| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2176753 | 7 | Y. Ramakrishna | P3 | Closed | Fixed | b03 |
| JDK-2171818 | 6u4 | Y. Ramakrishna | P3 | Resolved | Fixed | b03 |
A change in the default choice of NewSize w/CMS has revealed an
existing day-one bug that can cause a start-up error w/small
initial heap settings:
% $ALT_BOOTDIR/bin/java -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Server VM (build 1.5.0-b64, mixed mode)
% $ALT_BOOTDIR/bin/java -server -Xms4m -Xmx128m -XX:+UseConcMarkSweepGC -version
Error occurred during initialization of VM
Too small initial heap for new size specified
% $ALT_BOOTDIR/bin/java -server -Xms4m -XX:NewSize=2m -Xmx128m -XX:+UseConcMarkSweepGC -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Server VM (build 1.5.0-b64, mixed mode)
This becomes somewhat worse with 6.0 where the default settings were changed
to use a larger default NewSize:
% $BOOTDIR/bin/java -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
% $BOOTDIR/bin/java -server -Xms16m -Xmx128m -XX:+UseConcMarkSweepGC -version
Error occurred during initialization of VM
Too small initial heap for new size specified
% $BOOTDIR/bin/java -server -Xms16m -XX:NewSize=8m -Xmx128m -XX:+UseConcMarkSweepGC -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
% $BOOTDIR/bin/java -server -Xms18m -XX:+UseConcMarkSweepGC -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
existing day-one bug that can cause a start-up error w/small
initial heap settings:
% $ALT_BOOTDIR/bin/java -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Server VM (build 1.5.0-b64, mixed mode)
% $ALT_BOOTDIR/bin/java -server -Xms4m -Xmx128m -XX:+UseConcMarkSweepGC -version
Error occurred during initialization of VM
Too small initial heap for new size specified
% $ALT_BOOTDIR/bin/java -server -Xms4m -XX:NewSize=2m -Xmx128m -XX:+UseConcMarkSweepGC -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Server VM (build 1.5.0-b64, mixed mode)
This becomes somewhat worse with 6.0 where the default settings were changed
to use a larger default NewSize:
% $BOOTDIR/bin/java -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
% $BOOTDIR/bin/java -server -Xms16m -Xmx128m -XX:+UseConcMarkSweepGC -version
Error occurred during initialization of VM
Too small initial heap for new size specified
% $BOOTDIR/bin/java -server -Xms16m -XX:NewSize=8m -Xmx128m -XX:+UseConcMarkSweepGC -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
% $BOOTDIR/bin/java -server -Xms18m -XX:+UseConcMarkSweepGC -version
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b97)
Java HotSpot(TM) Server VM (build 1.6.0-rc-b97, mixed mode)
- backported by
-
JDK-2171818 CMS: default choice of NewSize can cause obscure startup failure w/small -Xms
-
- Resolved
-
-
-
- Closed
-
- relates to
-
JDK-6407949 CMS: revisit and retune default settings of Eden, Survivor Spaces etc.
-
- Resolved
-
-
JDK-6627787 CMS: JVM refuses to start up with -Xms16m -Xmx16m
-
- Closed
-