[wildfly-dev] xnio selection err

Ales Justin ales.justin at gmail.com
Thu Jan 2 09:25:59 EST 2014


> Oh is it always at shutdown?

No.
It's also while the app runs.
But dunno how to re-produce it on a constant basis.

-Ales

> On Jan 2, 2014, at 5:28 AM, Ales Justin <ales.justin at gmail.com> wrote:
> 
>> Here:
>> * https://gist.github.com/alesj/8217872
>> 
>> But I didn't get any WARN log during my "chat", only at shutdown.
>> Does it still help? Otherwise I can try to catch this when getting WARNings during chat.
>> 
>> -Ales
>> 
>> On 28 Dec 2013, at 17:14, Jason Greene <jgreene at redhat.com> wrote:
>> 
>>> Can you try using dtruss for kevent:
>>> 
>>> 1. Start server
>>> 2. Get PID (jps)
>>> 3. sudo dtruss -f -t kevent -p PID 2> truss.log
>>> 
>>> 
>>> Sent from my iPad
>>> 
>>> On Dec 27, 2013, at 9:47 AM, Ales Justin <ales.justin at gmail.com> wrote:
>>> 
>>>> Debugging org.xnio.nio.WorkerThread : 
>>>> (with few e.printStackTrace() invocations)
>>>> 
>>>> https://gist.github.com/alesj/8148775
>>>> 
>>>> On 27 Dec 2013, at 16:16, Jason Greene <jgreene at redhat.com> wrote:
>>>> 
>>>>> BTW one possible cause is that your user has exceeded the max open files  limit, and you need to bump ulimit.
>>>>> 
>>>>> The reason I am interested in the stack trace though is to see which poll provider is throwing the error.
>>>>> 
>>>>> Sent from my iPhone
>>>>> 
>>>>> On Dec 27, 2013, at 9:07 AM, Jason Greene <jgreene at redhat.com> wrote:
>>>>> 
>>>>>> Oops
>>>>>> 
>>>>>> Sent from my iPhone
>>>>>> 
>>>>>> On Dec 27, 2013, at 9:00 AM, Jason Greene <jgreene at redhat.com> wrote:
>>>>>> 
>>>>>>> Any chance you can get a stack trace out of it? Upping the log level or using a debugger to catch IOException would do the trick.
>>>>>>> 
>>>>>>> The error means the OS is throwing EINVAL.
>>>>>>> 
>>>>>>> Is this a OSX Mavericks? If so can you double check you are running the latest JVM?
>>>>>>> 
>>>>>>> Sent from my iPhone
>>>>>>> 
>>>>>>> On Dec 27, 2013, at 8:36 AM, Tomaž Cerar <tomaz.cerar at gmail.com> wrote:
>>>>>>> 
>>>>>>>> Isn't that the same error that happens only on your mac also in few other cases?
>>>>>>>> 
>>>>>>>> Can you try on any other platform?
>>>>>>>> 
>>>>>>>> Sent from my Phone
>>>>>>>> From: Ales Justin
>>>>>>>> Sent: ‎27.‎12.‎2013 14:14
>>>>>>>> To: Wildfly Dev mailing list
>>>>>>>> Subject: [wildfly-dev] xnio selection err
>>>>>>>> 
>>>>>>>> While using UnderTow's JSR WebSockets,
>>>>>>>> implementing simple chat app, between 2 diff browsers (Chrome and Safari),
>>>>>>>> I get a flood of these log lines:
>>>>>>>> 
>>>>>>>> 14:09:22,890 WARN  [org.xnio.nio.selector] (default I/O-3) XNIO008000: Received an I/O error on selection: java.io.IOException: Invalid argument
>>>>>>>> 
>>>>>>>> Any idea?
>>>>>>>> 
>>>>>>>> -Ales
>>>>>>>> 
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>> 
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