# System call timeout problem **URL:** \ **Category:** Rails\ **Created:** [February 10, 2007, 8:41pm UTC](https://www.ruby-forum.com/t/system-call-timeout-problem/85165 "2007-02-10T20:41:46Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![migo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/f14d63/32.png) [@migo](https://www.ruby-forum.com/u/migo)\ **Post date:** [February 10, 2007, 8:41pm UTC](https://www.ruby-forum.com/t/system-call-timeout-problem/85165/1 "2007-02-10T20:41:46Z")
Hallo, I upgraded from rails 1.1.x to rails 1.2.x und the following error now occours. I do a system call, that transfers a file via lftp: `lftp -f #{dir}script` Which just executes lftp with a script file as a parameter. This works fine and the file transfer is executed correctly, but I now get after about 2000ms the following errors im my application: In the Browser: the standard “rails application failed” error In the error logs: SystemExit (exit): /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:116:in `exit' /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:116:in`exit\_now\_handler’ /var/lib/gems/1.8/gems/activesupport-1.4.0/lib/active\_support/ inflector.rb:251:in `to_proc' /var/lib/gems/1.8/gems/activesupport-1.4.0/lib/active_support/ core_ext/kernel/agnostics.rb:7:in`call’ /var/lib/gems/1.8/gems/activesupport-1.4.0/lib/active\_support/ core\_ext/kernel/agnostics.rb:7:in `' /var/lib/gems/1.8/gems/activesupport-1.4.0/lib/active_support/ core_ext/kernel/agnostics.rb:7:in`’ /app/models/quikftp.rb:86:in `copyFile' /app/controllers/quikftp_controller.rb:106:in`copyFile’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ base.rb:1095:in `send' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ base.rb:1095:in`perform\_action\_without\_filters’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ filters.rb:632:in `call_filter' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ filters.rb:638:in`call\_filter’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ filters.rb:438:in `call' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ filters.rb:637:in`call\_filter’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ filters.rb:619:in `perform_action_without_benchmark' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ benchmarking.rb:66:in`perform\_action\_without\_rescue’ /usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ benchmarking.rb:66:in`perform\_action\_without\_rescue’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ rescue.rb:83:in `perform_action' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ base.rb:430:in`send’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ base.rb:430:in `process_without_filters' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ filters.rb:624:in`process\_without\_session\_management\_support’ /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action\_controller/ session\_management.rb:114:in `process' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ base.rb:330:in`process’ /var/lib/gems/1.8/gems/rails-1.2.1/lib/dispatcher.rb:41:in `dispatch' /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:168:in`process\_request’ /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:143:in `process_each_request!' /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:109:in`with\_signal\_handler’ /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:142:in `process_each_request!' /usr/lib/ruby/1.8/fcgi.rb:612:in`each\_cgi’ /usr/lib/ruby/1.8/fcgi.rb:609:in `each' /usr/lib/ruby/1.8/fcgi.rb:609:in`each\_cgi’ /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:141:in `process_each_request!' /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:55:in`process!’ /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:25:in `process!’ /home/arne/www/mpaiplus.com/http/back/public/dispatch.fcgi:24 Does anybody have an idia what this is about? Any help is strongly appreciated. migo ---
**Author:** ![migo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/f14d63/32.png) [@migo](https://www.ruby-forum.com/u/migo)\ **Post date:** [February 11, 2007, 5:18am UTC](https://www.ruby-forum.com/t/system-call-timeout-problem/85165/2 "2007-02-11T05:18:26Z")
On 2/11/07, migo [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > inflector.rb:251:in `to_proc' /var/lib/gems/1.8/gems/actionpack-1.13.1/lib/action_controller/ filters.rb:619:in `perform\_action\_without\_benchmark’ > base.rb:430:in `process_without_filters' /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:143:in /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi_handler.rb:55:in `process!’ > /var/lib/gems/1.8/gems/rails-1.2.1/lib/fcgi\_handler.rb:25:in > `process!’ > /home/arne/www/mpaiplus.com/http/back/public/dispatch.fcgi:24 > > Does anybody have an idia what this is about? > Any help is strongly appreciated. Its extremely _insert your favorite profanity here_ to do that. Rails work on the assumption that all your actions return/render fast and do not block. What your probably want is to offload this ftp thingy to a background process. Most likely backgroundrb is suited for this kinda stuff. there is a seperate mailing list for backgroundrb, shoot a mail if you can’t figure this out. ## – gnufied There was only one Road; that it was like a great river: its springs were at every doorstep, and every path was its tributary. ---
**Author:** ![migo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/f14d63/32.png) [@migo](https://www.ruby-forum.com/u/migo)\ **Post date:** [February 11, 2007, 1:01pm UTC](https://www.ruby-forum.com/t/system-call-timeout-problem/85165/3 "2007-02-11T13:01:10Z")
Thanks for the advice! the ftp transfer is actually called as an ajax function, so the application itself doesnt block (other ajax call check the progress on the ftp transfer). I will have a look at the backgroundrb stuff.