Re: Excessive open gui graphics files on Mavericks
Re: Excessive open gui graphics files on Mavericks
- Subject: Re: Excessive open gui graphics files on Mavericks
- From: Quincey Morris <email@hidden>
- Date: Tue, 08 Apr 2014 20:00:42 -0700
On Apr 8, 2014, at 16:15 , Jens Alfke <email@hidden> wrote:
> IIRC, the AppKit release notes for 10.9 (or 10.8?) talk about behavior changes in +[NSImage imageNamed:]. Putting that together with what you’re saying, it may be that it now memory-maps the image data instead of copying it into heap space. That would be more memory efficient but has the side effect of consuming a file descriptor.
What the release notes for 10.9 actually say is:
> "Prior to Mac OS 10.9 images loaded through +[NSImage imageNamed:] were retained for the lifetime of the application. For applications linked on 10.9 and later this is no longer the case. Images loaded through +[NSImage imageNamed:] will still be cached for a brief time.”
which suggests less caching, not more, though file descriptor usage could still be implicated.
The other thing is, in the past when I inadvertently used up all the file descriptors, the limit was about 8000 descriptors. If we’re talking about even a couple of hundred descriptors here, it seems likely that whatever’s using descriptors indiscriminately is elsewhere in the app. (Though of course avoiding the waste of a couple of hundred is worth doing too.)
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