Re: [Xenomai-core] Timing Issues on x86_32 SMP
On Tue, May 6, 2008 at 10:11 AM, Benjamin ZORES [EMAIL PROTECTED] wrote: Hi, I'm currently running an x86_32 SMP system and facing some issues with periodic tasks. I'd like to get a bit more information on a few assumptions I've made. Quick sum-up of my setup: - adeos-ipipe-2.6.23-i386-1.12-03 - xenomai-2.4.3.patch - Core 2 Duo x86_32 running in SMP Why not x86_64 ? - Linux 2.6.23.17 - Timer frequency: 1000 Hz - Tick-less mode activated (CONFIG_NO_HZ) - Xenomai Periodic Timing enabled (CONFIG_XENO_OPT_TIMING_PERIODIC) - tasks are kernel-based. I'm trying to schedule a periodic task each 8ms and I'm running into period miss (loosing from 5 up to 75, which is quite A LOT). The problem however doesn't appear on UP system (or at least when booting the kernel with maxcpus=1 ). Have you run the latency test to know if you have no hardware issue ? -- Gilles ___ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
Re: [Xenomai-core] Timing Issues on x86_32 SMP
Gilles Chanteperdrix a écrit : On Tue, May 6, 2008 at 10:11 AM, Benjamin ZORES [EMAIL PROTECTED] wrote: Why not x86_64 ? Cause I don't need 64 bits. Have you run the latency test to know if you have no hardware issue ? Do you have a quick way to start this test ? Regards, Ben ___ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
Re: [Xenomai-core] Timing Issues on x86_32 SMP
On Tue, May 6, 2008 at 11:27 AM, Benjamin ZORES [EMAIL PROTECTED] wrote: Gilles Chanteperdrix a écrit : On Tue, May 6, 2008 at 10:11 AM, Benjamin ZORES [EMAIL PROTECTED] wrote: Why not x86_64 ? Cause I don't need 64 bits. Have you run the latency test to know if you have no hardware issue ? Do you have a quick way to start this test ? cd /usr/xenomai/testsuite/latency ./runt -- Gilles ___ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
