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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!think.com!ames!news.hawaii.edu!spectra!guiyu
- From: guiyu@spectra.eng.hawaii.edu (Kui Yu Chang)
- Subject: SPEED and SPEED your IIsi
- Message-ID: <1992Nov8.114114.24899@news.Hawaii.Edu>
- Sender: root@news.Hawaii.Edu (News Service)
- Nntp-Posting-Host: spectra.eng.hawaii.edu
- Organization: University of Hawaii, Dept. of Electrical Engineering
- Date: Sun, 8 Nov 1992 11:41:14 GMT
- Lines: 37
-
- For those who still don't know, I just read something here that says by
- setting the Disk Cache in Sys7 to 768K, you get faster screen updates on
- your Macintosh IIsi because all the RAM in Bank A(where the video memory
- is also allocated)will be used-up.
-
- I did an EXPERIMENT immediately and find that the speed-up is IMPRESSIVE!!!
-
- All the machines below have similar system configuration, the IIcx uses a
- standard MacII 8.24 graphics card though.
-
- Machine Before After set Cache -> 768K Speed-up
- ======= ====== ======================= ========
- Mac IIcx 5.08 secs 5.08 secs N.A.
- Mac IIsi 8.58 secs 5.08 secs 1.69
- Mac IIci 4.63 secs 3.66 secs 1.27
-
- * All the above machines have 5 MB RAM, running the same version of System 7
- and has no INITs.
- * ALSO, ALL three machines were tested using the same size window of a
- fileserver, thus you can also see the relative screen redraws speed of diff.
- machines. I just did a SIMPLE test to time the time taken to scroll this
- window from top to bottom.
- * 8-bit graphics mode used in all cases
-
- **** RESTART your system after the cache setting to see the CHANGE ****
-
- Sincerely yours,
- Julian CHANG
- ================================================================================
- _ __ _ ADDRESS: CHANG Kui Yu
- _||__ _|_ | |_| 2440 Date Street #1002
- |_ |__ __|__ \|/|_| Honolulu, HI 96826
- |+--- | _|_ U.S.A.
- ||\/ _|_ / \ /
- \|L \ __|__ / \--- E-mail : guiyu@spectra.eng.hawaii.edu
- ================================================================================
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