21 Apr
2003
21 Apr
'03
4:17 p.m.
At 03:56 PM 21/04/2003 -0400, Deepak Jain wrote:
If you go higher than 100Mb/s speeds, look for zero-copy boards, especially on the Gigabit side that FreeBSD supports. You have drastically low interrupt overhead and your speeds to move packets around increase. In my experience, its not the CPU that gets bogged down (first) but the interrupt load on a properly configured (software) box.
... The em driver now supports polling. The author of much of the polling code (luigi@iet.unipi.it) claimed to push 650Kpps on a 2.4Ghz PIV machine. YMMV based on the hardware you use, and the cards you combine. ---Mike