I have a Linux/Debian server running: postgresql, tomcat. Sometimes, I can't access server by ssh.
When I open ssh connection with my server, I can type in my log-in id(root) and password, but when I type in my password and press enter, there's no any response.
By 'sysinfo' function, I found that when server faces on this situation, there are about 1600 processes(this value is from sysinfo.procs), and load average is almost 300(in usual case, load average is between 0 and 1)
What I'm trying to is, listing TOP 5 process by number of thread it creates. However I cannot find easy method. There are some way I found.
- Log NLWP value of
ps -efL, so I can know which process creates too many threads abnormally.
- When load average gets bigger and bigger, copy all of
/procs/*/statusfile to log directory, and I can know which process have biggest value of 'Threads' later.
If there's any other suggestion, please let me know. It drives me crazy because this Linux server shouldn't fail service