mikemccand commented on pull request #518:
URL: https://github.com/apache/lucene/pull/518#issuecomment-999104766
> It is very important to do the following:
>
> * don't disable tiered compilation and don't enable batch
> * use large index and long lifetime of a single JVM
Thanks @uschindler -- I think I am not disabling tiered compilation.
I run 20 iterations of each task, but it is relatively quick (~13-14 seconds
per JVM instance). I can retry with more per-task iterations to see if the
tiered compilation can improve things later on.
Here's the full JVM command of base and competitor:
```
iter 19
new-mmap:
log: /l/logs.nightly/prefix.new-mmap.19 + stdout
run: /opt/jdk-18-ea-28/bin/java --add-modules jdk.incubator.foreign
-Xmx32g -Xms32g -server -XX:+UseParallelGC -Djava.io.tmpdir=/l/tmp
-XX:StartFlightRecording=dumponexit=true,maxsize=250M,settings=/l/util/src/\
python/profiling.jfc,filename=/l/util/bench-search-prefix-new-mmap-19.jfr
-XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints -classpath
/l/trunk-new-mmap/lucene/core/build/libs/lucene-core-10.0.0-SNAPSHOT.jar:/l/\
trunk-new-mmap/lucene/core/build/classes/java/test:/l/trunk-new-mmap/lucene/sandbox/build/classes/java/main:/l/trunk-new-mmap/lucene/misc/build/classes/java/main:/l/trunk-new-mmap/lucene/facet/build/classes/java/main\
:/l/trunk-new-mmap/lucene/analysis/common/build/classes/java/main:/l/trunk-new-mmap/lucene/analysis/icu/build/classes/java/main:/l/trunk-new-mmap/lucene/queryparser/build/classes/java/main:/l/trunk-new-mmap/lucene/gr\
ouping/build/classes/java/main:/l/trunk-new-mmap/lucene/suggest/build/classes/java/main:/l/trunk-new-mmap/lucene/highlighter/build/classes/java/main:/l/trunk-new-mmap/lucene/codecs/build/classes/java/main:/l/trunk-ne\
w-mmap/lucene/queries/build/classes/java/main:/home/mike/.gradle/caches/modules-2/files-2.1/com.carrotsearch/hppc/0.9.0/fcc952fb6d378266b943bef9f15e67a4d45cfa88/hppc-0.9.0.jar:/l/util/lib/HdrHistogram.jar:/l/util/bui\
ld perf.SearchPerfTest -dirImpl MMapDirectory -indexPath
/l/indices/wikimediumall.trunk.facets.taxonomy:Date.taxonomy:Month.taxonomy:DayOfYear.taxonomy:RandomLabel.taxonomy.sortedset:Month.sortedset:DayOfYear.sorteds\
et:RandomLabel.sortedset.Lucene90.Lucene90.dvfields.nd27.625M -facets
taxonomy:Date;Date -facets taxonomy:Month;Month -facets
taxonomy:DayOfYear;DayOfYear -facets taxonomy:RandomLabel.taxonomy;RandomLabel
-facets sor\
tedset:Month;Month -facets sortedset:DayOfYear;DayOfYear -facets
sortedset:RandomLabel.sortedset;RandomLabel -analyzer
StandardAnalyzerNoStopWords -taskSource
/l/util/tasks/wikimedium.10M.nostopwords.tasks -searchThr\
eadCount 6 -taskRepeatCount 20 -field body -tasksPerCat 1 -staticSeed
-291966 -seed -5054409 -similarity BM25Similarity -commit multi -hiliteImpl
FastVectorHighlighter -log /l/logs.nightly/prefix.new-mmap.19 -topN 10\
-pk
13.1 s
base:
log: /l/logs.nightly/prefix.base.19 + stdout
run: /opt/jdk-18-ea-28/bin/java --add-modules jdk.incubator.foreign
-Xmx32g -Xms32g -server -XX:+UseParallelGC -Djava.io.tmpdir=/l/tmp
-XX:StartFlightRecording=dumponexit=true,maxsize=250M,settings=/l/util/src/\
python/profiling.jfc,filename=/l/util/bench-search-prefix-base-19.jfr
-XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints -classpath
/l/trunk/lucene/core/build/libs/lucene-core-10.0.0-SNAPSHOT.jar:/l/trunk/lucene/\
core/build/classes/java/test:/l/trunk/lucene/sandbox/build/classes/java/main:/l/trunk/lucene/misc/build/classes/java/main:/l/trunk/lucene/facet/build/classes/java/main:/l/trunk/lucene/analysis/common/build/classes/ja\
va/main:/l/trunk/lucene/analysis/icu/build/classes/java/main:/l/trunk/lucene/queryparser/build/classes/java/main:/l/trunk/lucene/grouping/build/classes/java/main:/l/trunk/lucene/suggest/build/classes/java/main:/l/tru\
nk/lucene/highlighter/build/classes/java/main:/l/trunk/lucene/codecs/build/classes/java/main:/l/trunk/lucene/queries/build/classes/java/main:/home/mike/.gradle/caches/modules-2/files-2.1/com.carrotsearch/hppc/0.9.0/f\
cc952fb6d378266b943bef9f15e67a4d45cfa88/hppc-0.9.0.jar:/l/util/lib/HdrHistogram.jar:/l/util/build
perf.SearchPerfTest -dirImpl MMapDirectory -indexPath
/l/indices/wikimediumall.trunk.facets.taxonomy:Date.taxonomy:Mon\
th.taxonomy:DayOfYear.taxonomy:RandomLabel.taxonomy.sortedset:Month.sortedset:DayOfYear.sortedset:RandomLabel.sortedset.Lucene90.Lucene90.dvfields.nd27.625M
-facets taxonomy:Date;Date -facets taxonomy:Month;Month -fa\
cets taxonomy:DayOfYear;DayOfYear -facets
taxonomy:RandomLabel.taxonomy;RandomLabel -facets sortedset:Month;Month -facets
sortedset:DayOfYear;DayOfYear -facets
sortedset:RandomLabel.sortedset;RandomLabel -analyzer St\
andardAnalyzerNoStopWords -taskSource
/l/util/tasks/wikimedium.10M.nostopwords.tasks -searchThreadCount 6
-taskRepeatCount 20 -field body -tasksPerCat 1 -staticSeed -291966 -seed
-5054409 -similarity BM25Similarity -\
commit multi -hiliteImpl FastVectorHighlighter -log
/l/logs.nightly/prefix.base.19 -topN 10 -pk
13.7 s
```
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