2023-10-14 11:36:42 -04:00
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benchmarks
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==========
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The :lucene:benchmark-jmh module contains can be used to compile
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and execute JMH (https://github.com/openjdk/jmh) micro-benchmarks.
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Look at existing classes and JMH documentation for inspiration on how
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to write good micro-benchmarks.
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build
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=====
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To compile the project and prepare JMH launcher, run:
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gradlew :lucene:benchmark-jmh:assemble
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The above target will display exact commands to execute JMH from
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command line.
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run
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===
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java --module-path lucene/benchmark-jmh/build/benchmarks --module org.apache.lucene.benchmark.jmh
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You can pass any JMH options to the above command, for example:
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-h displays verbose help for all options
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-l list available benchmarks
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-lp list benchmarks that pass the filter and their parameters
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-prof perfasm use perfasm profiler to see assembly
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-p size=1024 pass "size=1024" parameter to benchmark
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regexp execute all benchmark containing regexp
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Here is an example running a targeted benchmark:
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java --module-path lucene/benchmark-jmh/build/benchmarks --module org.apache.lucene.benchmark.jmh VectorUtilBenchmark.binaryCosine -p size=1024
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Or running all methods and sizes of VectorUtilBenchmark
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java --module-path lucene/benchmark-jmh/build/benchmarks --module org.apache.lucene.benchmark.jmh VectorUtilBenchmark
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hsdis setup
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===========
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2023-10-21 02:02:24 -04:00
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Linux
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2023-10-14 11:36:42 -04:00
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In order to see disassembled instructions and not just binary instructions when using '-prof perfasm':
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$ git clone --depth 1 https://github.com/openjdk/jdk/
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$ curl -f https://ftp.gnu.org/gnu/binutils/binutils-2.38.tar.gz | tar -zxf -
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$ (cd jdk && bash ./configure --with-hsdis=binutils --with-binutils-src=../binutils-2.38 && make build-hsdis)
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$ cp jdk/build/linux-x86_64-server-release/support/hsdis/hsdis-amd64.so $JAVA_HOME/lib/server
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2023-10-21 02:02:24 -04:00
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Mac OS X
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In order to see disassembled instructions and not just binary instructions when using '-prof dtraceasm':
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This one is a little rough because they removed the Makefile so you have to bring it back from the dead.
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Otherwise you are stuck wrestling down full dependencies of OpenJDK (metal etc) just to compile a single C file.
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Also you must run benchmarks as root to use dtrace, but it works.
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$ git clone --depth 1 https://github.com/openjdk/jdk/
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2023-11-14 05:51:51 -05:00
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$ curl -f https://ftp.gnu.org/gnu/binutils/binutils-2.38.tar.gz | tar -zxf -
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2023-10-21 02:02:24 -04:00
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$ curl -fo jdk/src/utils/hsdis/binutils/Makefile https://raw.githubusercontent.com/openjdk/jdk/3c7ae1225f0d5575fd927a9b76fb40dc30e208cd/src/utils/hsdis/Makefile
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$ vi jdk/src/utils/hsdis/binutils/Makefile, change SOURCE = hsdis.c to SOURCE = hsdis-binutils.c
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$ vi jdk/src/utils/hsdis/binutils/hsdis-binutils.c, change #include "hsdis.h" to #include "../hsdis.h"
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2023-10-21 02:05:34 -04:00
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$ (cd jdk/src/utils/hsdis/binutils && make BINUTILS=../../../../../binutils-2.38 ARCH=aarch64)
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2023-10-21 02:02:24 -04:00
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$ cp jdk/src/utils/hsdis/binutils/build/macosx-aarch64/hsdis-aarch64.dylib $JAVA_HOME/lib/server
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