Re: [RFC][PATCH] Restricted hard realtime

From: Karim Yaghmour
Date: Thu Oct 28 2004 - 07:16:52 EST



Ingo Molnar wrote:
with -RT-V0.3 i get lower than 20 usec _maximum_ latencies during
'./hackbench 20'. (the average latency is 1 usec) So while i'm not yet
in the sub-femtosecond category, things are looking pretty good in
PREEMPT_REALTIME land :)

Just curious: what's the setup here? (CPU speed, peripherals, distro,
applications being run to load the system, etc.) You may have described
this elsewhere on LKML and I may have missed it (sorry, I just can't
read everything that comes through).

I'm assuming that the timings are measured using the tracing
functionality currently in the patches.

Thanks,

Karim
--
Author, Speaker, Developer, Consultant
Pushing Embedded and Real-Time Linux Systems Beyond the Limits
http://www.opersys.com || karim@xxxxxxxxxxx || 1-866-677-4546

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