Date: Fri, 31 Mar 2000 17:32:56 +0200 (CEST) From: Bart van Leeuwen <bart@ixori.demon.nl> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Arun Sharma <adsharma@sharmas.dhs.org>, freebsd-smp@freebsd.org Subject: Re: SMP and vn Message-ID: <Pine.BSF.4.21.0003311722590.1567-100000@isengard.ixori.demon.nl> In-Reply-To: <Pine.BSF.4.21.0003291940180.359-100000@isengard.ixori.demon.nl>
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Well.. it looks 'slightly better' as in that it doesn't seem to crash as often as it did... but it still does 'freeze' completely. One thing I noticed is that the ATA drivers don't seem to care at all about disabling UDMA in my bios, and it doesn't seem to care at all about whatever PIO/DMA modes I set for devices.. is this as expected? At least, with UDMA disabled I see: ad0: 6149MB <QUANTUM FIREBALL EX6.4A> [13328/15/63] at ata0-master using UDMA33 ad2: 19470MB <IBM-DJNA-352030> [39560/16/63] at ata1-master using UDMA33 (will have to reboot with a boot -v for the pio and dma settings, but they are not 2/0 as set in the bios) Oh well... this isn't dos, so I can imagine somehow that it doesn't care at all about whatever I put in my bios.... Anyway, looks like I'll have a small cluster of RS/6000 boxes to 'play with' this weekend so I'm afraid I won't have time to look into xfree 3.3.5... maybe I should just get a prebuilt version.. ;-) Bart van Leeuwen ----------------------------------------------------------- mailto:bart@ixori.demon.nl - http://www.ixori.demon.nl/ ----------------------------------------------------------- On Wed, 29 Mar 2000, Bart van Leeuwen wrote: > Heh, I just disabled the ATA DMA stuff, lets see how this works > out.. (will know in an hour or so... ;-) > > I didn't get to rebuilding XFree 3.3.5 yet (it complains about something > during the build, and didn't have time to figure out why yet) so that try > will come later this week or so. > > Bart van Leeuwen > ----------------------------------------------------------- > mailto:bart@ixori.demon.nl - http://www.ixori.demon.nl/ > ----------------------------------------------------------- > > On Wed, 29 Mar 2000, Matthew Dillon wrote: > > > :> F2) before you leave for the day. If it crunches while you are > > :> accessing it remotely, when you come in the next day you should see a > > :> DDB prompt and a panic message and be able to 'trace', 'ps', and then > > :> 'panic' the system. > > : > > :I've had freezes when not running X and it didn't drop into DDB on the > > :console. Will adding more asserts in suspected places help ? > > : > > : -Arun > > > > Depends how good your suspicions are. > > > > I think there are two possibilities: > > > > First, since the disk light is left on there is a good chance that the > > problem is in the UDMA66 code, try compiling the kernel up with that > > disabled (i.e. if you have the ATA_ENABLE_ATAPI_DMA kernel config > > option set, comment it out and recompile). > > > > Second, when your machine locks up and you aren't in X, try CTL-ALT-ESC > > to break into DDB and, if that works, type 'trace' and 'ps' and we may > > be able to determine where it locked up. > > > > -Matt > > Matthew Dillon > > <dillon@backplane.com> > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-smp" in the body of the message > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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