Many thank for the perf tool, it is pretty awesome. > On 27. Aug 2019, at 13:36, Robert Engels <reng...@ix.netcom.com> wrote: > > Ok maybe it wasn’t the cache issue, so then try this, below a certain number > of go routines given the workload the spin and cas works, beyond a certain > point it is forced into the semaphore mode which is much slower - it is also > slower than the futex used with channels. > > I’ll repeat it is OS and hardware dependent so beyond this you’ll need to do > your own more detailed investigation. I referred you to some tools that may > help. Good luck. >
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