[Bug 938669] Re: Can not increase MaxClients in cups (Max clients reached, holding new connections...)

[panticz.de]

** Package changed: cups (Ubuntu) => upstart (Ubuntu)

** Also affects: upstart
   Importance: Undecided
       Status: New

** Also affects: cups
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/938669

Title:
  Can not increase MaxClients in cups (Max clients reached, holding new
  connections...)

Status in CUPS - Common Unix Printing System:
  New
Status in Upstart:
  New
Status in “upstart” package in Ubuntu:
  New

Bug description:
  I run a terminalserver under Ubuntu 11.10 (oneiric) and CUPS
  1.5.0-8ubuntu6. Unfortunately i get "Max clients reached, holding new
  connections..." error.

  I try to increase the MaxClients value to 8192 in /etc/cups/cupsd.conf
  (and LogLevel to debug) but CUPS reduces this to 1/3 of file
  descriptor limit from the system with is by default 1024:

  /var/log/cups/error_log 
  I [22/Feb/2012:12:02:37 +0100] Using default TempDir of /var/spool/cups/tmp...
  I [22/Feb/2012:12:02:37 +0100] MaxClients limited to 1/3 (341) of the file descriptor limit (1024)...
  I [22/Feb/2012:12:02:37 +0100] Configured for up to 341 clients.

  Also i try to set higher file descriptor limit in /etc/security/limits.conf
  root hard nofile 64000
  root soft nofile 64000

  and also add "session required pam_limits.so" to /etc/pam.d/common-
  session but CUPS set still MaxClients to 341.

  Ulimit seams to works fine:
  root at ts:~# ulimit -n
  64000

  Before i upgrade to Oneiric i have same configuration on Ubuntu 10.04
  Lucid and CUPS 1.4.3-1ubuntu1 with works fine.

  This seams to by a similar bug to:
  https://bugzilla.redhat.com/show_bug.cgi?id=446023

  Lets me know if you need some more information.

  BR Pawel

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