2007/1/20, Blaisorblade <[EMAIL PROTECTED]>:
> I.e. a SMP processor obviously, right?
That's right!
> UML does not support SMP, so it can use just one processor. This is the major
> slowdown case in your comparison.
>
> Compare make -j2 on the host and on the guest: there will still be some
> slowdown, but not such an high one. Possibly on the guest make -j1 could be
> better (it would be interesting).
host # time make -j2
real 1m54.358s
user 3m9.300s
sys 0m18.910s
guest # time make -j2
real 7m37.511s
user 2m32.770s
sys 0m23.200s
guest # time make -j1
real 7m41.003s
user 2m33.880s
sys 0m23.230s
:-( '''
>
> Also, the user time is less on UML. The fact that total time is higher is
> probably due to running with -j3 on a uniprocessor machine, and the fact that
> the user time is less is probably due to using gcc 3.3 rather than 4 (I seem
> to recall gcc 4 is slower in compilation than gcc 3).
I'm using gcc 4 on both systems.
Thank you very much.
Bye,
Flavio
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
User-mode-linux-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
