trace: roll tracing and tracing-subscriber dependencies#615
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This picks up upstream changes tokio-rs/tracing#853, tokio-rs/tracing#868, and tokio-rs/tracing#869 which improve performance in some use cases. The overhead removed by these changes may already be amortized enough in the proxy that it's not a problem, but it seems worth picking up regardless.
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I'm doing a bench run with this because I'm curious to see if we benefit from it as much as the Rust compiler did --- it may improve tails a bit! |
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Turns out that the upstream change, although it had about a 30% performance improvement in Oh well. We should probably pick up the dependency update anyway. |
olix0r
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Aug 3, 2020
kleimkuhler
approved these changes
Aug 3, 2020
Signed-off-by: Eliza Weisman <[email protected]>
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This release enables a multi-threaded runtime. Previously, the proxy would only ever use a single thread for data plane processing; now, when the proxy is allocated more than 1 CPU share, the proxy allocates a thread per available CPU. This has shown substantial latency improvements in benchmarks, especially when the proxy is serving requests for many concurrent connections. --- * Add a `multicore` feature flag (linkerd/linkerd2-proxy#611) * Add `multicore` to default features (linkerd/linkerd2-proxy#612) * admin: add an endpoint to dump spawned Tokio tasks (linkerd/linkerd2-proxy#595) * trace: roll `tracing` and `tracing-subscriber` dependencies (linkerd/linkerd2-proxy#615) * stack: Add NewService::into_make_service (linkerd/linkerd2-proxy#618) * trace: tweak tracing & test support for the multithreaded runtime (linkerd/linkerd2-proxy#616) * Make FailFast cloneable (linkerd/linkerd2-proxy#617) * Move HTTP detection & server into linkerd2_proxy_http (linkerd/linkerd2-proxy#619) * Mark tap integration tests as flakey (linkerd/linkerd2-proxy#621) * Introduce a SkipDetect layer to preempt detection (linkerd/linkerd2-proxy#620)
adleong
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Aug 6, 2020
This release enables a multi-threaded runtime. Previously, the proxy would only ever use a single thread for data plane processing; now, when the proxy is allocated more than 1 CPU share, the proxy allocates a thread per available CPU. This has shown substantial latency improvements in benchmarks, especially when the proxy is serving requests for many concurrent connections. --- * Add a `multicore` feature flag (linkerd/linkerd2-proxy#611) * Add `multicore` to default features (linkerd/linkerd2-proxy#612) * admin: add an endpoint to dump spawned Tokio tasks (linkerd/linkerd2-proxy#595) * trace: roll `tracing` and `tracing-subscriber` dependencies (linkerd/linkerd2-proxy#615) * stack: Add NewService::into_make_service (linkerd/linkerd2-proxy#618) * trace: tweak tracing & test support for the multithreaded runtime (linkerd/linkerd2-proxy#616) * Make FailFast cloneable (linkerd/linkerd2-proxy#617) * Move HTTP detection & server into linkerd2_proxy_http (linkerd/linkerd2-proxy#619) * Mark tap integration tests as flakey (linkerd/linkerd2-proxy#621) * Introduce a SkipDetect layer to preempt detection (linkerd/linkerd2-proxy#620)
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This picks up upstream changes tokio-rs/tracing#853,
tokio-rs/tracing#868, and tokio-rs/tracing#869 which improve performance
in some use cases. The overhead removed by these changes may already be
amortized enough in the proxy that it's not a problem, but it seems
worth picking up regardless.