Server CPU only getting 1.5 to 2.5 KH/s

Question

My miner output:

HASHRATE REPORT - CPU
| ID |    10s |    60s |    15m | ID |    10s |    60s |    15m |
|  0 |  396.8 |  394.6 |  393.2 |  1 |  313.1 |  311.7 |  310.8 |
|  2 |  397.3 |  394.9 |  393.7 |  3 |  397.0 |  394.9 |  393.5 |
|  4 |  387.9 |  385.6 |  384.4 |  5 |  397.3 |  394.9 |  393.6 |
Totals (CPU):  2289.3 2276.5 2269.1 H/s
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Totals (ALL):   2289.3 2276.5 2269.1 H/s
Highest:  2295.9 H/s

I have an "intel(R) Xeon(R) silver 4210 CPU : 2.20GHz" and have 20 cores showing in the device manager.

How come its mining slower than my i5?

Answer 1

You may well have 10 cores (or 20 threads), but you only have enough cache for 5 threads to mine, and your output is only showing 3 threads mining.