Allocating on the Stack
Keith Randall
27 February 2026
We’re always looking for ways to make Go programs faster. In the last 2 releases, we have concentrated on mitigating a particular source of slowness, heap allocations. Each time a Go program allocates memory from the heap, there’s a fairly large chunk of code that needs to run to satisfy that allocation. In addition, heap allocations present additional load on the garbage collector. Even with recent enhancements like Green Tea, the garbage collector still incurs substantial overhead.
https://go.dev/blog/allocation-optimizations
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Allocating on the Stack - The Go Programming Language
A description of some of the recent changes to do allocations on the stack instead of the heap.
2February 27, 2026 1.6K 10 8
