config under security tab.

[malffred]

Originally Posted by mistwang

You may need to up the memory soft/hard limit for the ruby process under ruby tab, or the server wide CGI config under security tab.

mistwang, thanks for the tip. I did this and the previous error went away, but a similar error came up in its place:

/usr/local/lib/site_ruby/1.8/x86_64-linux/svn/ext/core.so: libexpat.so.1: failed to map segment from shared object: Cannot allocate memory - /usr/local/lib/site_ruby/1.8/x86_64-linux/svn/ext/core.so (LoadError)
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:496:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:343:in `new_constants_in'
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:496:in `require'
from /usr/local/lib/site_ruby/1.8/svn/error.rb:1
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:496:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:343:in `new_constants_in'
... 13 levels...
from /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active_support/dependencies.rb:443:in `require_dependency'
from /home/bugs/www/config/../lib/collaboa/lib/setup.rb:15:in `run'
from /home/bugs/www//config/environment.rb:65
from /opt/lsws/fcgi-bin/RailsRunner.rb:3

Hrm, do I just not have enough memory? Even doing "free -m" shows atleast 50MB free most of the time. I have a 256MB VPS. I have 3 lsphp vhosts and this is the only rails vhost. From the above error, do you think there is something else I could adjust or is this a problem with the app itself? (though it worked fine a few days ago).

*UPDATE* I just did another test and stuck a generic rails app in there and RailsRunner ran it just fine. So I assume its a memory allocation issue or issue with the other app itself (which is just the collaboa bug tracking / source viewing rails app). If the above error gives you any clues let me know. Currently I have the rails softmem limit at 80M and the hardlimit at 120M set in the httpd_config.xml.

[malffred]

After playing around with the values a bit more I seemed to have fixed it. I just needed to allocate more memory to the rails part of it (I thought 80M would be more than enough, but I guess this app prefetched all the SVN versioning info?). Thanks!

[fantasydreaming]

What do you mean by "prefetched SVN versioning info"?

I have a fairly large rails project, but I've been struggling with memory usage in the last while - each process shows nearly 200 megs of VSIZ, and 110 megs of RSS. They start around 94/44, but grow from there. Some requests load a thousand small objects, but it shouldn't be growing that much. I just wondered if your mention might be the clue to my problems too!