Date: Tue, 23 Jan 2001 10:58:06 +0100 From: Michel Talon <michel@lpthe.jussieu.fr> To: freebsd-mobile@FreeBSD.ORG Subject: Re: ed pccards/Netgear FA-410-TX with miibus Message-ID: <20010123105806.A481@lpthe.jussieu.fr> In-Reply-To: <200101222312.f0MNC1913142@harmony.village.org> References: <20010122220857.A45526@cichlids.cichlids.com> <200101211331.aa14974@salmon.maths.tcd.ie> <200101220130.f0M1Un903366@harmony.village.org> <20010122220857.A45526@cichlids.cichlids.com> <200101222312.f0MNC1913142@harmony.village.org>
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On Mon, Jan 22, 2001 at 04:12:01PM -0700, Warner Losh wrote: > 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. > This looks strange to me. I have a D-Link card Version = 4.1, Manuf = [D-Link], card vers = [DE-660] which is a plain 10Mb/s card and is recognized by the ed driver as: ed0 at port 0x240-0x25f irq 3 slot 1 on pccard1 ed0: address 00:80:c8:ba:87:88, type Linksys (16 bit) I get consistently 1.02 MB/s (each time, never any problem) on ftp transfers, which seems to me optimal for 10 Mb/s wire. I cannot say the same with the 100Mb/s cards i have in desktops ( 3Com 3c905B-TX, and Intel Pro 10/100B/100+ Ethernet) which give me around 4-5 MB/s which is poor, when they don't stall completely - this occured to me with the Intel card yesterday. The machine was tetanized. I got fxp0 timeouts in the logs, tried without success to issue some ifconfigs, rebooted and still had slow machine. Suddenly the card worked again, mystery. I have seen messages in the French freebsd newsgroup with the same symptoms. -- Michel Talon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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