Subject: Re: kernel->userland r/o page mapping
To: Matthew Mondor <mm_lists@pulsar-zone.net>
From: Andrew Doran <ad@netbsd.org>
List: tech-kern
Date: 03/08/2007 14:03:22
[ignoring the shared page item for a moment, sorry..]
On Thu, Mar 08, 2007 at 07:45:52AM -0500, Matthew Mondor wrote:
> $ time ./clocktest1 1000000
> 8.35s real 0.52s user 7.81s system
> $ time ./clocktest2 1000000
> 8.50s real 0.52s user 7.96s system
> $ time ./clocktest3 1000000
> 3.40s real 0.29s user 3.09s system
Those numbers don't make sense to me. What CPU and what release were
they done on? From an Athlon MP @ 1GHz running 4.99.13:
$ time ./clocktest1 1000000
1.36s real 0.17s user 1.13s system
$ time ./clocktest2 1000000
1.35s real 0.08s user 1.23s system
$ time ./clocktest3 1000000
4.15s real 0.19s user 2.55s system
Cheers,
Andrew