Here's profile of http.go https://github.com/traviscline/web_bench/blob/master/http.go https://github.com/traviscline/web_bench/blob/master/http.go: 28

Here's profile of http.go https://github.com/traviscline/web_bench/blob/master/http.go https://github.com/traviscline/web_bench/blob/master/http.go: 287.36% runtime.mach_semaphore_wait 80.46% syscall.Syscall6 2.30% runtime.cas 2.30% runtime.memmove 1.15% MCentral_Free 1.15% MHeap_FreeLocked 1.15% bytes.*Buffer·WriteString 1.15% crypto/sha256.Init· 1.15% hash_remove 1.15% runtime.MCache_Alloc 1.15% runtime.MHeap_LookupMaybe 1.15% runtime.breakpoint 1.15% runtime.mach_semaphore_signal 1.15% runtime.mallocgc 1.15% runtime.xadd 1.15% syscall.Syscall It probably shows that the test is measuring goroutines scheduler and how long it takes for Go to do a syscall.