[filmscanners] Re: Photoshop freezing

["Brad Davis" <DocBradd@mac.com>]

On 17/7/03 10:34, "LAURIE SOLOMON" <laurie@advancenet.net> wrote:

> I believe that your so-called clue is a normal condition and one of the
> reasons why one requires a large scratch disk of unfragmented contiguous
> space usually 3-5 times the size of one's actual file size.  You do need to
> turn virtual memory on so as to use the scratch disks.  The 120MB of
> physical RAM is really very little in the scheme of things with contemporary
> machines having up to 3GB of physical RAM with as much as 1GB asigned to
> Photoshop. However, unless you are working with 3 or 4 100MB plus files
> during a session, it should not cause the Photoshop to freeze once you turn
> the virtual memory back on and assign Photoshop a sccratch disk space one a
> hard drive with some free contiguous unfragmented space of around 100MB or
> more ( better yet assign the scratch disk itsown dedicated hard drive or, at
> least a dedicated partition on a hard drive).
>
>> There is 304MB installed RAM of which 120,000MB are assigned to Photoshop.
>
> I assume that the 120,000MB iws an error and should read 120MB; otherwise
> that is your problem, you are trying to do the impossible. :-)

Maybe not impossible, just difficult and time consuming.  I recently tried
to do some work on a PC with 256 RAM, and after scanning a 100 Meg file, any
attempt to work with it was very slow (as in many minutes) as photoshop was
paging material out to the disk at a frightening rate.  It took minutes to
do the simplest thing.  If there is only 120 Meg available to photoshop, it
will page (and tell you if you don't have enough disk space - er, I think it
is the OS that tells you...  I normally use a G$ with dual processors and
512 meg of RAM and it is very fast (I made 80% of the RAM available to
Photoshop.  I can get it to page too, but I have to work at it, and I prefer
not.  The point is that photoshop isn't necessarily "freezing, it is just
busy with the writes to and reads from the disk.

As Laurie implied, *give it more RAM*!
Brad

>
> You also might check to see if the files which are to be saved are flattened
> files since sometimes undesr some settings one cannot save unflattened
> files;  files that are 42 bit as oppposed to 24 bit also cannot be saved to
> a TIFF format.
>
>
> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Maaki
> Sent: Thursday, July 17, 2003 4:24 AM
> To: laurie@advancenet.net
> Subject: [filmscanners] Photoshop freezing
>
>
> I've hired a graphic designer to scan and colour correct some
> transparencies using Photoshop, and I have set her up on a new Epson
> 3200 scanner, and a PowerMac 9500 upgraded with a G3/400/1MB card,
> and running Mac OS 9.1. (I had never used Photoshop myself, but I
> seem to be the tech support person for all the Macs around here).
> There is 304MB installed RAM of which 120,000MB are assigned to
> Photoshop. Virtual Memory is off.
>
> Today Photoshop kept freezing. It seemed to work fine for the first
> file opened and adjusted, but it always froze during the "Save  As"
> of the second  file. The files are in the range of 20 to 40 MB in
> size.
>
> Following is what happens. Open a Photoshop TIFF file, make some
> adjustments and save it as under a new title and then close it. Then
> when another TIFF file is opened, everything is the same up until the
> "Save As" operation. When the dialog appears asking whether to save
> as a "PC" or "Macintosh" file, the program freezes as soon as
> "Macintosh' is clicked leaving a white space where the dialog had
> been.
>
> Any ideas?
>
> CLUE
> (A) I've checked with Memory Mapper, and find that Photoshop does
> not release the extra memory a file used when that file is closed. It
> hass to be quit and re-launched in order to release the memory.
>
> Maaki
>
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