Ben Greear <greearb@xxxxxxxxxxxxxxx> :
[...]
> I'm running tests at the ethernet frame (skb) level, so I would not
> expect the IP offload to help much.
>
> Do you have any performance numbers for your 8169 cards for me to
> compare against?
Gross numbers:
- with a receiving amd64, nttcp should saturate the GigaE link;
- halved bandwidth for Tx on the same setup. Untested since changes in -mm;
- 10% cpu on a 100bt link;
- TSO saves 5~7% of the cpu when it can be used.
saturated
- old host system (PII class): on 100bt, napi chews 4x10kpps (icmp) without
significant load.
[...]
> I'll get this in a bit, as I have locked up the keyboard again. This time,
> I was still using the non-NAPI code which had run over-night at around
> 5Mbps...
>
> I tried a different network setup, and noticed that the 8169 was only
> negotiating 10bt/HD. That would explain the poor performance numbers.
Call me dense but... Are the 5Mbps below in the same unit as the 30Mbps
in your previous message (are they bytes or bits) ? If yes something is
badly broken.
--
Ueimor
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