Bug 585212

Summary:	Recent updates to the collector caused a memory leak.
Product:	Red Hat Enterprise MRG	Reporter:	Timothy St. Clair <tstclair>
Component:	condor	Assignee:	Timothy St. Clair <tstclair>
Status:	CLOSED ERRATA	QA Contact:	Luigi Toscano <ltoscano>
Severity:	high	Docs Contact:
Priority:	high
Version:	Development	CC:	ltoscano, matt, tao
Target Milestone:	1.3
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-10-20 11:30:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Timothy St. Clair 2010-04-23 12:50:13 UTC

Description of problem:
Memory leak in the collector on invalidate ads. 

Version-Release number of selected component (if applicable):
7.4.3-0.10

How reproducible:
100%

Steps to Reproduce:
1. Have a large pool with dynamic slots 
2. run a lot of jobs
3. watch memory usage of collector
  
Actual results:
steady increase in memory usage.

Expected results:
should stay constant.  

Additional info:

Comment 1 Timothy St. Clair 2010-04-23 12:50:56 UTC

Classad deletion.

Fixed in 7.4.3-0.11

Comment 4 Luigi Toscano 2010-07-23 15:51:22 UTC

How to quickly reproduce:
- configure a cluster of at least two condor instances (1 Central Manager, >=1 Execute nodes)
- enable Dynamic Slots on both (one big slot for each machine)
- increase the number of "generated" slots with NUM_CPUS (at least 32)
- submit a huge number of simple jobs (for example, a job description files which queues 15000 instances of "uname -a", each jdf submitted every 30 minutes)
- watch memory (RSS) used by collector on CM

With a simple cluster of two machines, RSS memory used by collector/7.4.3-0.10, increases quickly (in one or two hours), while it stays constants with condor-7.4.4-0.4 after one week of  uninterrupted job processing.

Verified on RHEL5.5, i386/x86_64.