[SSI-devel] [ ssic-linux-Bugs-2782858 ] thread group fails to migrate
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From: SourceForge.net <no...@so...> - 2009-05-06 05:28:56
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Bugs item #2782858, was opened at 2009-04-28 09:39 Message generated for change (Comment added) made by rogertsang You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=405834&aid=2782858&group_id=32541 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Process Management Group: v1.9.1 Status: Open Resolution: Accepted Priority: 5 Private: No Submitted By: Roger Tsang (rogertsang) Assigned to: Roger Tsang (rogertsang) Summary: thread group fails to migrate Initial Comment: [created from discussion http://article.gmane.org/gmane.linux.cluster.ssic.devel/6010] When running the attached test program the origin node displays the following messages: add_thread_group:Cannot move process 438181 (calc) - cannot find all shares add_thread_group: group(438181)/share imbalance 4/1 To build attached test program # gcc -o calc pthread-test.c -pthread -lm ---------------------------------------------------------------------- >Comment By: Roger Tsang (rogertsang) Date: 2009-05-06 01:28 Message: apply patch against CVS ---------------------------------------------------------------------- Comment By: Roger Tsang (rogertsang) Date: 2009-05-01 21:10 Message: now looking good; will CVS checkin my fixes soon ---------------------------------------------------------------------- Comment By: Roger Tsang (rogertsang) Date: 2009-04-29 23:50 Message: ran into other bugs while fixing this... 1) fails to migrate due to shared SysV sem 2) sending signal after migration results in zombie thread group when the parent of the test program reside on a different node ---------------------------------------------------------------------- Comment By: Roger Tsang (rogertsang) Date: 2009-04-28 09:42 Message: from discussion http://article.gmane.org/gmane.linux.cluster.ssic.devel/6011 John Huges wrote: I've also seen another error when trying to migrate the process: $ migrate 1 395359 migrate: process 395359 has exited/is exiting $ dmesg | tail -1 add_thread_group:Cannot move process 394990 (gdm) has different tgid 394990 (expected 395359) It seems confused about which threads belong to which processes. I get the same behaviours with a 2.6.11 kernel based on CVS as of 16 March. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=405834&aid=2782858&group_id=32541 |