9100ed6316
* Version 3 * Use SWAR algorithm from netty for finding a symbol in a string * Faster equals - store the remainder in a long field (- 0.5s) * optimise parsing numbers - prep * Keep tweaking parsing logic * Rewrote number parsing may be a tiby bit faster it at all * Epsilon GC
26 lines
1.1 KiB
Bash
Executable File
26 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright 2023 The original authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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JAVA_OPTS="--enable-preview -XX:+UseTransparentHugePages"
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# epsilon GC needs enough memory or it makes things worse
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# see https://stackoverflow.com/questions/58087596/why-are-repeated-memory-allocations-observed-to-be-slower-using-epsilon-vs-g1
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# 2GB seems to be the sweet spot
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JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions -XX:-EnableJVMCI -XX:+UseEpsilonGC -Xmx2G -Xms2G -XX:+AlwaysPreTouch"
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java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_roman_r_m
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