Remove some overhead from TransportService message handling #124428
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Avoiding some indirection, volatile-reads and moving the listener functionality that needlessly kept iterating an empty CoW list (creating iterator instances, volatile reads, more code) in an effort to improve the low IPC on transport threads.
original-brownbear
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:Distributed Coordination/Network
elasticsearchmachine
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Team:Distributed Coordination
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Pinging @elastic/es-distributed-coordination (Team:Distributed Coordination) |
DaveCTurner
approved these changes
Mar 9, 2025
| @@ -32,7 +33,7 @@ protected boolean addMockHttpTransport() { | |||
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| @Override | |||
| protected Collection<Class<? extends Plugin>> nodePlugins() { | |||
| return List.of(AsyncSearch.class); | |||
| return List.of(AsyncSearch.class, MockTransportService.TestPlugin.class); | |||
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I'd prefer we added these things to super.nodePlugins() with appendToCopy or similar. Doesn't really matter in this case right now but adding stuff to ESIntegTestCase#nodePlugins everywhere for an experiment is sometimes handy.
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Makes sense :) done :)
| Optional<Throwable> throwable = ExceptionsHelper.unwrapCausesAndSuppressed(error, t -> t.getStackTrace().length > 0); | ||
| transportMessageHasStackTrace.set(throwable.isPresent()); | ||
| internalCluster.getDataNodeInstances(TransportService.class) | ||
| .forEach(ts -> ((MockTransportService) ts).addMessageListener(new TransportMessageListener() { |
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Suggest asInstanceOf(MockTransportService.class, ts), we sometimes catch a ClassCastException without failing the test.
original-brownbear
added
the
auto-backport
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Thanks David! |
💔 Backport failed
You can use sqren/backport to manually backport by running |
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Avoiding some indirection, volatile-reads and moving the listener functionality that needlessly kept iterating an empty CoW list (creating iterator instances, volatile reads, more code) in an effort to improve the low IPC on transport threads.