javac server: No port file values materialized. on AIX

[David Holmes]

On 18/01/2016 3:08 AM, Andreas Lundblad wrote:
> On Fri, Jan 15, 2016 at 10:59:08AM +0100, Volker Simonis wrote:
>> Maybe the timeout of five seconds is too small?
>>
>> Our AIX boxes are not the fastest and we also have a lot of stuff on NFS shares.
>>
>> I recently saw this one:
>>
>> [CLIENT] Exception caught: java.io.IOException: No port file values
>> materialized. Giving up after 6676 ms
>>
>> Normally the timeout should be just about a little more than 5 seconds
>> but here the exception reports more than 6 seconds which might be a
>> hint that the machine was severely overloaded.
>>
>> Regards,
>> Volker
>
> Interesting observation. The code for waiting for valid port file values basically looks like
>
>      for (int i = 0; i < 10; i++) {
>          checkPortFile();
>          if (successful)
>              break;
>          sleep(500);
>      }
>
> so the fact that it even reaches 6676 ms looks suspicious when it comes to load.

Why? Under load those sleep(500)'s might not return for much longer; and 
the whole things might be time preempted at any point for an extended 
period of time.

David
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> -- Andreas
>