12/12/03 Evie Leder :

>Does anyone know what kind of performance hit there is by running classic 
>all the time? 

The performance hit probably depends on the amount of memory you have and 
the current load of the system: it may be minimal with a lot of RAM and 
will increase as other applications require memory. It's hard to guess 
the RAM requirement of OS X programs; just assume Classic requires a lot, 
in the like of what a separate Mac OS 9 system would use.

I was very happy running Classic & Emailer constantly on my iBook 366 
with 320 MB RAM, but would have preferred 512 MB if the clamshell iBooks 
handled that.

The idle CPU load may not be an issue, as Classic puts itself to sleep 
when idle (or at least is supposed to when no Classic app is open, which 
may or may not include faceless background apps).

On the other hand you may unexpectedly feel a performance *increase* in 
some Classic apps using network connections or AppleScript, or just by 
keeping the whole OS responsive while a Classic high-priority process 
stalls the Classic GUI.


----
VRic

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