Re: 2.6.8-rc1-mm1

[Tim Bird]

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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