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Excessive goroutines cause context switching and resource exhaustion

6/10 Medium

Overusing goroutines leads to excessive context switching, performance degradation, and memory waste. 10,000 goroutines can consume 20+ MB of memory with overhead, and the Go scheduler incurs penalties causing throughput to halve.

Go
Category
performance
Workaround
partial
Stage
build
Freshness
persistent
Scope
language
Upstream
open
Recurring
Yes

Sources

Collection History

Query: “What are the most common pain points with Go for developers in 2025?”3/29/2026

Running 1,000 goroutines could consume 2 MB of memory, while 10,000 could use up to 20 MB with additional overhead. The Go scheduler incurs a penalty with significant context switching; even a modest increase can halve throughput.

Created: 3/29/2026Updated: 3/29/2026