Re: Using Barrier with high load and got the error "Can't add waiter, no barriers" returned

Thanks much Phil for your help. I will try to configure the timeout to something else and re-compile the code. Regarding the unique id, how should I revise the code to avoid duplication?

Please help

Thiraphat

On Dec 27, 2013, at 10:15 PM, Philip Aston <[email protected]> wrote:

My guess is that the console process is incorrectly determining that the
worker process is dead and cancelling its barriers. The console relies
on regular "heartbeat" messages from each worker process. It is possible
that a lengthy GC or busy network might have delayed this. The console
will consider any worker that has failed to report for 2 seconds to be
dead. Unfortunately, this isn't configurable, so you'll have to
recompile the code to change it. Look at
net.grinder.console.communication.ProcessStatusImplementation.FLUSH_PERIOD.
I've opened bug #244 to improve this in the future.

Also, I see that your unique ID generator isn't working. In your log
output, I see the same ID being repeatedly used. I'm guessing that the
whole reason you want to use a barrier is for cross-process
synchronisation. This implies that you want to use a well known name,
not a generated one.

- Phil

> On 17/12/13 12:39, Thiraphat wrote:
> The full error returned from a console.
> 
> -----
> 
> 
> D:\Distribution\AC>PATH=C:\Program Files\Java\jre6\bin;C:\Program
> Files\OpenSSH\
> bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program
> Files\IBM
> \Director\bin;C:\Program Files\Common
> Files\IBM\ICC\cimom\bin;C:\WINDOWS\system3
> 2\WindowsPowerShell\v1.0;D:\QueryTesting\TclClient
> 
> D:\Distribution\AC>java -cp D:\Grinder\grinder-3.6\lib\grinder.jar;
> net.grinder.
> Console
> Exception in thread "main" java.lang.IllegalStateException: Can't add
> waiter, no
> barriers
>        at
> net.grinder.synchronisation.AbstractBarrierGroups$BarrierGroupImpleme
> ntation.addWaiter(AbstractBarrierGroups.java:217)
>        at
> net.grinder.console.synchronisation.ProcessBarrierGroups$1.addWaiter(
> ProcessBarrierGroups.java:87)
>        at
> net.grinder.console.synchronisation.WireDistributedBarriers$3.handle(
> WireDistributedBarriers.java:100)
>        at
> net.grinder.console.synchronisation.WireDistributedBarriers$3.handle(
> WireDistributedBarriers.java:96)
>        at
> net.grinder.communication.MessageDispatchSender.send(MessageDispatchS
> ender.java:116)
>        at
> net.grinder.console.communication.ConsoleCommunicationImplementation.
> processOneMessage(ConsoleCommunicationImplementation.java:267)
>        at
> net.grinder.console.ConsoleFoundation.run(ConsoleFoundation.java:197)
> 
>        at net.grinder.Console.run(Console.java:73)
>        at net.grinder.Console.main(Console.java:92)
> 
> 
> 
> 
> --
> View this message in context: http://grinder.996249.n3.nabble.com/Using-Barrier-with-high-load-and-got-the-error-Can-t-add-waiter-no-barriers-returned-tp8723p8724.html
> Sent from the Grinder - User mailing list archive at Nabble.com.
> 
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