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Re: [EsiGate-devel] Webassembletool-devel Digest, Vol 2, Issue 4
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From: Nicolas R. <nic...@gm...> - 2012-03-21 15:13:06
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Sure, I'm sending this to Stephane (watstf) so he can make the fix and send the pached package to performance environment. Stéphane, be sure to register to -devel list so you can reply directly :-) Nicolas > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 21 Mar 2012 15:23:58 +0100 > From: Fran?ois-Xavier Bonnet <fra...@ce...> > Subject: Re: [EsiGate-devel] Thread locked under load > To: web...@li... > Message-ID: <4F6...@ce...> > Content-Type: text/plain; charset="iso-8859-1" > > OK, so we should wrap the TreeSet and HashMap used in Output class using > Collections.synchronizedSortedSet(...) and Collections.synchronizedMap(...) > Nicolas, can you check that it fixes the problem ? > > Le 21/03/2012 15:10, Alexis Thaveau a ?crit : >> http://java.dzone.com/articles/concurrency-and-hashmap >> >> Le 21/03/2012 15:08, Alexis Thaveau a ?crit : >>> The main bug is that headers.put is called by several threads at same >>> time. As you said, thread are still runnable, i think map is broken, >>> and result is a kind of infinite loop. >>> >>> >>> >>> >>> >>> Le 21/03/2012 14:53, Fran?ois-Xavier Bonnet a ?crit : >>>> This is a real problem but do you think it can explain the 100% CPU ? >>>> Shouldn't we have some ConcurrentModificationException ? >>>> Cordialement, >>>> >>>> Fran?ois-Xavier Bonnet >>>> Responsable de production >>>> Smile - Open Source Solutions >>>> www.smile.fr >>>> T?l : +33 1 41 40 59 28 >>>> Fax : +33 1 47 30 25 61 >>>> GSM : +33 6 17 45 19 08 >>>> >>>> Le 21/03/2012 11:52, Alexis Thaveau a ?crit : >>>>> Hi, >>>>> >>>>> Implementation of TreeSet is not synchronized => not thread safe. >>>>> http://docs.oracle.com/javase/6/docs/api/java/util/TreeSet.html >>>>> TreeSet must be wrapped with Collections.synchronizedSortedSet || >>>>> <http://docs.oracle.com/javase/6/docs/api/java/util/Collections.html#synchronizedSortedSet%28java.util.SortedSet%29> >>>>> >>>>> >>>>> Le 21/03/2012 11:44, Nicolas Richeton a ?crit : >>>>>> Hi all >>>>>> >>>>>> We have an issue with with ESIGate 2.19 under load, resulting to 100% cpu usage and lock. >>>>>> >>>>>> Please have a look to : >>>>>> http://sourceforge.net/apps/mantisbt/webassembletool/view.php?id=84 >>>>>> >>>>>> We have the setup show the issue, but not easy to test. Problem arises after several hours. >>>>>> >>>>>> This seems to be linked to the new cache system because older versions of ESIGate did not show any locking under heavy load. >>>>>> >>>>>> Andreii : any idea/comments on this issue ? >>>>>> >>>>>> Nicolas >>>>>> ------------------------------------------------------------------------------ >>>>>> This SF email is sponsosred by: >>>>>> Try Windows Azure free for 90 days Click Here >>>>>> http://p.sf.net/sfu/sfd2d-msazure >>>>>> _______________________________________________ >>>>>> Webassembletool-devel mailing list >>>>>> Web...@li... >>>>>> https://lists.sourceforge.net/lists/listinfo/webassembletool-devel >>>>> >>>>> >>>>> -- >>>>> Alexis Thaveau >>>>> Agence Nantes >>>>> Smile - Open Source Solutions >>>>> http://www.smile.fr >>>>> T?l : 02 40 08 68 10 >>>>> Mailto :ale...@sm... >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> This SF email is sponsosred by: >>>>> Try Windows Azure free for 90 days Click Here >>>>> http://p.sf.net/sfu/sfd2d-msazure >>>>> >>>>> >>>>> _______________________________________________ >>>>> Webassembletool-devel mailing list >>>>> Web...@li... >>>>> https://lists.sourceforge.net/lists/listinfo/webassembletool-devel >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> This SF email is sponsosred by: >>>> Try Windows Azure free for 90 days Click Here >>>> http://p.sf.net/sfu/sfd2d-msazure >>>> >>>> >>>> _______________________________________________ >>>> Webassembletool-devel mailing list >>>> Web...@li... >>>> https://lists.sourceforge.net/lists/listinfo/webassembletool-devel >>> >>> >>> -- >>> Alexis Thaveau >>> Agence Nantes >>> Smile - Open Source Solutions >>> http://www.smile.fr >>> T?l : 02 40 08 68 10 >>> Mailto :ale...@sm... >>> >>> >>> ------------------------------------------------------------------------------ >>> This SF email is sponsosred by: >>> Try Windows Azure free for 90 days Click Here >>> http://p.sf.net/sfu/sfd2d-msazure >>> >>> >>> _______________________________________________ >>> Webassembletool-devel mailing list >>> Web...@li... >>> https://lists.sourceforge.net/lists/listinfo/webassembletool-devel >> >> >> -- >> Alexis Thaveau >> Agence Nantes >> Smile - Open Source Solutions >> http://www.smile.fr >> T?l : 02 40 08 68 10 >> Mailto :ale...@sm... >> >> >> ------------------------------------------------------------------------------ >> This SF email is sponsosred by: >> Try Windows Azure free for 90 days Click Here >> http://p.sf.net/sfu/sfd2d-msazure >> >> >> _______________________________________________ >> Webassembletool-devel mailing list >> Web...@li... >> https://lists.sourceforge.net/lists/listinfo/webassembletool-devel |
