[ https://issues.apache.org/activemq/browse/SM-512?page=all ]

Guillaume Nodet closed SM-512.
------------------------------

    Resolution: Won't Fix
      Assignee: Guillaume Nodet

I'm closing this issue as there is no real bug we can fix here.
I've raised SM-521 to ease tuning configuration

> sendsync from a service to another service seems to cause a deadlock under 
> load
> -------------------------------------------------------------------------------
>
>                 Key: SM-512
>                 URL: https://issues.apache.org/activemq/browse/SM-512
>             Project: ServiceMix
>          Issue Type: Bug
>    Affects Versions: 3.0-M2
>         Environment: Windows 2003, Intel 2.8 xeon processor. Java 1.5 3.0-M2
>            Reporter: anand somani
>         Assigned To: Guillaume Nodet
>             Fix For: 3.0-M3
>
>         Attachments: test.zip
>
>
> We have 2 services A and B. A makes sync requests to B. We have a JMS client 
> that feeds requests to A and that triggers a sync request to B. We are trying 
> to push some 5000 requests (not sequential). Now
>      With st flow - A gets all the responses from B and we are good
>      with Seda flow -  A gets some responses from B (sometimes none) and then 
> all the threads are blocked (seen using JMX) on syncsend(), looks like B has 
> no threads to service requests.
>      with JMS flow ( A and B on different VMs), we see the similar behavior 
> as with seda flow
> With async requests everything works just fine. We have tried increasing seda 
> capacity and workmanager thread count, that did not help.  I am attaching 
> service A and B code along with configuration files
> Also it would be nice to have all the tunable features documented with some 
> explaination somewhere ( I could not find it anywhere)

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