Why is OS X swapping with inactive memory available?
Why is OS X swapping with inactive memory available?
- Subject: Why is OS X swapping with inactive memory available?
- From: Thomas Backman <email@hidden>
- Date: Sun, 11 May 2008 18:51:20 +0200
I've got a Macbook Pro C2D, with 3GB RAM, running OS X 10.5.2. Long
story short, I've got about 800MB of inactive memory, and still it's
swapping like crazy, throwing 20 second freezes into my typing, etc.
Unusable. But why is it swapping, when there is so much memory
available? I just don't get it. Isn't inactive memory by definition
easy to free? If so, why isn't it taking advantage of it, instead of
acting as if I'm actually *using* the whole 3 gigs?
I recently upgraded from 2GB to 3GB to be able to use VMware Fusion
better. Well, I can't. Despite adding 1024MB of memory, I couldn't
even increase the VM from 512 to 768MB. Where did the rest of my new
gigabyte go? I can't say it feels any faster at all.
As of right now, I've got about 1.65GB active memory, 520MB wired, and
over 800MB inactive. Despite all that inactive memory, I've got over
500MB of page outs!
I don't pretend to understand paging very much at all, except I do
know that excessive paging (as in 500MB in 10 minutes) feels EXTREMELY
slow.
Is this by design, and if so, why...? If not, well, why does it
happen? :)
Regards,
Thomas
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