RFR(s): 8248295: serviceability/jvmti/CompiledMethodLoad/Zombie.java failure with Graal

[Fairoz Matte]

Hi Vladimir, 

Thanks for looking into.
This is intermittent crash, and is reproducible in windows debug build environment. Below is the testing performed.

1. Issues observed 7/100 runs, ReservedCodeCacheSize=20m with "-XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler"
2. Issues observed 0/300 runs, ReservedCodeCacheSize=30m with "-XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler" 

Thanks,
Fairoz

> -----Original Message-----
> From: Vladimir Kozlov
> Sent: Monday, August 17, 2020 11:22 PM
> To: Fairoz Matte <fairoz.matte at oracle.com>; hotspot-compiler-
> dev at openjdk.java.net; serviceability-dev at openjdk.java.net
> Cc: Coleen Phillimore <coleen.phillimore at oracle.com>; Dean Long
> <dean.long at oracle.com>
> Subject: Re: RFR(s): 8248295:
> serviceability/jvmti/CompiledMethodLoad/Zombie.java failure with Graal
> 
> Hi Fairoz,
> 
> How you determine that +10Mb is enough with Graal?
> 
> Thanks,
> Vladimir
> 
> On 8/17/20 5:46 AM, Fairoz Matte wrote:
> > Hi,
> >
> >
> >
> > Please review this small test change to work with Graal.
> >
> >
> >
> > Background:
> >
> > Graal require more code cache compared to c1/c2. but the test case always
> set it to 20MB. This may not be sufficient when running graal.
> >
> > Default configuration for ReservedCodeCacheSize = 250MB
> >
> > With graal enabled, ReservedCodeCacheSize = 350MB
> >
> >
> >
> > Either we can modify the framework to honor ReservedCodeCacheSize for
> graal or just update the testcase.
> >
> > There are not many test cases they rely on ReservedCodeCacheSize or
> InitialCodeCacheSize. So the fix prefer the later one.
> >
> >
> >
> > JBS - https://bugs.openjdk.java.net/browse/JDK-8248295
> >
> > Webrev - http://cr.openjdk.java.net/~fmatte/8248295/webrev.00/
> >
> >
> >
> > Thanks,
> >
> > Fairoz
> >
> >
> >