On Sat, Oct 10, 2009 at 8:34 AM, jon <trambl...@mac.com> wrote: is there a way to force it to use real memory rather than virtual?
This is, as stated, nonsensical. Your process works in its own independent virtual memory space that is mapped to physical RAM as needed by the virtual memory system. That is how it is for processes. If physical memory becomes heavily utilized (what the OS always attempts to do, unused physical RAM is wasted RAM) then you could incur swapping if no non-dirty pages exist but it isn't clear that is what you are seeing based on the information you posted and the terminology you have been using. exactly, I look at Activity monitor, "disk Activity" and i can see a > spike of disk data read/writes every 20 seconds. Use something like fs_usage or Instruments to understand what files, etc. you process is using to understand what the IO is possibly related to. If you are using WebKit, etc. I bet the disk IO you are seeing is related to the the caching WebKit, NSURLRequest, etc. can do under ~/Library/Caches. You can turn off aspects of this if you don't want any on disk caching of fetched pages, etc. to take place. If you have code doing IO to files of your own and it is highly unlikely you aren't going to be access those files again for a "long" while then you could also look at marking your access to those files as not needing file caching. It is very hard to assist you with the limited information about how your process works, what it does, what API it uses to do things, etc. ...and exactly what problem you perceive to exist. Anyway you seem to be confused on how memory is managed in an application given some of your statements. You may want to find some online resources on modern virtual memory systems and theory. -Shawn _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
