On 16/01/2012 6:52 PM, Mark C wrote:
This weekend I finally downloaded Photoshop CS5 and installed it (I've
been making do with CS4 up till now). I also bumped up the RAM in my PC
from 6 gigs to 16. Anticipating blazing fast performance, I scanned some
6x7 negs and started processing them. The images themselves take up
between 550 to 650 megabytes on the disk, and have a 'pixel dimension"
in PS of 450 to 550 mb.
So... I'm not seeing any speed enhancement at all. Particularly
frustrating is when I launch a filter and things seem to just stop. For
instance, I loaded a large file and selected filter > lens correction.
About 20% of the image appears in the preview and then everything stops
for 45 to 60 seconds, then it starts up again. I fired up windows task
manager and it shows ample free memory (9 to 10 gigs 'available' and 4
to 6 gigs "free.") During the pause the processor drops to just 1 or 2
percent utilization and the system swap file does not grow. However -
photoshop does spawn 8 to 12 temp files, most of which show 0 KB in size
but a couple of which are at the 3 to 6 gigabyte size. During the pause,
I see the drive light on, so I guess everything is stopping while
Photoshop is writing to the scratch drive. But why is it writing to the
drive when it have gobs of free memory? And yes - I did check the
performance tab and PS is set to access 12.964 gigs of ram. Should be
plenty.
I'm starting to wonder if I should set up a ram disk and make it the PS
scratch disk. I'm not even sure if you can do that in WIndows 7 (last
time I used a RAM disk I was using a DOS computer....)
Any thoughts? The processor is an Athlon Phenom X4 955 and the Video
card is an NVidia Geforce 250 with 1 gig of ram, running Win 7 64 bit.
Not a hot rod system but it should be competent.
Thanks -
Mark
Mark, how much memory have you allocated to Photoshop (you do this
within Photoshop)? With that much ram, you should be able to set a very
high allocation, probably 12-14 gigs.
Also, if you really need speed, set a couple of drives up as a striped
raid. If you do this with SSDs, things go very fast.
Note, you might also be being bottlenecked by the speed of the bus, in
which case anything you do is moot, until you address that (new
motherboard).
--
William Robb
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