Date: Thu, 01 Jun 2006 14:07:44 +0200 From: Heinrich Rebehn <rebehn@ant.uni-bremen.de> To: questions@FreeBSD.org Subject: Re: Recommendation for 1000BASE-SX card? Message-ID: <447ED890.1030104@ant.uni-bremen.de> In-Reply-To: <20060531182308.41992.qmail@web33305.mail.mud.yahoo.com> References: <20060531182308.41992.qmail@web33305.mail.mud.yahoo.com>
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Danial Thom wrote: > The intel cards that use the EM driver are the > best performing cards in FreeBSD that we've > tested. We've test cards made by the same company > that use the broadcom controllers and the intel > cards are substantially better (ie use less CPU > passing the same amount of traffic). > > Be careful using on-board controllers. Usually > vendors, for some reason, don't wire them to the > pci-x bus. Most supermicro boards wire the em > controllers to the 32bit/33mhz bus and the tyan > and supermicro opteron boards we've tested wire > the broadcoms to a shared 1x PCI-E, both of which > will not only give you poor performance, but are > not capable of running full gigabit rates. > > DT > The Intel card would be an INTEL Pro1000MF, right? This would be quite expensive (~ EUR 430), but good performance and stability would warrant that. ATM, we are using the onboard controller (Broadcom BCM5704C wired to the pci-x bus). I did not have opportunity to do performance measurements, but we do have problems with our Linkpro 1000SX/1000TX converters, the 3rd of which has already died. That's why i want to give a PCI-X card with fiber interface a try. The 3com 996-SX is somewhat cheaper, does anyone have experience with that one? Thanks for all your replies :-) Heinrich
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