Why Doesn't Photoshop relase RAM?
I had recently been working on a few images, saved them all and closed them, but had left photoshop (PS2) open. Earlier I'd had task manager open to exit a "non-responding" programme and when I switched to TM I noticed that although PS CPU usage was 0, the memory usage was 616Mb (I have 1Gb RAM). Closing PS and reopening then showed again CPU useage 0 but RAM uage only 74Mb
Opening a 130Mb psd file took RAM usage up to ~450Mb with free memory showing ~250Mb.
Opening a second psd ~110 mb took RAM uage to 616Mb with free memory down to 75Mb.
Opeinh a 3rd psd left RAM used by PS and free memory unchanged therefore I guess that PS must be using hard drives as virtual memory.
Closing down all the images, with PS idle but still showing 616Mb used.
Do I need to change a setting somewhere to get unused memory freed up? Interestingly images don't open any faster when PS is freshly opened and only using 75Mb RAM or when its been working and is using 600+Mb RAM
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