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From DataMover <david.pirza...@cision.com>
Subject Re: too many open files
Date Mon, 11 May 2009 06:38:45 GMT

Version is 5.2

I will check on the ram allocated to queues.
We only use queues.
Some need to be persistence a few do not need to be.

One thing that may be relevant is that the server is behind a firewall that
closes connections after a timeout of no activity. We have no control over
the firewall.

So ... the clients will close an reopen a  connection to communicate their
information every 20 seconds. Wonder if that is an issue.

We were using Mysql as the persitence store but took it out thinking that
may be the cause.
So it has been using the default store and the problem did not go away.


Thank you for your responses


rajdavies wrote:
> 
> 
> On 10 May 2009, at 21:03, DataMover wrote:
> 
>>
>> I have seems several posts on this but I have not been able to solve  
>> our
>> situation.
>>
>> We have 30 clients (producers) working with one activemq server.
>> All worked amazingly well.
>>
>> Then we tried a test with around 250 clients.
>>
>> That would get many transport errors.
>> Increasing the file limits on the os caused the system to come to a  
>> crawl
>> with no benefit.
>>
>> I am assuming the problem can be solved with multiple brokers being  
>> run.
>> One question is do they have to be on different machines, or can we  
>> have
>> multiple activemqs running on the same server, each listening on a  
>> different
>> ip?
>>
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/too-many-open-files-tp23473539p23473539.html
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
> 
> You can use multiple brokers on the same machine - but could you  
> provide a little more detail about your setup ?:
>   How much memory did you allocate for your broker?
> What version of ActiveMQ are you running ?
> Are you using Topics or Queues ?
> Do you need the Queue messages to be persistent ?
> 
> 
> 
> cheers,
> 
> Rob
> 
> Rob Davies
> http://fusesource.com
> http://rajdavies.blogspot.com/
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 

-- 
View this message in context: http://www.nabble.com/too-many-open-files-tp23473539p23477862.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.


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