Date: Wed, 10 Jan 2001 20:07:23 +0100 (CET) From: "O. Hartmann" <ohartman@ipamzlx.physik.uni-mainz.de> To: freebsd-stable@freebsd.org Subject: massive SMP problems ... Message-ID: <Pine.BSF.4.21.0101101956170.630-100000@ipamzlx.physik.uni-mainz.de>
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Within the last thee weeks I did many changes on our central server and some of them seems not to be very "cure" to them. The first change was to exchange the older Adaptec 2940U2W against a two channel LSI Logik 21040 (64 Bit PCI connector, but fits and works with PCI 32). I changed the appropriate things for the new controller in the kernel. Then I changed console driver from VT to SC. I installed "option VESA" into the kernel config file although the system is a SMP machine and I read in the past, I think it was FBSD 3.x, that VESA and SMP turns into problems. Then i "cleaned" up the kernel config file, I pulled out some config options which seems to be "tweaking parameters to come alongside with "GENERIC" and an optimized config without ballast. Then, several days ago, I made the first cvsupdate and today the same. The end of the story is, that our server is very instable. Sometimes I get obscure errors about not working gcc, cpp ends up with a fatal error 11. The changes in the kernel seems not to be subject of suspicion, I think. It's really small, except the change VT -> SC code. I try now to extract the VESA code and leave the kernel without it to see what happens. At this stage I would like to ask the FBSD community whether there are still known problems with SMP systems and some kernel facilities? the other question is about LSI Logik 21040 controller vs. Adaptec 2940U2W controller. It seems, as of my point of view, that the LSI Logik is a little bit slower than the Adaptec controller (I did not change the drives, they are still 80MB/s LVD IBM drives). thanks for some hints or kicks ... - MfG O. Hartmann ------------------------------------------------------------------- ohartman@ipamzlx.physik.uni-mainz.de Klimadatenserver-Abteilung des IPA IT Netz- und Systembetreuung Johannes Gutenberg-Universitaet Mainz Becherweg 21 D-55099 Mainz Tel: +496131/3924662 (Maschinensaal) Tel: +496131/3924144 FAX: +496131/3923532 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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