[ Saturday, July 31, 1999 ] Edward Schernau wrote:
> Hal Burgiss wrote:
> > 'noapic' forces linux back to non-smp interrupts.
>
> But without disabling SMP? What other impacts does this have?
Just routes all interrupts to the first CPU instead of distributing
them... a later posts in the thread shows that... compare this to
the APIC-enabled board below (note that unless interrupt-heavy in
the extreme, it's doubtable that one CPU can't keep up with the
load and spreading is necessary.)
# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 317360976 322526941 303606254 301038353 IO-APIC-edge timer
1: 88 94 103 75 IO-APIC-edge keyboard
2: 0 0 0 0 XT-PIC cascade
8: 1 0 0 0 IO-APIC-edge rtc
9: 13917998 13967812 13737924 13705736 IO-APIC-level Intel EtherExpress
Pro 10/100 Ethernet
10: 6537395 6544214 6536742 6533095 IO-APIC-level aic7xxx
11: 724347 726819 723927 722113 IO-APIC-level aic7xxx
12: 91 212 184 113 IO-APIC-edge PS/2 Mouse
13: 1 0 0 0 XT-PIC fpu
14: 0 4 1 3 IO-APIC-edge ide0
NMI: 0
ERR: 0
James
--
Miscellaneous Engineer --- IBM Netfinity Performance Development
--
=- To unsubscribe, email [EMAIL PROTECTED] with the -=
=- body of "unsubscribe linux-abit". -=
