Date: Sun, 20 May 2007 11:34:46 -0700 From: Garrett Cooper <youshi10@u.washington.edu> To: freebsd-questions@freebsd.org, freebsd-python@freebsd.org Subject: Re: kill won't kill Message-ID: <465094C6.9090602@u.washington.edu> In-Reply-To: <20070520183306.GA25051@ayn.mi.celestial.com> References: <46508D23.2040003@xs4all.nl> <20070520183306.GA25051@ayn.mi.celestial.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Bill Campbell wrote:
> On Sun, May 20, 2007, Remko Cijffers wrote:
>> Hi,
>>
>> I'm running a python script which has stopped responding. Killing off
>> the process doesn't work:
>>
>>> # ps -ax | grep nzb | grep -v grep
>>> 48426 p1 TLs 136:51.62 /usr/local/bin/python /usr/local/bin/hellanzb.py
>>> # kill -SIGKILL 48426
>>> # ps -ax | grep nzb | grep -v grep
>>> 48426 p1 TLs 136:51.62 /usr/local/bin/python /usr/local/bin/hellanzb.py
>> The only tip I could find seems to reference the 'wait for lock' flag
>> ('L' in ps output). A lock could come from samba but restarting the
>> daemon doesn't solve the problem.
>
> Typically unkillable processes are the result of hanging on some file or
> device that's waiting on kernel services which never return.
>
> Using ``lsof -p pid'' to see that the process is using at may give a hint
> as to what it's hanging on.
>
> On Linux systems I frequently use ``strace -p pid'' to see what a process
> is doing. I don't know the FreeBSD equivalent of strace.
>
> Bill
> --
> INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software LLC
> URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way
> FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676
>
> ``We maintain that the very foundation of our way of life is what we call
> free enterprise,'' said Cash McCall, "but when one of our citizens
> show enough free enterprise to pile up a little of that profit, we do
> our best to make him feel that he ought to be ashamed of himself."
> -- Cameron Hawley
That would be truss(1).
strace is also in ports if you prefer to use it.
-Garrett
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?465094C6.9090602>