Where is IOKit memory ?
Where is IOKit memory ?
- Subject: Where is IOKit memory ?
- From: Jean-Daniel Dupas <email@hidden>
- Date: Tue, 22 Dec 2009 17:51:40 +0100
Hello,
I'm working on a video player, and I have some issue with memory leak tracking.
While the process is running, the 'real memory' and 'private memory' of the Activity monitor grow up slowly.
I used a bunch of tool to track down what cause this issue (leaks, vmmap, heap, Instrument's ObjectAlloc) but I don't see any obvious leak.
leaks does not reveal anything (no more than 20kB after 6 hours, so I think it safe to call it nothing).
heap and ObjectAlloc's reports are stable too. The *All Allocations* line see not significant increase in memory usage.
The only tools that report memory growth are vmmap and Activity Monitor.
And from vmmap's reports I can see that the only region that significantly grow is IOKit region.
Does IOKit has a special way to allocate memory that ObjectAlloc and heap are not able to track ? If yes, is there a way to track IOKit memory allocation specifically ?
Or maybe this is an expected behavior and it's safe to ignore it ?
Don't know if it's relevant, but I'm not playing the audio/video in the screen, but I'm using some SDI video card.
-- Jean-Daniel
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