Message 154567 - Python tracker

Message154567

Author	Marc.Abramowitz
Recipients	Garen, Marc.Abramowitz, belopolsky, benjamin.peterson, danchr, dhduvall, dmalcolm, eric.snow, fche, glyph, hazmat, jbaker, jcea, jmcp, laca, lasizoillo, loewis, mjw, movement, neologix, pitrou, pjenvey, rhettinger, robert.kern, ronaldoussoren, scox, serverhorror, sirg3, techtonik, twleung, wsanchez
Date	2012-02-28.19:33:43
SpamBayes Score	1.3384532e-07
Marked as misclassified	No
Message-id	<1330457624.45.0.563825244583.issue13405@psf.upfronthosting.co.za>
In-reply-to

Content
[marca@freebsd9-0 ~]$ /home/marca/custom/bin/python Python 2.7.2+ (dtrace-issue13405_2.7:e612f29478e3+, Feb 27 2012, 20:37:22) [GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9 Type "help", "copyright", "credits" or "license" for more information. >>> [marca@freebsd9-0 ~]$ sudo dtrace -n 'pid$target:python::entry' -c /home/marca/custom/bin/python Python 2.7.2+ (dtrace-issue13405_2.7:e612f29478e3+, Feb 27 2012, 20:37:22) [GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9 Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.getpid() 2541 >>> dtrace: failed to control pid 2541: process exited with status 0 [marca@freebsd9-0 ~]$ ps auxww \| grep python marca 2546 0.0 2.3 27452 5668 1 S+ 3:29AM 0:00.02 /home/marca/custom/bin/python [marca@freebsd9-0 ~]$ sudo dtrace -n 'pid2546:python::entry' [marca@freebsd9-0 ~]$ ps auxww \| grep python marca 2552 0.0 0.5 16460 1244 0 S+ 3:29AM 0:00.00 grep python In the above case, the python proces (pid 2546) died with: >>> Killed: 9 Why would DTrace kill -9 the program it's tracing?

Content

[marca@freebsd9-0 ~]$ /home/marca/custom/bin/python
Python 2.7.2+ (dtrace-issue13405_2.7:e612f29478e3+, Feb 27 2012, 20:37:22) 
[GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9
Type "help", "copyright", "credits" or "license" for more information.
>>> 
[marca@freebsd9-0 ~]$ sudo dtrace -n 'pid$target:python::entry' -c /home/marca/custom/bin/python
Python 2.7.2+ (dtrace-issue13405_2.7:e612f29478e3+, Feb 27 2012, 20:37:22) 
[GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.getpid()
2541
>>> 
dtrace: failed to control pid 2541: process exited with status 0


[marca@freebsd9-0 ~]$ ps auxww | grep python
marca       2546   0.0  2.3  27452   5668   1  S+    3:29AM   0:00.02 /home/marca/custom/bin/python
[marca@freebsd9-0 ~]$ sudo dtrace -n 'pid2546:python::entry'
[marca@freebsd9-0 ~]$ ps auxww | grep python
marca       2552   0.0  0.5  16460   1244   0  S+    3:29AM   0:00.00 grep python

In the above case, the python proces (pid 2546) died with:

>>> Killed: 9

Why would DTrace kill -9 the program it's tracing?

History
Date	User	Action	Args
2012-02-28 19:33:44	Marc.Abramowitz	set	recipients: + Marc.Abramowitz, loewis, rhettinger, jcea, ronaldoussoren, belopolsky, pitrou, wsanchez, movement, techtonik, pjenvey, benjamin.peterson, serverhorror, glyph, laca, twleung, jbaker, robert.kern, sirg3, danchr, dhduvall, dmalcolm, mjw, Garen, neologix, lasizoillo, fche, hazmat, eric.snow, jmcp, scox
2012-02-28 19:33:44	Marc.Abramowitz	set	messageid: <1330457624.45.0.563825244583.issue13405@psf.upfronthosting.co.za>
2012-02-28 19:33:43	Marc.Abramowitz	link	issue13405 messages
2012-02-28 19:33:43	Marc.Abramowitz	create