Hi, I'd like to hear some comments about the following: - using the local APIC timer for oneshots can be an advantage because it is programmed in practically no time, against the 3 up to tens us we discussed. - is there any advantage using the local APIC timer for a periodic scheduling? The only one I see is a sligtly reduced latency and jitter has the cpu gets its interrupt immediatly, while the periodic 8254 can be delayed by the cicling polling of the IO-APIC and by the APIC bus traffic. Can that be significant? In my opininion yes. Can anyone confirm or criticize the aboves and add some more comments. BY copying from the kernel I found programming the local APIC time for oneshot quite easy, i'm still wondering if I've really done it. Ciao, Paolo. --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/