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Bug 313707

Summary:	Hudson slave.jar consuming ~110% CPU
Product:	Community	Reporter:	Denis Roy <denis.roy>
Component:	CI-Jenkins	Assignee:	CI Admin Inbox <ci.admin-inbox>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	d_a_carver
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:
Bug Depends on:	315643
Bug Blocks:

Description Denis Roy

2010-05-20 08:25:09 EDT

It seems that slave.jar likes to consume from 100% to 125% of one CPU at all times.  For a machine with 8 cores, this means one of them is always tied up.

Is there any way of tracing what it's doing?  strace doesn't show me anything.

Comment 1 David Carver

2010-05-20 09:24:53 EDT

Could use the following to check slave status:

http://wiki.hudson-ci.org/display/HUDSON/slave-status

Also, the following issue might be of interest:

http://issues.hudson-ci.org/browse/HUDSON-4512

In addition, you can report a bug to the hudson devs at:

http://issues.hudson-ci.org/

Comment 2 David Carver

2010-05-20 09:34:42 EDT

You can also get a threadDump from build2 if you are logged into the Hudson UI.

https://build.eclipse.org/hudson/computer/build2/threadDump

Comment 3 Denis Roy

2010-06-07 09:54:49 EDT

Since starting it with jnlp this is no longer the case.