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hey, this is Rami ... I lead HW team at Cloudflare. Great Q! .. in our case, there was a sweet spot between the number of cores, the L3 cache per core, NUMA lat
by Hardops 7y ago
hey, this is Rami ... I lead HW team at Cloudflare.
Great Q! .. in our case, there was a sweet spot between the number of cores, the L3 cache per core, NUMA latencies, mem bw per core, cost & power. The 48c gave us the best req per second per $, and it likely was due to a combination of all these things.
We have two more blogs that will come out probably today, which will shed more light on why AMD worked better for us.
- drewg123 7y agoHi, this is Drew from Netflix.. Just curious, are you running single socket rome in numa or non-numa mode? I've seen better performance in NPS=4 mode myself. We seem to see about a 7% increase when moving from NPS=1 to NPS=2 and another 7% going to NPS=4.
- Hardops 7y agoYes, we got the most perf when we used NPS=4. Stay tuned for 3 more blogs this week ... they will give deeper analysis on the perf % gains we saw and why.