[9] RFR (S): 8148940: java/lang/ref/FinalizeOverride.java can time out due to frequent safepointing

[Aleksey Shipilev]

On 02/26/2016 01:47 PM, Tobias Hartmann wrote:
> I still wonder why we then do 2x compilations with ISC enabled? Do 
> the bootstrapped invokedynamic call sites invoke that many methods
> compared to the baseline without ISC?

I think that's because current ISC not only prompts the compilation of
java.lang.invoke infra, but also spins up an anonymous class that holds
the concat stub (to be switched off in a few weeks), which would also
get compiled when hot.

Anyhow, that's a trigger, and not the underlying issue. The underlying
issue is DoSing the JVM through System.gc/runFinalization busyloop.

-Aleksey

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