How much is Discourse affected by a faster CPU?


(Mitchell Krog) #23

So I guess these are pretty good then :grinning:


(Jeff Atwood) #24

A good starting point is the /about page; you can also refer to the memory stats I quoted in my earlier reply.


(Jeff Atwood) #25

I tried on a High CPU Digital Ocean droplet:

sysbench --test=cpu --cpu-max-prime=20000 run
sysbench --test=cpu --cpu-max-prime=40000 --num-threads=8 run

Ali Express mini-pc High CPU droplet
21.3s 24.4s
15.7s 31.6s

(in case it wasn’t obvious, lower numbers are better = faster here)

That’s… quite a bit worse than I expected. You are getting a small slice of a 16 core CPU (and it’s only Broadwell, not even Skylake!) which by definition means very low clock speeds, pushing it down to the i7-7500u levels of ~ 2.6 GHz base and 3.6 Ghz turbo.

Factoring in Kaby Lake’s generational improvements… it loses by a fair bit. Per the page, they also offer Skylake Xeons at 2.7 Ghz and I think at best that would put it on par (maybe)?