Photoshop uses extreme amount of Ram for open files.

Y
Posted By
yemor
Dec 12, 2003
Views
410
Replies
8
Status
Closed
Opening a new file 987 x 705 pixels creates a 1.99MB file. CS uses 571MB of ram. In comparison, Photoshop 7 uses only 45MB. Opening an 80MB file causes additional problems. As soon as I add a couple of layers, my 1.67GB of ram is gone and I’m on the scratch disk. I used to open 300MB files in Photoshop 7 with no scratch disk use. Is there a problem with the new code or do I need to reconfigure something in preferences?

Regards,

Rob Holmes

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DM
dave_milbut
Dec 12, 2003
As soon as I add a couple of layers, my 1.67GB of ram is gone and I’m on the scratch disk.

actually, you’re always on the scratch disk. ps uses the scratch disk as "main memory" and RAM as "cache" memory to speed up specific operations.

your topic has been discussed repeatedly since CS was released. Search the forum for "scrath disk" and you should get some hits.
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yemor
Dec 12, 2003
Thanks Dave but I’d read most of those. I guess I should have responded there instead of starting a new thread.

I’m still not satisfied with the answers and posts. I’d really like to know what is truly happening. Graham Phillips comment "Who cares what the scratch size values say?" doesn’t satisfy me. Maybe one of the Adobe guys will explain the "ins and outs" of the new numbers.

Regards,

Rob Holmes
SB
Scott_Byer
Dec 12, 2003
I’m pretty sure I answered this thoroughly in one of the other threads. Anyways, we bumped the tile size. That had some consequences in terms of scratch size, especially in relation to patterns and brushes. If you’re looking at system reported RAM size, the system doesn’t know what CS’s RAM is used for, and it includes some of that ancillary expansion in the number. That other stuff won’t affect continuing performance much, and the change in the tile size improves performance on multiprocessor machines.

-Scott
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dave_milbut
Dec 13, 2003
the change in the tile size improves performance on multiprocessor machines.

how about hyperthreaded machines?
SB
Scott_Byer
Dec 15, 2003
how about hyperthreaded machines?

No, not many benefits to be had there.

-Scott
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dave_milbut
Dec 17, 2003
bummer.
H
Ho
Dec 17, 2003
Is the P4 EVER going to support dual processor configurations? (speaking of tangential, freely associated, flashback induced questions…)

Edit: tangential? the spell checker suggested it. you won’t believe what I thought it said.

time for bed.

goodnight.
CC
Chris_Cox
Dec 17, 2003
Sure – they call it a Xeon.

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