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Authored by: ash7 on Jun 10, '11 07:58:40AM

If you're at the RAM ceiling and the disk is thrashing as OS X decides what part of the mutli-gigabyte disk cache to write out, purge can be very useful to speed things up. Blindly clicking purge without knowing the RAM status can also be silly, though.

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Authored by: kiltbear on Jun 10, '11 08:02:07AM

per this person's device, evidence that you may need to purge would be having greater than half of your memory listed as Inactive:

But this could all be very situation specific.

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Disk Utility
Authored by: azrichg on Jun 10, '11 12:02:16PM

Somewhere along the line I found a suggestion that clears out that inactive memory problem. Seems every morning my inactive memory is a huge chunk of total memory.

Somewhere along the line I saw a post saying disk utility's 'repair disk permissions' fixes this. Sure enough, most of the time it does. Soon after all the Java stuff that always needs to be repaired the inactive memory drops significantly.

Wish I understood why it's happening in the first place.


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Disk Utility
Authored by: Auricchio on Jun 10, '11 07:20:52PM

I doubt Disk Utility is doing anything directly to memory. More likely, it's using a bunch of memory, which causes things to get flushed out.

EMOJO: mojo no longer workin'

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Disk Utility
Authored by: jantonc on Jun 11, '11 02:50:25PM
'mds' can and does grow extremely large, memory wise. As Spotlight indexes files the files are opened. You can also create a simple file like this

save it as 'purge.command' someplace, click on the spotlight search, type 'purge.command' followed by a return, an poof, command runs in terminal.

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