JDK-8209516 : DSA generateKeyPair performance regression in jdk11b22 (SPARC)
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 11,12
  • Priority: P4
  • Status: Closed
  • Resolution: Won't Fix
  • OS: solaris
  • CPU: sparc
  • Submitted: 2018-08-14
  • Updated: 2018-08-15
  • Resolved: 2018-08-15
Related Reports
Relates :  
JDK-8194740 - UseSubwordForMaxVector causes performance regression
Description
In jdk11b19 was introduces performance regression. 
up to -5% on Solaris/SPARC 

Guilty commit is: 
http://hg.openjdk.java.net/jdk/jdk11/rev/dd7ce84016a5

JMH options to execute: 
micro.benchmarks.crypto.small.KeyPairGeneratorBench.generateKeyPair -p algorithm=DSA 

Crypto microbenchmarks are available in Aurora "Standard Submit" 
under Benchmarks-> Micros -> Micros-Crypto
Comments
The regression was introduced by JDK-8194740. Based on the discussions in that bug, some regressions are expected and were discussed with the performance group. I'll therefore close this as "Won't Fix". Please re-open if there are any objections.
15-08-2018
Maybe related to https://bugs.openjdk.java.net/browse/JDK-8209449
14-08-2018