Re: Losing memory
Re: Losing memory
- Subject: Re: Losing memory
- From: James Montgomerie <email@hidden>
- Date: Mon, 28 May 2012 10:30:16 +0100
On Monday, 28 May 2012 at 03:20, Charlie Dickman wrote:
> My application is using (leaking) too much memory and eventually dies because no more can be allocated. I have used Instruments to measure the usage and leaks and have addressed those it told me about.
>
> Now, however, Instruments indicates that memory reaches a steady state (no more increases) yet the app continues to die for lack of memory.
>
> Does anyone know of a "next step" I can take to help track down this problem?
One thing I always find helpful in situations like this is to use Instruments' "Allocations" template, then, ignoring the graph and byte counts, sort the "Statistics" view at the bottom by "# Living" and see if there's anything that seems to be allocated a surprising number of times.
Often there are large numbers of small objects that are really just handles to other things - for example, objects holding on to memory-mapped files, or OpenGL textures. These objects don't contribute much to the "Allocations" count, because they themselves are very small. The things they're holding on to also don't contribute, because they're not 'allocated' in a way the instrument tracks, but they could be taking up a lot of your address space.
Jamie.
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| | >Losing memory (From: Charlie Dickman <email@hidden>) |