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Added UseTransparentHugePages after testing on a box

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Dimitar Dimitrov 2024-01-08 02:09:42 +09:00 committed by Gunnar Morling
parent 82cb32946e
commit 23913da5a0
1 changed files with 7 additions and 4 deletions
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calculate_average_ddimtirov.sh
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@ -1,4 +1,4 @@
#!/bin/sh
#!/bin/bash
#
# Copyright 2023 The original authors
#
@ -15,9 +15,12 @@
# limitations under the License.
#
# also tried: 23.ea.3-open, 21.0.1-graalce, 21.0.1-graal, 21.0.1.crac-librca (tried CRaC API to see if it preserves JIT state)
. "$HOME/.sdkman/bin/sdkman-init.sh"
sdk use java 21.0.1-tem
# --enable-preview to use the new memory mapped segments
# We don't allocate much, so just give it 1G heap and turn off GC; the AlwaysPreTouch was suggested by the ergonomics
JAVA_OPTS="--enable-preview -da -dsa -Xms1g -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+AlwaysPreTouch"
# Experimenting on the target VM config with various memory tweaks showed that UseTransparentHugePages gives us 10% boost
JAVA_OPTS="--enable-preview -da -dsa -Xms1g -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+AlwaysPreTouch -XX:+UseTransparentHugePages"
time java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_ddimtirov
# & "$Env:JAVA_HOME/bin/java" --enable-preview -Xms1g -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+AlwaysPreTouch --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_ddimtirov