Rob, I understand that my G5 is slower than an Intel Mac. But if we use that reasoning then QuarkXPress 6.52 on my Mac utilizing the same files should be the same. It's not. 6.52 performs with these files like a Ferrari. 7.5 performs like a Chevrolet Chevette on the Interstate 5 Grapevine in California.
I was working with Craig Lanning, who according to Mike Berkow is no longer with the company. Here is Craig's last correspondance on the issue to me:
Hi Erik,
I have a response back from R&D on this issue. It turns out that, while there are some minor issues related to performance on PPC, what is really causing the behavior is the way all versions of QuarkXPress 7 calculate and draw text in layouts similar to yours that have multiple columns.
QuarkXPress is recalculating the text flow and draw information every time the text is pushed or added to. While this isn’t a problem in smaller layouts with fewer columns, in the case of a file like yours every single line on the page is recalculated and redrawn every time you enter a word or line.
In QuarkXPress 8 we changed the text engine so that it no longer recalculates the text flow every time the text is pushed to the next line. Instead, it simply pushes the text and only needs to redraw it in the new position. There is some further tweaking to be done on the draw side of things, but that is why you are seeing such slow behavior on these pages in version 7 and not in version 8.
I have a meeting with our text engineer on this issue to gather more specifics, and once this happens I’ll post a response in the forum topic and add a Knowledge Base article that covers this topic.
Craig Lanning
Solutions Manager - VKB
and a clarification:
The text engine in all versions prior to version 7 used the older OS 9 Mac Toolbox calls to calculate/render text. This was also true for version 6, where the Toolbox calls were sent through the OS X buffer before being rendered on screen. This, by the way, is why the text draw in version 6 was so “globby” at certain view percentages, but it was faster.
This recalculation probably has to do with the way the new text engine was created to take advantage of the X-Draw and Quartz anti-ailasing features, along with the ability to draw glyphs outside of box regions.
I’ll keep you posted on what I hear from the engineer later this week.
Cheers,
--Craig
I waited 2 months and then gave up. But Mike has been very helpful and at least the ball is rolling now. BTW, I sent you files. Thanks.
Erik Youngren (Click my name to email me, or the Contact button above.)Composing: Pueblo Publishers
Work Mac: G5-1.8ghz. 4gb RAM. OSX 10.4.11. QXP 7.5. Suitcase Fusion 2
Home Mac: 17" PowerBook G4 1.67GHZ DL-SD (HD), 2gb RAM, OSX 10.4.11, 320gb HD, QXP 8.12, Suitcase Fusion 2.
17" PowerBook G4 1GHZ 1gb RAM, OSX 10.4.11, 93gb HD.
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