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Poor performance on 10g network

Davvo

Patron
Joined
Jul 12, 2022
Messages
486
When Receive Side Scaling (RSS) is enabled, all of the receive data processing for a particular TCP connection is shared across multiple processors or processor cores. Without RSS, all of the processing is performed by a single processor, resulting in inefficient system cache utilization.
Looks like your issue was the CPU.
 

egghog

Dabbler
Joined
Sep 17, 2022
Messages
18
Looks like your issue was the CPU.
That's odd, because it sounds like enabling RSS would improve performance. But in my case, disabling it improved it.

Another weird thing happened! I disabled interrupt moderation on the NIC in Windows, and the read speed increased to over 800MB/s. However, write speed dropped back down to 250MB/s.
I imagine I’d have to do something on the NAS side to correct this. Is interrupt moderation recommended?
 

Davvo

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Jul 12, 2022
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