[9] RFR(S): 8072774: bigapps/Weblogic+medrec/nowarnings fails due to CodeHeap 'profiled nmethods' exhaustion

[Tobias Hartmann]

Hi,

please review the following patch.

https://bugs.openjdk.java.net/browse/JDK-8072774

http://cr.openjdk.java.net/~thartmann/8072774/top/webrev.00/
http://cr.openjdk.java.net/~thartmann/8072774/hotspot/webrev.00/

Problem:
Weblogic issues a warning because the profiled code heap is full. However, there is still space in other code heaps.

Solution:
Extend the "fallback" solution such that profiled code is stored in the non-profiled code heap (and the other way around) if the code cache is really full. Like this, we try to establish the code type separation as long as possible, potentially improving iTLB and iCache behaviour, but also use all the available space if needed.

Thanks,
Tobias