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On 3/9/08, Kent Borg <[hidden email]> wrote: > > I am thinking that Mac OS X doesn't multitask so well. > > My wife has a Macbook Pro 17", about two models back, 2 GB RAM, running > Darwin Kernel Version 8.11.1 (one major rev before Leopard, whatever cat > that is). > > I am running an rsync backup to an encrypted disk image on a USB disk. > I have niced the rsync processes, limited the rsync bandwidth to 5000 > KBytes limit (which I suppose I am not hitting). Currently the machine > is also running Itunes, Mail, Firefox, X11 Openoffice, plus all the > required stuff (Finder, Dashboard, etc.). > > Problem: Interactive performance is *terrible*. > > Running top, the idle is usually over 70%. > > Questions: > > 1) Am I trashing some key cache? (How can I avoid that? The rsync is > running slowly enough as it is, but I can slow it down more...) > > 2) Am I thrashing the disk? (How do I read the mem usage in the > Macintosh top? "wired"?, "active"?, "VM: 10.9G + 140M"? What does that > mean?, is it really running a current 11Gs of swap?? I am running far > more stuff on Ubuntu right now and I am using only 1 GB of swap with > only 1 GB of RAM.) > > 3) This seems much worse than Linux, am I tricking myself? Is > BSD/Darwin doing something stupid here??
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