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Commits on Apr 22, 2025

• runtime: commit to spinbitmutex GOEXPERIMENT

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• runtime: fix test of when a mutex is contended

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Commits on Mar 17, 2025

• internal/buildcfg: expand spinbitmutex platforms

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Commits on Mar 15, 2025

• runtime: log profile when mutex profile test fails

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Commits on Mar 14, 2025

• internal/runtime/atomic: add Xchg8 for s390x and wasm

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Commits on Nov 20, 2024

• runtime: clean up new lock2 structure

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Commits on Nov 15, 2024

• runtime: unify lock2, allow deeper sleep

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• runtime: allow futex OSes to use sema-based mutex

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Commits on Nov 14, 2024

• runtime: add test for mutex starvation

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Commits on Oct 2, 2024

• cmd/compile/internal/ssa: intrinsify atomic.Xchg8 on amd64

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• internal/runtime/atomic: add Xchg8 for amd64

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Commits on Aug 19, 2024

• runtime: store zero-delay mutex contention events

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Commits on Aug 14, 2024

• runtime: record all sampled mutex profile events

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Commits on Aug 9, 2024

• runtime: add direct benchmark of mutex contention

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Commits on Aug 2, 2024

• runtime: benchmark mutex handoffs

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Commits on Aug 1, 2024

• runtime: avoid futile mark worker acquisition

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• runtime: measure speed of procyield and osyield

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Commits on Jul 22, 2024

• internal/trace: make Reader output deterministic

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Commits on May 30, 2024

• Revert "runtime: prepare for extensions to waiting M list"

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• Revert "runtime: use semaphore structure for futex locks"

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• Revert "runtime: double-link list of waiting Ms"

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• Revert "runtime: profile mutex contention during unlock"

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• Revert "runtime: remove GODEBUG=runtimecontentionstacks"

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• Revert "runtime: improve runtime-internal mutex profile tests"

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• Revert "runtime: split mutex profile clocks"

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Commits on May 22, 2024

• runtime: lower mutex contention test expectations

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• runtime/pprof: ignore runtime-internal samples in test

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• runtime: split mutex profile clocks

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Commits on May 21, 2024

• runtime: improve runtime-internal mutex profile tests

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• runtime: remove GODEBUG=runtimecontentionstacks

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• runtime: profile mutex contention during unlock

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• runtime: double-link list of waiting Ms

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• runtime: use semaphore structure for futex locks

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• runtime: prepare for extensions to waiting M list

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Commits on Apr 24, 2024

• runtime: test mutex contention stacks and counts

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