Yes I have seen the same effect on my MAC. VueScan slows down Photoshop if
they are up at the same time.
You and I have the same machine constellation.
To me its seems that something is wrong with Vuescans memory handling.
Mikael Risedal
>From: "Julian Vrieslander" <julianv@mindspring.com>
>Reply-To: filmscanners@halftone.co.uk
>To: risedal@hotmail.com
>Subject: [filmscanners] Photoshop (on Mac) bogs, VueScan hogging processor?
>Date: Tue, 22 Jan 2002 00:40:48 -0500
>
>I have Photoshop 6.0.1 running on a Mac G4/867, under OS 9.2.2. This Mac
>has 1.5GB RAM (600MB allocated to PS). PS has a 10GB scratch partition
>on a second internal HD. This is usually a very quick system. But
>sometimes I see Photoshop operations slowing to a crawl. Example: I set
>a up a selection rectangle for a crop or free transform, and drag on one
>of the handles. The handle does not move with my mouse drag, and the Mac
>is unresponsive for 30 seconds or a minute. Then the screen suddenly
>redraws and the Mac is responsive again.
>
>VueScan 7.4.2 is running in the background (with a scanned image, but
>idle). If I quit VueScan, and retry the same operations in Photoshop,
>the selection handles move properly as I drag them, and the image redraws
>in a few seconds.
>
>Has anyone else seen effects like this?
>
>One possibility is that VueScan, although idled, is in a state which hogs
>CPU cycles. Mac OS versions 9.x and earlier run cooperative
>multitasking. When applications are running in background they are
>supposed to quickly yield the CPU. Another wild guess: some sort of
>activity at the driver level. I use VueScan on a Nikon LS-4000.
>
>--
>Julian Vrieslander <mailto:julianv@mindspring.com>
>
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Mikael Risedal
Photographer
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