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MemSpeed.Doc
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1996-02-06
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Short: Small utility to determine speed of RAM.
Author: frank@phoenix.owl.de (Frank Wille)
Uploader: frank@phoenix.owl.de
Version: 1.0
Type: util/cli
Requires: OS2.04
This small CLI utility displays the maximum speed in kBytes per
second to read from or write to your RAM. MemSpeed will do a test
in Chip- and in Fast-RAM using a buffer of 128k. The speed test
routine is a loop of 64 MOVE.L instructions running in Supervisor
Mode with interrupts disabled, which will fit in all instruction
caches from 68020 on.
MemSpeed v1.0 is Freeware.
Here are some results I got by using MemSpeed on my
A4000/040 (instruction cache was always enabled):
ScreenMode DataCache ChipRAM r/w FastRAM r/w (MB/sec)
CyberGFX on 4.6 / 4.6 11.3 / 6.0
off 4.6 / 4.6 10.7 / 10.7
720x512x8 on 1.3 / 1.3 11.3 / 6.0
(DblPAL) off 1.3 / 1.3 10.7 / 10.7
320x256x8 on 3.5 / 3.5 11.3 / 6.0
off 3.5 / 3.5 10.7 / 10.7
320x256x4 on 4.3 / 4.3 11.3 / 6.0
off 4.3 / 4.3 10.7 / 10.7