on 17/1/2003 4:58 PM, Richard Lewisohn wrote: >> Under OSX.2.x I've tuned this down (currently 45 percent) till the >> memory usage actually suits my needs (large format image files) to >> use processor speed over sheer volume of RAM. >> >> Under PS Preferences>Memory and Cache: tune your usage. I've realized >> no spinning wheels since tuning down. >> -- > > Does that imply that you can have too much RAM? I thought more was better. > I've got 1GB of RAM on a 933mhz G4 and have allocated more than 61%. Is > less really more? > > Regards > > Richard Lewisohn
What is probably happening is that by allocating 61% of overall RAM to Photoshop, you are taking away available RAM from other applications as so are getting pageouts, where OS X has to copy memory to disk so that the current application can use more. When an application needs some memory that has already been written to disk, it has to load it back(a pagein) taking up even more time. These pageouts and pageins can take ages to perform, making the system feel slow and giving you lots of beachball time. By giving Photoshop less memory, you are freeing up memory for use by other applications, reducing the number of pageouts that have to be done. Lee Badham Bodoni Systems Ltd - Key solutions in digital imaging. Tel: 01895 825776 Fax: 01895 825994 web: http://www.bodoni.co.uk =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
