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Text File | 1993-11-09 | 1.3 KB | 26 lines | [TEXT/R*ch] |
- There are at least two serious disk-related bugs in the 840AV, which have been
- verified by DTS:
-
- 1) ChangedResource now flushes the resource's entire file out to disk. This is
- first noticeable during a System install, when the Installer will take several
- minutes to construct the System file. But it is most heinous during MPW Rez
- and Link. My project takes 5 to 10 times longer to build (than on an 800)
- because the entire file is written to disk hundreds or thousands of times in
- rapid succession as each resource is added to my app. Of course, this bug will
- make any program run slower if it adds, changes or deletes resources.
-
- 2) SndDisposeChannel will hit the disk for some retarded reason. Apple says
- the DSP chip is behind this. Every time a system beep is played, for example,
- you'll notice a couple of "ca-chunks" from your hard disk. This is especially
- harsh on sound-intensive applications (like games). Many games slow down to a
- jerky crawl because they typically call SndDisposeChannel after each sampled
- sound completes. The workaround is to leave a sound channel open and reuse
- it for each sampled sound until you quit or suspend your app.
-
- Apple DTS classifies these bugs as "goofinesses", and currently offers no plans
- to fix them.
-
- Todd Ouzts
-
- Author: DAYNA
-