Re: Ottawa - kernel hackers ...

[Chipzz <chipzz ULYSSIS Org>]

On 27 Jun 2003, Michael Meeks wrote:

> 	time find ~/.gconf -name '*.xml' -exec cat {} > /dev/null \;
> 
> 	Which on my (warm) machine is ~8 seconds, to read 180kb of data, from
> cold it's substantially worse. It seems to me that some holistic idea of
> the scope of what the machine is being asked to do could be used at
> login to very substantially improve login / app start time.
> 
> real    0m8.736s
> user    0m0.209s
> sys     0m0.406s

chipzz Knuckles:~$ time find ~/.gconf -name '*.xml' -exec cat {} > /dev/null \;
real    0m2.964s
user    0m0.340s
sys     0m0.440s
chipzz Knuckles:~$ time find ~/.gconf -name '*.xml' -exec cat {} > /dev/null \;
real    0m0.853s
user    0m0.350s
sys     0m0.370s
chipzz Knuckles:~$ time find ~/.gconf -name '*.xml' -exec cat {} > /dev/null \;
real    0m0.703s
user    0m0.320s
sys     0m0.380s

chipzz Knuckles:~$ time find ~/.gconf -name '*.xml' | xargs cat > /dev/null
real    0m0.186s
user    0m0.030s
sys     0m0.060s
chipzz Knuckles:~$ time find ~/.gconf -name '*.xml' | xargs cat > /dev/null
real    0m0.084s
user    0m0.030s
sys     0m0.050s

And this is just a simple pentium 166 with 64MB Ram - 2.4.20.

Kind regards,

Chipzz AKA
Jan Van Buggenhout
-- 

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                 UNIX isn't dead - It just smells funny
                           Chipzz ULYSSIS Org
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