Re: ps -aux hangs on [nfsd]

[Olaf Kirch <okir@suse.de>]

On Thu, Jan 27, 2005 at 11:57:04AM +0100, Frank Steiner wrote:
> Here are the relevant portions of the strace log, maybe someone
> has an idea what could go wrong here.

This doesn't look like an NFS bug; it's a problem in procps or glibc.

When you do a ps aux, ps ends up in a function named simple_readtask
(in procps/proc/readproc.c) which does this:

	stat /proc/<pid>
	read /proc/<pid>/stat
	read /proc/<pid>/status
	map the uids it found to login names

The latter happens via a function named user_from_uid(), which caches
these mappings - this is the reason why you're not seeing an access to
/etc/passwd on every call.

But it doesn't look like user_from_uid() could loop at all. So
possibly somethings wrong inside glibc (unlikely as that is).

Olaf
-- 
Olaf Kirch     | Things that make Monday morning interesting, #2:
okir@suse.de   |        "We have 8,000 NFS mount points, why do we keep
---------------+ 	 running out of privileged ports?"


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