OK now I think I can answer most of my own questions. The best resource on explain ulimit I found from 1 hour google search: http://answers.google.com/answers/threadview?id=311442
This article provided overview and PAM integration with ulimits http://www.seifried.org/security/index.php/Linux_Limiting_and_Monitoring_Users To control virtual memory size limit (one of the most practical limit), PAM cannot do it. use ulimit package and edit /etc/sysconfig/ulimit to control it. On Tue, 2007-06-12 at 09:18 +0800, Zhang Weiwu wrote: > Dear list > > I am in the process of learning to manage ulimits. I feel I must have > hit some limits in one of my boxes but as I am googling around most > information about ulimits are very very brief. It's explained how to set > soft or hard limits but not mentioned what's the current status. e.g. I > know from RTFM that ulimit -n can control the maximum number of open > file descriptors, but how do I know the exact number of open file > descriptors on my system? Also -m control the maximum resident set size, > well I yet didn't find a very clear explanation of resident set size, is > it what shows up when I use 'free' or 'top'? And there is no 'resident > set size' in /proc/meminfo too. > > Most google results explain ulimits in less then 3 pages but I guess to > get enough background knowledge of it I need at least a article much > longer than that. > > Now I am still googling around and would very appreciate if someone can > recommend me some good article to read. Thanks a lot in advance! > > -- > Zhang Weiwu > Real Softservice > http://www.realss.com > +86 592 2091112 > -- Zhang Weiwu Real Softservice http://www.realss.com +86 592 2091112 -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
