The mutex was 68 times faster, until I added work
One goroutine: 2.5 ns for the mutex, 172.6 ns for the channel. Sixteen goroutines with real work: the channel wins by less than the harness's own error.
#sync
Articles tagged “sync”
2 articlesConcurrency in practice
sync.Pool survives one GC, not two
A pool holding 100 objects lost none across one collection and all 100 across two. Here is the victim cache, and what it costs at 122,000 ops per millisecond.