On Fri, Mar 26, 2021 at 08:54:23PM -0000, Stuart Henderson wrote: > On 2021-03-26, Richard Ulmer <[email protected]> wrote: > > Hi, > > it seems to me like Go (from the lang/go port) does not utilize more > > than one CPU core on OpenBSD. Let's take this program, which may be run > > with `go run main.go`: > > > > package main > > func main() { > > go work() > > work() > > } > > func work() { > > for i := 1; ; { > > i *= 1 > > } > > } > > > > The `go` directive starts a new goroutine, which I would expect to be > > put into it's own process here. However, using htop(1) I can see, that > > only one of my two cores gets load. Running the same program on Linux, > > two cores are utilized. > > > > Can someone explain to me why this is happening? Is there any way to > > make the program use both cores of my CPU? > > > > Best Regards, > > Richard Ulmer > > > > > > It works for me (checked using top and pressing H to show threads). > > Is your system actually dual-core or is it single core with hyperthreading? > (it's always worth including dmesg when asking a question, that would have > shown this) > >
FWIW, I also get two threads on two of my four CPUS (i7), running March 23rd's snapshot (amd64) with a never-before-installed go-1.16.2. --
