Date: Mon, 22 Jan 2001 16:12:01 -0700 From: Warner Losh <imp@harmony.village.org> To: Alexander Langer <alex@big.endian.de> Cc: Ian Dowse <iedowse@maths.tcd.ie>, freebsd-mobile@freebsd.org Subject: Re: ed pccards/Netgear FA-410-TX with miibus Message-ID: <200101222312.f0MNC1913142@harmony.village.org> In-Reply-To: Your message of "Mon, 22 Jan 2001 22:08:57 %2B0100." <20010122220857.A45526@cichlids.cichlids.com> References: <20010122220857.A45526@cichlids.cichlids.com> <200101211331.aa14974@salmon.maths.tcd.ie> <200101220130.f0M1Un903366@harmony.village.org>
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In message <20010122220857.A45526@cichlids.cichlids.com> Alexander Langer writes: : ed1: device timeout I've not seen this, but I'll test them harder. : They seem to work, though. I have 714 KB/s max throughout. Is this : pccard which is the bottleneck? I've maxed out at about 1500kB/s. But if you do the math, you'll see that the pcmcia bus can do 6MHz of 16bit transactions, one per clock, for DMA. That's 10-12MB/s at the high end if I'm doing the math right. If your bridge is on an ISA bus, that limits you to 4.33MHz or about 8MB/s. pio mode I think cuts this down to 1 transaction per microsecond (but that may be the ISA rate) which limits you to about 2MB/s for ISA. If memory holds, the 6MHz is just a faster ISA bus timings, which would make the high end for programmed I/O at about 3MB/s. That's about 4 times faster than what you are seeing. I just ran a couple of tests with my 3c589E card. With an mp3 playing, I got about 690kB/s ftp put preformance (averaged over four runs with the first tossed out for cache effects). I got about 998 or 999 kB/s on ftp gets. The 3c589E is a 10Mbps card, so this is actually fairly good. It is connected to a 10/100 switch and the target machine is 100Mbps fxp card. I'll test it with the FA card later and see what kinds of numbers I see. I have a linksys card that's 100Mbps as well and we'll see how that performs. IIRC, I've maxed it out at 1.5MB/s. The cardbus cards tend to max out in the 8MB/s range, but I've not even thought about investigating why it isn't hitting the 10MB/s that it should be able to hit. Too many other fish to fry :-) Ian also told me that there were some problems with the code in that it took a little while to autonegotiate and had problems with pur 10Mbps hubs. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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