Re: Xc4 memory sanity
Re: Xc4 memory sanity
- Subject: Re: Xc4 memory sanity
- From: Mark Wagner <email@hidden>
- Date: Fri, 01 Apr 2011 13:51:24 -0700
On Fri, Apr 1, 2011 at 08:31, Simon Wilson <email@hidden> wrote:
>
> I'm not running Xcode 4, but I've been putting up with similar memory usage with Xcode 3.x for a while now: Activity Monitor reports 'reasonable' memory utilization for Xcode (400-600MB, although this may not match everyone's definition of 'reasonable') but available memory steadily decreases until my 4GB MacBook Pro reports 3GB active/wired, 25% inactive and 0% free.
>
> It's totally unclear where all this memory is going as Xcode doesn't *appear* to be the culprit and no other applications are using anywhere near as much memory (with the exception of Safari which likes to make itself comfortable in 250-500MB with only 3 tabs open.)
>
What *should* be happening is that the "missing" memory is being used
for disk cache, to be freed up when applications have a need for it.
> At this point the machine starts performing like a dog, even though the remaining inactive memory is theoretically available to any process that wants it. Starting my app from Xcode takes 10-20 seconds (normally 2-3) and starting the debugger takes even longer. And forget starting Photoshop to do some quick design work...
>
In practice, Apple doesn't seem to have gotten it quite right.
--
Mark
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