The graphs below represent a performance comparison
between software programs designed to accelerate CD ROM performance.
Test were performed on a Performa 6300. Testing was done using
MacBench 3.0. For it's CD ROM tests MacBench
profiles 5 popular CD ROM based software programs including
Encarta Multimedia Encyclopedia, Myst and Passage to Vietnam
and applies these profiles to the subsystem being tested.
See this description
of what MacBench tests and how. Longer bars equals faster
dTime is a disk based caching program. "AF"
refers to "Acceleration File" or the size of the
disk cache in megabytes. The optimal size of the acceleration
file will vary depending on the CD ROM being accessed and
the Mix score should be seen as just an example of how size
can effect performance. The individual tests give you a more
explicit picture of the caching process at work. During the
first test the information is written to cache and during
the second test the information is drawn from cache. Unexplained
is the poor performance during sequential read of small bytes
of data which was not true during random read of the same
**In recent Macworld review CD ROM acceleration
software was panned in**
general and dTime in particular. As always it is a good idea
to get multiple perspectives when considering a purchase.
CD ROM Acceleration Disk Mix
Acceleration at 512 bytes
Acceleration at 32K Random Read
Acceleration at 128K Sequential Read