Travis build fails by timeout in testErrnoCallback for all pull requests

[Doug Simon]

> On 16 Jul 2018, at 16:00, Remi Forax <forax at univ-mlv.fr> wrote:
> 
> Hi Doug,
> 
> ----- Mail original -----
>> De: "Doug Simon" <doug.simon at oracle.com>
>> À: "Dmitry Samersoff" <dms at samersoff.net>
>> Cc: "graal-dev" <graal-dev at openjdk.java.net>
>> Envoyé: Lundi 16 Juillet 2018 15:48:10
>> Objet: Re: Travis build fails by timeout in testErrnoCallback for all pull requests
> 
>>> On 16 Jul 2018, at 15:28, Dmitry Samersoff <dms at samersoff.net> wrote:
>>> 
>>> Hello Everybody,
>>> 
>>> Travis build "JDK=\"jdk11\" GATE=\"build,test\"", fails by timeout:
>>> 
>>> Test testErrnoCallback(com.oracle.truffle.nfi.test.ErrnoNFITest) not
>>> finished after 249 ms
>>> 
>>> for all pull requests.
>>> 
>>> Is there any workaround/solution for this problem?
>> 
>> I think the issue is actually a compilation error caused by the preceding test
>> com.oracle.truffle.sl.test.SLDebugDirectTest. I've opened an internal ticket
>> for this and hope it will be investigated soon. Can you please let me know if
>> this fails for you when JAVA_HOME points to JDK11:
>> 
>> mx unittest -Dgraal.TruffleBackgroundCompilation=false
>> -Dgraal.TruffleCompileImmediately=true -Dgraal.TraceTruffleCompilation=false
>> com.oracle.truffle.sl.test.SLDebugDirectTest
>> 
> 
> this is maybe a different bug but i also had the same kind of issue with latest jdk 11 (b22),
> https://urldefense.proofpoint.com/v2/url?u=https-3A__travis-2Dci.org_forax_exotic_jobs_404348683&d=DwIFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=BmNY5KuefACTr_P43s8fXOXgNDkDiqlviyafeiVaP18&m=fbdeH0MKVtcRhPTiuJVQpQhRJkri9lOVsGDzXQE4aA8&s=UGeDId7vPADJKV0Wuo4VqJJFFrJqaUoQSz3T19HevCc&e=
> (note that while these are perf tests, the perf tests are using c2, only the VM that runs the tester is using Graal)
> 
> the VM has finished to run but something is holding it to exit.

Thanks for the suggestion but I think it's a different issue. In the failing Travis test, we have a combination of Truffle compilation being done on background threads and the option TrufflePerformanceWarningsAreFatal=true. So a compilation triggered by an earlier unittest can fail and interrupt monitoring of a later test while the VM is exiting.

-Doug