Date: Wed, 15 Mar 2000 19:32:07 -0100 From: Bart van Leeuwen <bart@ixori.demon.nl> To: freebsd-smp@freebsd.org Subject: SMP and vn Message-ID: <38CFF347.865CFD63@ixori.demon.nl>
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Hi all, I wanted to build me a release, so I followed the documentation and created a kernel with the vnode pseudo device. After adding that, I decided to do a make buildworld, which caused a complete freeze of my machine after a while. Now this might have happened for some onscure, unrelated reason, but repeating this a few times with and without the vn pseudo device got a 1 on 1 relationship between those freezes and having the pseudo device in my kernel. I left the thing in my kernel to see if it might cause any other simular problems (a complete freeze where only poweroff/reset button still works doesn't tell that much about what is going wrong, does it? ;-) This ended with a complete freeze when my xscreensaver was displaying some opengl screensaver. Reboot, startx, try quake III, complete freeze within 5 minutes (but when repeating this, it happens at random moments) In any case, it looks to me that SMP + vnode + heavy load == freeze. This all runs on an Asus p2b-ds with 2x Pentium II 333, 196mb memory, using both ide and scsi disks, mga g400 graphics, sb awe64 (isa) sound card. Looking at this config I found 2 things: - isa dma with soundblaster can be a problem in certain situations. - I do not have the latest bios from ASUS. Those 2 issues are easy to eliminate, but the fun is that this machine never showed such behavior before, so I would expect those freezes to be unrelated to those 2 potential issues. Is there anyone with simular experience? is there anything documented about using vn on smp systems? Related to this, is there any possibility to get vesa support working on smp systems? (if only coz a 320x200 'splash' screen looks lousy while my cheap as dirt k6 system comes up with a nice 1024x768 splash, but more serously, I'd love to have 132 colums on a console on this machine ;-) I have seen that VESA + SMP is currently unsupported (and verified that it indeed does not work well ;-) Is it unsuported because of technical problems? or because it simply was never made to work well? regards, Bart. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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