From 5570f1b60a557baf9ec6af412f8d5bd75fc44891 Mon Sep 17 00:00:00 2001 From: Roy van Rijn Date: Wed, 3 Jan 2024 20:44:24 +0100 Subject: Roy van Rijn: memory mapped files, branchless parsing, bitwiddle magic Added SWAR (SIMD Within A Register) code to increase bytebuffer processing/throughput Delaying the creation of the String by comparing hash, segmenting like spullara, improved EOL finding Co-authored-by: Gunnar Morling --- calculate_average_royvanrijn.sh | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'calculate_average_royvanrijn.sh') diff --git a/calculate_average_royvanrijn.sh b/calculate_average_royvanrijn.sh index ae22a3e..ede6451 100755 --- a/calculate_average_royvanrijn.sh +++ b/calculate_average_royvanrijn.sh @@ -16,5 +16,11 @@ # -JAVA_OPTS="" +# Added for fun, doesn't seem to be making a difference... +if [ -f "target/calculate_average_royvanrijn.jsa" ]; then + JAVA_OPTS="-XX:SharedArchiveFile=target/calculate_average_royvanrijn.jsa -Xshare:on" +else + # First run, create the archive: + JAVA_OPTS="-XX:ArchiveClassesAtExit=target/calculate_average_royvanrijn.jsa" +fi time java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_royvanrijn -- cgit v1.2.3