Community
Participate
Working Groups
Below are the details about issue with JRE 1.8.0_275 build. -GC is not executing as expected. Platform: Mac OS X (mojave, catalina etc) JRE-1: openjdk version "1.8.0_275" OpenJDK Runtime Environment (build 1.8.0_275-b01) Eclipse OpenJ9 VM (build openj9-0.23.0, JRE 1.8.0 Mac OS X amd64-64-Bit 20201112_584 (JIT enabled, AOT enabled) OpenJ9 - 0394ef7 OMR - 582366ae5 JCL - b52d2ff7ee based on jdk8u275-b01) JRE-2: java version "1.8.0_181" Java(TM) 2 Runtime Environment, Standard Edition (IBM build 1.8.0_181-b13 25_Jul_2018_11_11 Mac OS X x64(SR5 FP20)) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode) IBM Java ORB build orb80-20180617.00 XML build XL TXE Java 1.0.60 XML build IBM JAXP 1.6.1 XML build XML4J 4.5.30 gcpolicy: concurrentScavenge (tried with default gencon too) Problem: with JRE-1 which we use with our application. -GC is not executing a expected. -There is a significant increase in memory even application is idle. -performing tests causes increase in memory - but not released as expected. when using JRE-2 shows significant advantage compared to JRE-1 with our application. Analysis: Testing scenario: 1 JRE-1: starting our application in consumes: 292.0MB leave application idle for 1 hour: 28.9MB CONSUMED After testing and final memory will be: 693.5MB Testing scenario: 2 JRE-2: starting our application in consumes: 486.7MB leave application idle for 1 hour: 7.7MB RELEASED After testing and final memory will be: 315.1MB -Testing scenarios are same. -Mac OS X is installed in VM environment for testing. -Our application is standalone application which runs in Mac as well as Windows. -The issue is not seen with windows version of JRE. can you please help with the issue so that we can continue with JRE-1 ?
