Re: [EsiGate-devel] Thread locked under load

[Alexis T. <ale...@sm...>]

http://java.dzone.com/articles/concurrency-and-hashmap

Le 21/03/2012 15:08, Alexis Thaveau a écrit :
> 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, François-Xavier Bonnet a écrit :
>> This is a real problem but do you think it can explain the 100% CPU ?
>> Shouldn't we have some ConcurrentModificationException ?
>> Cordialement,
>>
>> François-Xavier Bonnet
>> Responsable de production
>> Smile - Open Source Solutions
>> www.smile.fr
>> Tél : +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 écrit :
>>> 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 écrit :
>>>> 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
>>> Tél :  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
> Tél :  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
Tél :  02 40 08 68 10
Mailto : ale...@sm...