Attaching VP CPUs to real CPUS on AIX

Posted in 1998

Graham mitchell — 18 Aug 98 21:28:34 -0700 — source: Informix-list mailing list archive (1991-1998)

Hi I am experimenting with the /usr/sbin/bindprocessor command on aix 4.1.5 to pin VP CPUs to real CPUs on an 8 CPU RS6000. What real benfits does this provide ? Does it ever screw anything up ? ( I had a down system today after changing too many things at once, this being one of them + PDQ PRIORITY + DATASKIP , duh ) I am running Online 7.14 so it cannot do it for itself yet on this release. I suppose it stops mutexes and context switching but is it worth the effort? I have a system that is so swamped that if you added another 4 processors injected with smack one would hardly notice, but I have to try something MANY THANKS to those who have the time to answer !! !!!! ;) Graham Mitcehll