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1992-10-19
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CDBENCH version 2.4 (C) 1992 Profit Press
CDBENCH reports CD-ROM interface performance information. It will only
operate on the Profit Press MegaDEMO CD-ROM. By operating on only this
CD-ROM (pressed by a single company) more reliable results can be
obtained. The run time of this program can be up to 5 minutes and is
neccessary to produce results that can be measured accurately by the
system timer.
Information on benchmarks
1/3 stroke seek: The standard for determining the "average" seek
time of a drive. This test performs 60 seeks back
and forth across the disc.
Random seek: Performs 60 seeks to a "random" areas of the CD-ROM
under the 350 megabyte mark. The seeks are always
the same every time CDBENCH is run. (allows for
relatively short seek comparisons between drives)
1/3 stroke seek & read: Performs 60 staggered seeks (to defeat caching)
over 1/3 of the CD-ROM. After each seek a single
2k sector is read. This test will defeat some
CD-ROM drives and caching programs that ignore
seek commands.
Sustained long read: Reads 2 megabytes of consecutive sectors off
the CD-ROM in 32k blocks. This represents the
maximum data rate. Multimedia compatible drives
should read more than 150,000 bytes per second.
Sustained short read: Reads 512k of consecutive sectors in single
sector (2k) blocks. This will show how well
the buffer or cache in the CD-ROM drive handles
small but frequent accesses.
MegaSearch benchmark: A simulation of common file handling operations
used by MegaSearch Retrieval Software and MegaDOOR.
This should provide a good indication of relative
DOS random access speeds to the CD-ROM.
A database of CD-ROM results will be maintained on the Profit Press BBS.
The phone number is (602)299-0693 and we support 2400-14400 with v.32bis.
If you'd like an ASCII output of your results type CDBENCH <filename>
(preferably a filename that doesn't output to the CD-ROM!). Blanks will
be left in your output file to add information about your CD-ROM and
system configuration. Please upload your results to our BBS!
Results as of 10/16/92 include:
Drive 1/3 seek Rseek Seek/read Long read Short read MS
-------------------------------------------------------------------------------
0 Toshiba 3201B (8/89) N/A N/A 407.5 153903.9 153903.9 32.6
1 Panasonic CR-501-C 630.95 473.44 501.83 154526.9 89177.9 31.65
2 Genstar 2000 475.3 310.4 761.0 69020.2 7466.4 N/A
3 NEC CDR-80 N/A N/A 865.38 54139.24 5059.41 82.80
4 Amdek Laserdrive-1 N/A N/A 1202.38 53909.84 4985.39 121.43
5 Texel DM3021 N/A N/A 392.9 154527.0 156426.9 41.8
6 DAK/BSR $199 ext. 802.2 614.5 1046.7 68279.4 14199.5 115.3
7 Chinon ? 280.0 204.0 427.0 153903.0 144576.0 N/A
8 DAK/BSR $399 ext. 257.3 183.2 399.3 95420.4 14157.3 37.5
9 GenStar 3000i 901.1 627.3 1121.8 153903.9 134395.0 125.4
N/A = NOT AVAILABLE
Information on drives:
0 Toshiba 3201B (8/89)
- 486/33 system with a WD-7000FAST 16 bit SCSI controller
1 Panasonic CR-501-C
- 486/50 system with a CSM 8 bit SCSI controller
2 Genstar 2000
- 386/20 system with proprietary 8 bit controller
3 NEC CDR-80
- 386/40 system with Trantor 8 bit SCSI
4 Amdek Laserdrive-1
- 386/40 system with proprietary 8 bit controller
5 Texel DM3021
- 386/25 system with Always IN-2000 16 bit SCSI
6 DAK/BSR $199 ext.
- 386/20 system with proprietary 8 bit controller
7 Chinon
- Unknown model number in CompuAd computer
8 DAK/BSR $399 ext.
- 386/40 system with proprietary 8 bit controller
This is an older OEM Sony CD-ROM drive.
9 GenStar 3000i internal (Mitsumi CRMC-LUOO2S)
- 286/12 system with proprietary 8 bit controller