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rt(alt): tweak some constants to improve scalability #5935

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merged 1 commit into from Aug 16, 2023

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This patch aims to reduce the number of threads that get no-op wakeups.

This patch aims to reduce the number of threads that get no-op wakeups.
@carllerche carllerche added A-tokio Area: The main tokio crate M-runtime Module: tokio/runtime labels Aug 15, 2023
@github-actions github-actions bot added the R-loom-multi-thread-alt Run loom multi-thread alt tests on this PR label Aug 15, 2023
@@ -17,6 +17,93 @@ use std::task::{Context, Poll, Waker};

/// Stored in the I/O driver resource slab.
#[derive(Debug)]
// # This struct should be cache padded to avoid false sharing. The cache padding rules are copied
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Yes, I know it is time to factor this out into a CachePadded abstraction. I pinky promise I'll do it in a follow-up, but I don't want to mix up concerns in this PR.

@carllerche carllerche merged commit 6e42c26 into master Aug 16, 2023
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@carllerche carllerche deleted the rt-alt-tweaks branch August 16, 2023 15:20
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A-tokio Area: The main tokio crate M-runtime Module: tokio/runtime R-loom-multi-thread-alt Run loom multi-thread alt tests on this PR
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2 participants