mirror of https://github.com/apache/lucene.git
47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
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Local developer settings
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========================
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The first invocation of any task in Lucene/Solr gradle build will generate
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and save a project-local 'gradle.properties' file. This file contains
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the defaults you may (but don't have to) tweak for your particular hardware
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(or taste).
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This is an overview of some of these settings.
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Parallelism
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-----------
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Gradle build can run tasks in parallel but by default it consumes all CPU cores which
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is too optimistic a default for Lucene/Solr tests. You can disable the parallelism
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entirely or assign it a 'low' priority with these properties:
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org.gradle.parallel=[true, false]
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org.gradle.priority=[normal, low]
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The default level of parallelism is computed based on the number of cores on
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your machine (on the first run of gradle build). By default these are fairly conservative
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settings (half the number of cores for workers, for example):
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org.gradle.workers.max=[X]
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tests.jvms=[N <= X]
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The number of test JVMs can be lower than the number of workers: this just means
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that two projects can run tests in parallel to saturate all the workers. The I/O and memory
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bandwidth limits will kick in quickly so even if you have a very beefy machine bumping
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it too high may not help.
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You can always override these settings locally using command line as well:
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gradlew -Ptests.jvms=N --max-workers=X
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Gradle Daemon
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-------------
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The gradle daemon is a background process that keeps an evaluated copy of the project
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structure, some caches, etc. It speeds up repeated builds quite a bit but if you don't
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like the idea of having a (sizeable) background process running in the background,
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disable it.
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org.gradle.daemon=[true, false]
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org.gradle.jvmargs=...
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