Too many open files
David Aldrich
Hi
Since updating some plugins we are getting lots of “Too many open files” warnings. Here’s an example:
Apr 12, 2017 9:38:35 PM WARNING org.eclipse.jetty.util.log.JavaUtilLog warn
java.io.IOException: Too many open files
at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:241)
at org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:377)
at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:500)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
I know that there is a File Leak Detector plugin but such investigation seems quite involved.
On the master, we have:
$ ulimit -a
<snip>
open files (-n) 1024
Should 1024 be sufficient? Do I need to worry about limits on the slaves?
Any other suggestions please? I don’t know why these warnings have suddenly appeared.
Best regards
David
Victor Martinez
# ulimit -a
....
open files (-n) 65536
....
Cheers
Baptiste Mathus
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David Aldrich
Hi Victor
Thanks for your answer – I will try increasing the limits as they suggest.
Best regards
David
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David Aldrich
Yes, I agree. But I can’t practically roll back each upgraded plugin on the production server easily. I’ll try increasing the limits first.
From: bma...@gmail.com [mailto:bma...@gmail.com]
On Behalf Of Baptiste Mathus
Sent: 13 April 2017 09:38
To: jenkins...@googlegroups.com
Cc: David Aldrich <David....@EMEA.NEC.COM>
Subject: Re: Too many open files
Also, this could be a bug. So, you need to clarify which "some plugins" you upgraded. Because if all was fine until now, then there may be some bug somewhere. Or maybe not if you were already close to the ulimit max without knowing it for some time. But impossible to tell from here.
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Baptiste Mathus
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David Aldrich
Ok, the plugins I upgraded were:
bouncycastle API 2.16.0 > 2.16.1
Git client 2.4.0 > 2.4.1
Support core 2.39 > 2.40
Token macro 2.0 > 2.1
SCM API 1.3 > 2.1.1
Subversion 2.7.1 > 2.7.2
Email Extension 2.57.1 > 2.57.2
Matrix Authorisation Strategy 1.4 > 1.5
Static Analysis Utilities 1.84 > 1.86
Warnings 4.60 > 4.62
I also installed Blue Ocean 1.0.0
Best regards
David
From: bma...@gmail.com [mailto:bma...@gmail.com]
On Behalf Of Baptiste Mathus
Sent: 13 April 2017 13:37
To: jenkins...@googlegroups.com
Subject: Re: Too many open files
If you can at least post here the list of upgraded plugins, it could serve as a reference if this issue is encountered by any other. Thanks!
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