SYNOPSIS:
Perf: SPECjb2013 critical jOPs - up to 50% regressed

OPERATING SYSTEM(S):
All platforms

FULL JDK VERSION(S):

jdk 8u45

DESCRIPTION:

STEPS TO REPRODUCE:
Run benchmark test SPECjbb2013 on configuration Multi-JVM (2-group).

Result obtained :
critical jOPS regression by 50%
                                              maxJOPs critical_jOPS hbIR_max hbIR_settled
=============================================================================
jdk 8u25 (20140917) 28193.667 12447 33169 31275
jdk 8u45 (20150410) 28110.750 8449 33169 31042

Expected Result :
The regression doesn't happen.


Description:
The regression is caused by an oracle bug change "8056248: Improve ForkJoin thread throttling".


Proposed fix :