Date: Thu, 4 Oct 2001 13:28:30 EDT From: Bsdguru@aol.com To: hackers@freebsd.org Subject: 64bit Ethernet Card (if_sf driver) Message-ID: <137.296ca27.28edf63e@aol.com>
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I've been testing the adaptec 64044 card (if_sf driver) which is a 64bit 66Mhz 4 port ethernet. I can have come to one of two conclusions: 1) the card sucks 2) the driver sucks or both. A 32bit Dlink 4 port card outperforms it by a wide margin, as do 32bit eepro100s. "wide margin" being defined as about 40%. Given that bus resources are not easily measureable..Im quoting cpu usage for handling the same number of pps. But its pretty difficult to justify using a 64bit slot and rather expensive card with such lousy performance. I cant even justify the bus-bandwidth saving with a card that cant route more than 250Mb/s. I guess my question has to do with whether the board is just a dog or the driver needs substantial optimization. The folks at adaptec aren't dopes generally, so I cant imagine that they chose a chipset that was so inferior to the one on their 32bit adapter (which uses the same as the Dlink). Anyone with experience or ideas? Bryan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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