https://bugzilla.novell.com/show_bug.cgi?id=342593
User dieter.jurzitza@t-online.de added comment
https://bugzilla.novell.com/show_bug.cgi?id=342593#c9
--- Comment #9 from Dieter Jurzitza 2007-12-05 13:00:37 MST ---
Just for my understanding - I should open up a bug report for Tyan Tiger & Tyan
Thunder mainboards with Athlon MP CPUs because they're sensitive against shared
interrupts?
Seriously, can anyone give numbers with regard to the performance improvement
on a home user system sharing interrupts against non sharing interrupts?
By the way, what happens is that you gett ERR entries in /proc/interrupts and
after a certain time the system freezes completely.
I know this behaviour from 3 otherwise fine Tyan 760MP boards and have heard
this in discussions on the net, too.
What regards configuration: you _can_ configure irq_balancer via environment
variables, telling it to leave certain irq's "as is". But this is not possible
in the openSUSE implementation as there are no corresponding options in
irq_balancer startup script today.
Even if you wanted to make a fix assignment for certain interrupts to a certain
CPU there is no way in the current package. I once promoted a scriptlett doing
the same that irq_balancer does but with configuration options through yast.
Actually I see no need for a binary here, it is enough to have a set of
appropriate
echo "X" > /proc/irq/<IRQ-NUMBER>/smp_affinity
commands at boot time.
Just to let you know.
Take care
Dieter Jurzitza
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