Any news from JDK-8151981 in Java8 ?

[Hannes Wallnöfer]

Hi Rémi,

Am 12.12.2017 um 14:52 schrieb Remi Forax <forax at univ-mlv.fr>:
> 
> Hi Hannes,
> it can also be Nashorn triggering too much deoptimizations creating a deoptimization storm.

I agree. But given that the problem manifests itself in java.lang.invoke I think the first step is to understand what is going wrong there. Without a better understanding of the problem it is very hard to provide provide any help.

Hannes 


> Rémi
> 
> ----- Mail original -----
>> De: "Hannes Wallnöfer" <hannes.wallnoefer at oracle.com>
>> À: "João Paulo Varandas" <joaovarandas at inpaas.com>
>> Cc: nashorn-dev at openjdk.java.net
>> Envoyé: Mardi 12 Décembre 2017 14:11:49
>> Objet: Re: Any news from JDK-8151981 in Java8 ?
> 
>> Hi João,
>> 
>> this functionality is part of java.lang.invoke package, not Nashorn, so we can’t
>> help you here.
>> 
>> The best place to ask about this would be the core-libs-dev mailing list.
>> 
>> Regards,
>> Hannes
>> 
>> 
>>> Am 11.12.2017 um 23:07 schrieb João Paulo Varandas <joaovarandas at inpaas.com>:
>>> 
>>> Hi guys!
>>> 
>>> We are also experiencing some odd issues here with setCallSiteTargetNormal.
>>> https://bugs.openjdk.java.net/browse/JDK-8151981
>>> 
>>> Our cenario is:
>>> 
>>> - Web Application using Tomcat;
>>> - 8 HTTP Threads;
>>> - A single ScriptEngine for the whole application;
>>> 
>>> When a request hits the server, that request may be processed by a Nashorn
>>> Script, this script is evaluated during runtime, run queries (Jdbc), and
>>> return results (Maps and/or Collections) that are serialized to JSON before
>>> being written to the response.
>>> 
>>> The problem is... sometimes 7 or more threads are getting stuck in the
>>> setCallSiteTargetNormal and I have no clue why is that happening. Could you
>>> guys help me out troubleshooting this? - Or, if there's a bug, what are the
>>> recomended fixes I should do?
>>> 
>>> 
>>> By the way, those are not freshly created ScriptEngines (which differ from
>>> the normal issues related in the internet).
>>> 
>>> --
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