zuul-core: Default worker pool size to 2 * processor count #817
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argha-c
changed the title
artgon
reviewed
Jun 16, 2020
| @@ -33,7 +33,7 @@ | |||
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| public DefaultEventLoopConfig() | |||
| { | |||
| eventLoopCount = WORKER_THREADS.get() > 0 ? WORKER_THREADS.get() : PROCESSOR_COUNT; | |||
| eventLoopCount = WORKER_THREADS.get() > 0 ? WORKER_THREADS.get() : Math.max(8, PROCESSOR_COUNT*2); | |||
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max is actually the minimum here.
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In my past experience with Netty, at reasonable scale, a conservative but sane default has been to set the worker pool to 2x the virtual CPU.
This PR sets a ceiling of
8(arguably, a magic number), but more importantly, doubles the worker pool for anything running on lower than 4 cores.We obviously need to run benchmarks on this, but I believe this is worth reconsidering.