Re: Core Data memory not freed after reset
Re: Core Data memory not freed after reset
- Subject: Re: Core Data memory not freed after reset
- From: Ben Trumbull <email@hidden>
- Date: Tue, 22 Sep 2009 13:59:52 -0700
On Sep 22, 2009, at 8:54 AM, Sean McBride wrote:
On 9/21/09 4:21 PM, Ben Trumbull said:
If you're using an NSArrayController in Entity mode, you can turn on
Use Lazy Fetching. You'll want to disable auto-rearrange content.
Ben,
May I ask, why turn off 'auto-rearrange content'? Is it not
compatible
with 'use lazy fetching'? Or does
'auto-rearrange content' on its own degrade performance somehow?
auto-rearrange content is very expensive. Preserve selection can also
be expensive, although not nearly as bad. But if we're talking about
a million object table view (which is a little odd, btw, most UIs have
"... and more" instead) then extraneous layout options will add up fast.
I have a vague and hazy memory that auto-rearrange content is not
compatible with use lazy fetching. If you run into trouble, file a
bug, and disable auto-rearrange content as a workaround.
- Ben
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