Re: 2.6.8-rc1-mm1
From: Tim Bird
Date: Wed Jul 14 2004 - 16:51:55 EST
Andrew Morton wrote:
+preset-loops_per_jiffy-for-faster-booting.patch
Add the "lpj=" kernel boot option
I tested this...
With HZ=1000:
- normal boot: calibrate_delay() took 23 milliseconds
- specifying lpj=xxx: calibrate_delay() took 43 microseconds.
With HZ=100:
- normal boot: calibrate_delay() took 264 milliseconds
- specifying lpj=xxx: calibrate_delay() took 43 microseconds.
No adverse behaviour was observed.
This will be a big improvement for embedded folks.
Thanks,
-- Tim
=============================
Tim Bird
Architecture Group Co-Chair, CE Linux Forum
Senior Staff Engineer, Sony Electronics
E-mail: tim.bird@xxxxxxxxxxx
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