Re: [EsiGate-devel] Thread locked under load

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

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
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> 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
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>>
>> -- 
>> Alexis Thaveau
>> Agence Nantes
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-- 
Alexis Thaveau
Agence Nantes
Smile - Open Source Solutions
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