Change in vdsm[ovirt-3.3]: threadPool: Do not keep reference to tasks

2013-12-11 Thread ybronhei
Yaniv Bronhaim has submitted this change and it was merged.

Change subject: threadPool: Do not keep reference to tasks
..


threadPool: Do not keep reference to tasks

Worker thread was taking a task from the threadpool queue, run it, and
then hold it until the next task is run. This causes the task and all
objects referenced from it to keep living until the next task is run by
this thread.

This patch ensure that worker thread does not keep referece to tasks
after they were run.

Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Relates-To: https://bugzilla.redhat.com/1032925
Signed-off-by: Nir Soffer nsof...@redhat.com
Reviewed-on: http://gerrit.ovirt.org/22136
Reviewed-by: Ayal Baron aba...@redhat.com
Reviewed-by: Allon Mureinik amure...@redhat.com
Reviewed-on: http://gerrit.ovirt.org/22208
Reviewed-by: Yaniv Bronhaim ybron...@redhat.com
Tested-by: Yaniv Bronhaim ybron...@redhat.com
---
M vdsm/storage/threadPool.py
1 file changed, 6 insertions(+), 1 deletion(-)

Approvals:
  Yaniv Bronhaim: Verified; Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Gerrit-PatchSet: 3
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Allon Mureinik amure...@redhat.com
Gerrit-Reviewer: Ayal Baron aba...@redhat.com
Gerrit-Reviewer: Federico Simoncelli fsimo...@redhat.com
Gerrit-Reviewer: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Saggi Mizrahi smizr...@redhat.com
Gerrit-Reviewer: Yaniv Bronhaim ybron...@redhat.com
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Change in vdsm[ovirt-3.3]: threadPool: Do not keep reference to tasks

2013-12-11 Thread ybronhei
Yaniv Bronhaim has posted comments on this change.

Change subject: threadPool: Do not keep reference to tasks
..


Patch Set 2: Verified+1 Code-Review+2

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Gerrit-MessageType: comment
Gerrit-Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Gerrit-PatchSet: 2
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Allon Mureinik amure...@redhat.com
Gerrit-Reviewer: Ayal Baron aba...@redhat.com
Gerrit-Reviewer: Federico Simoncelli fsimo...@redhat.com
Gerrit-Reviewer: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Saggi Mizrahi smizr...@redhat.com
Gerrit-Reviewer: Yaniv Bronhaim ybron...@redhat.com
Gerrit-HasComments: No
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Change in vdsm[ovirt-3.3]: threadPool: Do not keep reference to tasks

2013-12-10 Thread nsoffer
Nir Soffer has posted comments on this change.

Change subject: threadPool: Do not keep reference to tasks
..


Patch Set 1: Verified+1

Verified by creating a vm and making few templates.

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Gerrit-MessageType: comment
Gerrit-Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Allon Mureinik amure...@redhat.com
Gerrit-Reviewer: Ayal Baron aba...@redhat.com
Gerrit-Reviewer: Federico Simoncelli fsimo...@redhat.com
Gerrit-Reviewer: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Saggi Mizrahi smizr...@redhat.com
Gerrit-Reviewer: Yaniv Bronhaim ybron...@redhat.com
Gerrit-HasComments: No
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Change in vdsm[ovirt-3.3]: threadPool: Do not keep reference to tasks

2013-12-09 Thread nsoffer
Hello Ayal Baron, Allon Mureinik,

I'd like you to do a code review.  Please visit

http://gerrit.ovirt.org/22208

to review the following change.

Change subject: threadPool: Do not keep reference to tasks
..

threadPool: Do not keep reference to tasks

Worker thread was taking a task from the threadpool queue, run it, and
then hold it until the next task is run. This causes the task and all
objects referenced from it to keep living until the next task is run by
this thread.

This patch ensure that worker thread does not keep referece to tasks
after they were run.

Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Relates-To: https://bugzilla.redhat.com/1032925
Signed-off-by: Nir Soffer nsof...@redhat.com
Reviewed-on: http://gerrit.ovirt.org/22136
Reviewed-by: Ayal Baron aba...@redhat.com
Reviewed-by: Allon Mureinik amure...@redhat.com
---
M vdsm/storage/threadPool.py
1 file changed, 6 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/08/22208/1

diff --git a/vdsm/storage/threadPool.py b/vdsm/storage/threadPool.py
index b1f3142..a0e24a2 100644
--- a/vdsm/storage/threadPool.py
+++ b/vdsm/storage/threadPool.py
@@ -191,8 +191,8 @@
 it, calling the callback if any.  
 
 while not self.__isDying:
+id, cmd, args, callback = self.__pool.getNextTask()
 try:
-id, cmd, args, callback = self.__pool.getNextTask()
 if id is None:  # should retry.
 pass
 elif self.__isDying:
@@ -212,6 +212,11 @@
 self.__pool.setRunningTask(False)
 except Exception:
 self.log.error(Task %s failed % repr(cmd), exc_info=True)
+finally:
+# Don't keep reference to objects taken from the pool.
+# Otherwise this thread may keep those object alive until the
+# next iteration. See BZ#1032925.
+del id, cmd, args, callback
 
 def goAway(self):
 


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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Allon Mureinik amure...@redhat.com
Gerrit-Reviewer: Ayal Baron aba...@redhat.com
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Change in vdsm[ovirt-3.3]: threadPool: Do not keep reference to tasks

2013-12-09 Thread ybronhei
Yaniv Bronhaim has posted comments on this change.

Change subject: threadPool: Do not keep reference to tasks
..


Patch Set 1: Code-Review+2

verified?

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Gerrit-MessageType: comment
Gerrit-Change-Id: Ib6e024e0727e11a4c98f4e5ede20229d148fdc58
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer nsof...@redhat.com
Gerrit-Reviewer: Allon Mureinik amure...@redhat.com
Gerrit-Reviewer: Ayal Baron aba...@redhat.com
Gerrit-Reviewer: Federico Simoncelli fsimo...@redhat.com
Gerrit-Reviewer: Saggi Mizrahi smizr...@redhat.com
Gerrit-Reviewer: Yaniv Bronhaim ybron...@redhat.com
Gerrit-HasComments: No
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