This is probably something any SA should know... but I don't! On CentOS 5 I can see what a process's current soft and hard limits are; /proc/<pid>/limits However this isn't in the C4 kernel. Is there any easy way of determining what the process rlimit values are? % uname -a ; cat /etc/redhat-release Linux c4 2.6.20.7 #3 Sun May 2 16:30:15 EDT 2010 i686 i686 i386 GNU/Linux CentOS release 4.8 (Final) (yes, I know this machine should be updated, but...) -- rgds Stephen