go resource_error ai_generated true

warning: goroutine sleeping in loop (goroutine 9)

ID: go/goroutine-sleep-in-loop

Also available as: JSON · Markdown · 中文
80%Fix Rate
82%Confidence
0Evidence
2024-09-14First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.20 active — — —

Root Cause

A goroutine calls time.Sleep in a tight loop, consuming resources and potentially blocking.

generic

中文

goroutine 在紧密循环中调用 time.Sleep，消耗资源并可能阻塞。

Workarounds

  1. 90% success 
    ticker := time.NewTicker(time.Second)
defer ticker.Stop()
for range ticker.C {
    // do work
}
  2. 85% success 
    select {
case <-time.After(time.Second):
    // do work
case <-ctx.Done():
    return
}

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Still busy-waits; doesn't solve the underlying issue.

  2. 70% fail

    Gosched doesn't block; it just yields, but loop continues.

  3. 90% fail

    Wastes CPU and may cause performance issues.