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I mentioned concurrency when I said that using more than one system thread didn't help. I tried varying GOMAXPROCS. It either had no effect or made everything s

I mentioned concurrency when I said that using more than one system thread didn't help. I tried varying GOMAXPROCS. It either had no effect or made everything slower. And yes, the defaults for loadtest are useless, they need to run for at least a few seconds. Your results aren't the same ones I got. Maybe it's different with Go 1.2. I have to go and check.

f2f 13y ago
the server (mqttsrv) needs GOMAXPROCS>1 for any appreciable changes in the results, otherwise we're just measuring contention in the client. i ran on a 2-core intel desktop running linux.