Hi,
In solaris I remember this direcotry structure
/proc/<pid>/fd
in this directory
ls -l | wc -l
would give me the number of file descriptor for that process.
Where can I find the similar in HPUX
HPUX has nothing like it.
The closest you might get is the various information ps can offer, which turns out to be quite a bit.
Are you looking for open files by the process? "lsof" is available for HP-UX as well.
lsof -c process_name
And you can drill down on a process with HP-UX glance and see which files that process has open.
Very important when configuring kernel parameters to know how many files a database client actually opens (it can be a large number).
@Corona688
"HPUX has nothing like it."
Sorry, but that is a rubbish post.
Also there is no "ps" option for file descriptors on any unix/Linux Operating System.
I need the number of file descriptor a process has opened and the max limit that is set on my system.
Can you help me with the exact command ?
Yes, with lsof it's very easy.
To check numbers of file descriptors opened by a process:
lsof -p PID | awk '$4~/^[0-9]/' | wc -l
To check the max. limit that's set, on ksh type this:
ulimit -n
1 Like
Check out these kernel parameters.
# kctune maxfiles maxfiles_lim
Tunable Value Expression Changes
maxfiles 2048 Default
maxfiles_lim 4096 Default Immed
# ulimit -a | grep nofiles
nofiles(descriptors) 2048
This will set it system wide, and with ulimit command you can change per user inside .profile, but not above the kernel parameter maxfiles_lim.
Hope that helps.
Regards
Peasant.
Look here:
HP Communities - /proc or equivalent in HPUX - Enterprise Business Community
The kernel metrics you are looking for are PROC_OPEN, THREAD_OPEN... by what I remember and apeared in HP-UX 11.00...
Addendum : (they may be glance specific - they are counts of open(2) system calls.)
Oh? What virtual filesystem resembling /proc/ does HPUX have, then?
Anything?
The kernel tables used by glance , top , ps , lsof and more.
It's an anomaly of Solaris and some Linux that these tables are visible to ls .
HP-UX ps does not list Open Files.
So, no virtual filesystem resembling /proc/, then.
Unfortunately, there's no HP-UX equivalent of Linux's /proc filesystem. Linux has gone beyond just listing different process related stuffs in /proc which is quite hard to find in HP-UX without custom C programs using some kind of pstat(2) functions.
Work around is to use ps, pfiles, pmap, ptree, etc commands which can give various details of a process.