Carl-Daniel Hailfinger <[EMAIL PROTECTED]> :
[...]
> Performance with nttcp was approximately at 135 MBit/s in
> both directions.
>
> Both cards were connected directly with a CAT5e cable.
> Enabling/disabling NAPI didn't have any measurable effect.
>
> Are these results expected, and if so, is there any card
1 - I get more than the 141 Mbit/ on an old PII;
2 - can you check with lspci -vvx if there is a difference
between the two devices (latency or such) ? The cards
are built around the same chipset. I see no reason why
one card could be slower than the other;
3 - please send:
- complete dmesg and vmstat 1 output during test
- .config
- ethtool -s eth0
> which delivers more reasonable performance? If the cards
> should deliver higher performance, do you have any patch
> or any tuning tip I can test?
Can you check 'top' output during test ?
Any difference if you renice ksoftirqd like crazy ?
--
Ueimor
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