Date: Wed, 14 Mar 2001 19:36:11 -0800 From: Kent Stewart <kstewart@urx.com> To: John-Mark Gurney <gurney_j@resnet.uoregon.edu> Cc: freebsd-questions@freebsd.org Subject: Re: 4.2-R installer bombs because I can't turn UDMA off... Message-ID: <3AB038AB.714DDECB@urx.com> References: <20010313233604.59613@hydrogen.funkthat.com> <3AAF3125.6153EA6B@urx.com> <20010314112930.36100@hydrogen.funkthat.com> <3AAFF67E.4D035C8A@urx.com> <20010314160337.26978@hydrogen.funkthat.com>
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John-Mark Gurney wrote: > > Kent Stewart scribbled this message on Mar 14: > > [lot of stuff deleted] > > > If you are using a 80-wire cable, you can try using an old 40-wire to > > force UDMA-33. If things like buildworld work, you are probably > > ummm.. UDMA-33 is all the VT82C586A supoprt, and that's what I'm having > issues with.. this is a K6-225 which was LONG before UDMA-66 even > entered the scene... I'm using a 40-wire cabel, etc.. > > > loading your system just fine. Because of concerns like yours, they > > I wish I could even attempt a buildworld, but I can't even get past the > frigging installer... You may not have any choice with your system. My KT7 had bios upgrades to get around some of this with the Maxtor UDMA 100 drives but it didn't help. > > > were after SOS to load the kernel and etc in PIO mode and then switch > > to dma. I don't know what the status is on that. You can also try > > if it was configurable at boot time, it wouldn't matter... you just > put the lines in loader.conf or what ever, and things work.. It wasn't and that was why people were after it to start up in pio mode. > > > using a Promise Ultra66 or Ultra100 pci card. It will probably work > > with the drive just fine. If it doesn't, trash the drive or sell it to > > someone that it won't matter to. It isn't going to get better with > > time. FWIW, I have a new AMD 900 on a KT7 mb that has a Promise card > > installed in it. > > so?? this is hardware that FreeBSD should support, or we are killing > around 50% of the hardware that is in current use.. and I don't want > to spend money and waste a PCI slot on an extra card for something I > don't need simply because FreeBSD doesn't run... If it runs on Windows and doesn't run on FreeBSD, then I blame FreeBSD. The question is did Windows dumb their drivers down to avoid the problem or what. I have source to one and not the other. You don't know what they are doing. There were people that claimed only 50% of the KT7 boards were fully functional at the stated rates. Everything else worked and the Promise card is about what it would have cost to replace it. I'm not getting build times that are fast enough to suit me and that is pointing me towards a couple of Ultra160 scsi HD's. I had to add 3 7200rpm UDMA drives on individual controllers to get the time reported for the makeworld in to the 80% region. With only one drive it hovered around 50% or worse. The AMD 900, from what I can test, is fast enough that it has to wait a lot for disk I/O from the ATA-100 drives. I could run setiathome in the background and that only affected the wall clock time by a couple of minutes. If I change to scsi HD's, the UDMA drives won't matter then. I have a VP6 with dual 866 coppermines and using raid-0 didn't help. The system time on 3-hd's on individual controllers was smaller than using the raid-0. There was less than 20 seconds difference in the wall clock for a buildworld using raid-0 and 3 individual controllers. The raid-0 was slightly faster. > > > BTW, I just noticed that I have a typo in the file name. It is > > sysctl.conf. I dropped the "f" when I typed my first response. > > don't worry, I never noticed... I was just surprised it wasn't my usually you instead of your. Kent > > -- > John-Mark Gurney Voice: +1 408 975 9651 > Cu Networking > "Thank God I'm an atheist, that'd just be confusing." -- cmc -- Kent Stewart Richland, WA mailto:kbstew99@hotmail.com http://kstewart.urx.com/kstewart/index.html FreeBSD News http://daily.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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