Smarter Locks: Diving into Go 1.24’s Mutex Spin Optimisation

Ever wondered what happens when too many goroutines fight over the same lock? In Go 1.24, sync.Mutex got a clever upgrade: smarter spinning!
In this talk, we’ll peek under the hood of the Go runtime to see how the new spin loop works, why it’s faster, and how it helps your services scale more smoothly. Expect runtime internals, benchmarks, and a few lock-heavy demos where the new behaviour shines!

LEVEL: Advanced

Place
Michelangelo
Length
45 min
When
October 6th, 2025
12:15

Abstract

Ever wondered what happens when too many goroutines fight over the same lock? In Go 1.24, sync.Mutex got a clever upgrade: smarter spinning!
In this talk, we’ll peek under the hood of the Go runtime to see how the new spin loop works, why it’s faster, and how it helps your services scale more smoothly. Expect runtime internals, benchmarks, and a few lock-heavy demos where the new behaviour shines!

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