Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!usc!jarthur!uunet!beartrk!ceilidh!dnichols From: dnichols@ceilidh.beartrack.com (DoN Nichols) Newsgroups: comp.sys.3b1 Subject: Re: 19.2K on a 3b1 Message-ID: <1991Mar31.211207.5490@ceilidh.beartrack.com> Date: 31 Mar 91 21:12:07 GMT References: <2214@public.BTR.COM> <1991Mar27.033750.29895@ceilidh.beartrack.com> <1991Mar29.110050.20635@blilly.UUCP> Distribution: usa Organization: D and D Data, Vienna, VA. Lines: 48 In article <1991Mar29.110050.20635@blilly.UUCP> bruce@balilly (Bruce Lilly) writes: >In article <1991Mar27.033750.29895@ceilidh.beartrack.com> dnichols@ceilidh.beartrack.com (DoN Nichols) writes: >[...] >> I have my Trailblazer+ locked to 19200, and am getting about 700-800 >>both directions when communicating with a RT with AIX which is locked at >>9600, but ONLY if I kill off my ethernet before the transmission starts. If [ ... ] > >Could you please clarify "kill off my ethernet". Do you mean "ifconfig en0 >down", or a reboot without the ether driver, or do you kill -9 the >daemons, or do you blast the board with a shotgun? Well, when it kept panicing on of my 3b1's I was close to considering the shotgun :-) When I moved it back to the 7300, (with the disks and other boards, so the only difference was the main-board/power supply and the floppy-drive, it stopped panicing the system every half-hour or so. (Depending on ethernet usage) Re-boot before each scheduled uucp call would be awkward, so I use a shell script which nukes the daemons, and unloads the driver. (Essentially a pared-down version of the one under the UA choices for shutdown (and startup). I may try the "ifconfig en0 down" to see if it makes enough difference, although I suspect that the daemons are contributing enough load to be a problem, as well. Let's face it, there just isn't much muscle for handling interrupts at the rate that 19.2k requires. (I'd love for an intelligent serial card with its own dma to be produced for the system (with appropriate drivers). >And in what order do you have the drivers loaded? As follows: DEVNAME ID BLK CHAR LINE SIZE ADDR FLAGS wind 0 -1 7 -1 0x9000 0x54000 ALLOC BOUND nipc 1 -1 -1 -1 0x7000 0x360000 ALLOC BOUND xt 2 -1 14 1 0x3000 0x5d000 ALLOC BOUND tp 3 -1 9 -1 0x3000 0x367000 ALLOC BOUND cmb 4 -1 -1 -1 0x3000 0x36c000 ALLOC BOUND ether 5 -1 10 -1 0x13000 0x3de000 ALLOC BOUND DoN. -- Donald Nichols (DoN.) | Voice (Days): (703) 664-1585 D&D Data | Voice (Eves): (703) 938-4564 Disclaimer: from here - None | Email: --- Black Holes are where God is dividing by zero ---