WSO2 ESB Connection Time Out while Load Testing

Question

I am load testing WSO2 ESB (4.6) and get this error when the load hits about 20000 messages:

TID: [0] [ESB] [2013-08-14 11:13:04,835] WARN {org.apache.synapse.transport.passthru.SourceHandler} - Connection time out after request is read: ip:port->ip:port {org.apache.synapse.transport.passthru.SourceHandler}

It's a pretty basic test, I am sending messages from SoapUI to the echo service using 10 threads over 200 seconds.

It runs till it hits about 20,000 messages and then the connection errors come up.

I have changed the performance settings in the ESB to the optimum levels as described here http://wso2.com/library/articles/2013/01/esb-performance-65.

I have also found this problem reported on WSO2's site which describes the issue as occurring when the system is under high stress. But it gives no resolution.

I did try NIO transport instead of PTT but got the same result.

https://wso2.org/jira/browse/ESBJAVA-2015?filter=11177&jql=project%20%3D%20ESBJAVA%20AND%20resolution%20in%20(Unresolved%2C%20Fixed%2C%20%22Won't%20Fix%22%2C%20Duplicate%2C%20Incomplete%2C%20%22Cannot%20Reproduce%22%2C%20%22Not%20a%20bug%22%2C%20Invalid)%20AND%20status%20in%20(Open%2C%20%22In%20Progress%22%2C%20Reopened%2C%20Resolved%2C%20Closed%2C%20Postponed)%20AND%20text%20~%20%22Connection%20time%20out%20after%20request%20is%20read%22%20AND%20resolved%20%3E%3D%202013-01-30%20AND%20resolved%20%3C%3D%202013-07-04%20ORDER%20BY%20priority%20DESC

Can anyone please help?

Can you make your client side connection as "keep-alive and redo the test? — Ratha

jayalalk jayalalk · Accepted Answer · 2013-08-15T07:04:29

Please try increasing the max thread pool size on config files. Please do value change one at time.

<ESB_HOME>/respository/conf/synapse.properties
synapse.threads.max = xx
<ESB_HOME>/respository/conf/nhttp.properties
snd_t_max=xx
lst_t_max=xx

WSO2 ESB Connection Time Out while Load Testing

2 Answers