Laptop temperature

[James Gray]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Sebastian Gil wrote:
> Hi list
> 
> What shoud be a normal temperature for a core duo laptop?

No idea - my MacBook Pro doesn't tell me the temperature.

> I also notice that only one of the cpus arrives to 100% and the other
> one to 10-30% (sometimes CPU1, other times CPU2)
> 
> Is this normal?

If you're only running a single-threaded application, yes.  Usually the
kernel will spread threads across available cores as evenly as possible
(assuming you have installed an SMP kernel).

One thread = one core
Multiple threads = multiple cores

This is the beauty of multi-core CPU's (and multi-CPU machines) - one
core can be busy doing something, leaving the other core to handle other
tasks.  If this is implemented well you find a multi-core/cpu machine
will be more response than a single core running the same applications.

For instance, recently my MacMini (Intel CoreDuo) had a run-away program
hammering a single core.  The only reason I noticed was the fan was a
little louder than normal :P  Quick look at "top" and killed the
offending app.  Had it not been for the fan, I wouldn't have had any
indication from the system "responsiveness" that something had gone awry.

HTH,

James
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFEvYBgwBHpdJO7b9ERAvFFAKCfbfgUM6W1EOA/nDGPQLyLWD1XEgCePh4e
NfWlv680hKCP74rSHPcF7Lg=
=3k5f
-----END PGP SIGNATURE-----