You might first try falling back to MPS 1.1 (from MPS 1.4), if your BIOS supports it. That way you won't make one CPU handle all the interrupts. Works for me with 7.3, and I don't expect any problems with 8.0 --- Vladimir ------------------------------------------------------------------------ Vladimir G. Ivanovic http://leonora.org/~vladimir 2770 Cowper St. vladimir@acm.org Palo Alto, CA 94306-2447 +1 650 678 8014 More info: Intel Architecture Software Developer s Manual Volume 3: System Programming (1999), p 7-13: The I/O APIC is responsible for receiving interrupts generated by I/O devices and distributing them among the local APICs by means of the APIC Bus. The I/O APIC manages interrupts using either static or dynamic distribution schemes. Dynamic distribution of interrupts allows routing of interrupts to the lowest priority processors. It also handles the distribution of interprocessor interrupts and system-wide control functions such as NMI, INIT, SMI and start-up-interprocessor interrupts. Individual pins on the I/O APIC can be programmed to generate a specific, prioritized interrupt vector when asserted. The I/O APIC also has a virtual wire mode that allows it to cooperate with an external 8259A in the system. See also the kernel docs .../Documentation/i386/IO-APIC.txt and Randy Dunlap's write-up of how Linux differs from the MPS 1.4 spec http://www.xenotime.net/linux/mp-spec-1x.txt ------- "RS" == Robert Savage <dsavage@peaknet.net> writes: RS> Igor, RS> Try adding "noapic" to your GRUB kernel line arguments. RS> There are apparently several SMB motherboards which do not respond RS> correctly to the APIC code in the 2.4 kernel. Expressed another way, that RS> code doesn't properly detect or support the APIC configurations on several RS> SMP motherboards. RS> If "noapic" works for you, the similar looking problem fixed by the RS> 2.4.18-4 errata SMP kernel is something else entirely. RS> --Doc Savage RS> Fairview Heights, IL RS> On Monday, November 4, 2002 Magazinov Igor wrote: >> I'm just installed Red Hat 8.0 on my server. >> >> Problem: When using smp-kernel, server freeze on halt or reboot with >> message about "segmentation fault" and "no more processes in this >> runlevel" or something like this. >> >> I have installed the newer kernel-smp-2.4.18-17.8.0.i686.rpm, but I have >> the same result. >> >> Before it I used Red Hat 7.3. >> And I have very similar problem (may be the same?) with 2.4.18-3 >> smp-kernel, but after installing kernel-smp-2.4.18-4.i686 all problems >> were solved. ("A few bugs, including one in ext3 that could cause a >> kernel panic on SMP systems, are fixed in this kernel errata" // >> http://rhn.redhat.com/errata/RHBA-2002-085.html) >> >> I have SMP-system and using ext3 file system. :-))) >> >> Hardware: Gygabyte GS-SR102 1U Rackmount Server Platform Solution - M/B >> GA-6ETXDR (ServerSet III LE (North Bridge:NB30LE, South Bridge:OSB4), >> ATI Rage XL 8Mb, SCSI Adapter Controller LSI SYM53C1010-66 ULTRA 3 >> SCSI), 2xPIII 1000MHz Coppermine, 512 ECC SDRAM Samsung, SCSI Intel Raid >> Controller SRCU31L + 2 SCSI HDD Quantum 18 GB in RAID 1 array (mirror). >> So internal LSI adapter isn't used. >> >> Software: RH 8.0 (All drivers for absolutely all hardware were >> automatically found by Red Hat 8.0) RS> -- RS> Psyche-list mailing list RS> Psyche-list@redhat.com RS> https://listman.redhat.com/mailman/listinfo/psyche-list -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
