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Text File | 1991-03-06 | 1.2 KB | 31 lines | [TEXT/GEOL] |
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- Item 8031586 10-Dec-90 15:40PST
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- From: AUST0134 Jam Software Sydney,IVR
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- To: MACAPP.TECH$ MacApp Technical
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- cc: D2086 Efficient Field Svc, C Faith,PRT
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- ------------------------------------------------------------------------------
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- Sub: Re [?+1] cache
-
- I found Curtis' discussion on the cache and timing very interesting. Some time
- ago I had found also found that 128K seemed to be an optimal size for the cache
- (8M IIci, 300M Wren IV, sys 6.05). After reading Curtis' link, I tried turning
- off the cache, and found that my app does indeed perform its disk access some
- 20% faster with the cache off.
-
- I then went back to MPW, and tried a build with the cache off. Here there was
- a significant performance degradation with no cache. Compiling was some 20%
- slower, linking went from 205s with a 128K cache to 255s with no cache and rez
- went from 27s to 47s. The most striking thing I found was that the MPW Set
- command took a looooong time with the cache off, and there are a lot of Set's
- in the MABuild process. I wouldn't advise anybody do an MABuild with no cache.
-
- Tseung Cheung
- JAM Software Pty Ltd
- ALink AUST0134
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