home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
BBS in a Box 5
/
BBS in a Box -Volume V (BBS in a Box) (April 1992).iso
/
Files
/
Word
/
H
/
HD Times
< prev
next >
Wrap
Internet Message Format
|
1987-05-25
|
6KB
From: BRECHER (14311)
Subject: DiskTimer results
Date: 29-OCT 03:59 Hardware & Peripherals
These are reported results from the DiskTimer program as of Oct. 28, 1986.
DiskTimer measures performance on large (32KB) data transfers and on access
time (seeking, head movement). The results are independent of the file system,
amount of free space, System and Finder versions, etc. There is no direct
translation of these results to perceived performance in ordinary Mac usage.
Multiple results from the same drive by the same submittor which vary by not
more than 5% have been combined into one report by taking the best result
for each of the three tests. Where three or more reports from different
submittors on the same drive were available, I have omitted those having
results on all three tests which fell between the best and worst shown below
for that drive.
Additional reports are welcome on hard disks not shown below or those which
have only one report so far. Please disconnect Appletalk or other networks for
the test, since network activity generates interrupts that temporarily suspend
execution of the disk driver software.
----- time in seconds -----
100 32KB 100 32KB 80 1MB
Model, Vendor [Note] Reads Writes Seeks Reported by
--------------------- -------- -------- ------ ------------
AST 2000, AST Research 25.7 25.5 4.7 Bill Steinberg
AST 4000, AST Research 24.8 24.0 1.4 Frank Brooks
Bernoulli Box 10+10 SCSI, Iomega 26.4 26.5 3.7 Netman, MacInTouch
DataFrame 20, SuperMac 33.6 33.5 6.9 Robert Wiggins
DataFrame 20, SuperMac 33.6 33.3 7.1 RONB/Delphi
DataFrame 20, SuperMac [1] 29.0 29.1 4.2 DWB/Delphi
DataFrame 40, SuperMac 13.4 13.7 3.8 Norman Fong
Easy Drive 40MB, DC Systems [2] 56.4 59.5 3.7 Tim Smith
Easy Drive 40MB, DC Systems [3] 18.2 42.3 3.7 Tim Smith
Easy Drive 40MB, DC Systems [4] 24.2 24.4 3.6 Tim Smith
Hard Disk 20, Apple 115.6 130.9 6.1 Steve Ellett
Hard Disk 20, Apple 162.5 166.7 6.1 Robert Wiggins
HardMAC+ 20MB, CMC 36.6 36.8 3.6 Pete Adams
HardMAC+ 20MB, CMC 41.8 42.7 3.7 Joseph DiGangi
HardMAC+ 20MB, CMC 18.3 18.5 3.6 C. McConathy, CMC
HD20SC, Apple (SCSI) 20.5 20.5 3.8 Norman Fong
HD20SC, Apple (SCSI) 20.6 20.6 3.7 Brian Hall
HD20SC, Apple (SCSI) 20.5 20.6 3.9 P. Williams, Apple
HyperDrive 10 (64K ROM), GCC [5] 130.8 114.0 6.1** Frank Brooks
HyperDrive 10 (64K ROM), GCC [5] 132.1 131.8 5.4** Harry Conover
HyperDrive 10 (64K ROM), GCC 25.1 25.1 7.8** L. Randy Lee
HyperDrive 20 (64K ROM), GCC 26.5 25.0 2.9 Steve Ellett
HyperDrive 2000, GCC 14.8 12.9 2.9 Harry Starr
HyperDrive FX20 (SCSI), GCC 20.5 29.6 3.8 Tom Negrino
HyperDrive FX20 (SCSI), GCC 20.5 30.5 3.8 Harry Starr
Direct Drive 20, Jasmine 24.6 120.5 3.4 Jim Clark
LoDOWN 20MB, LoDOWN 16.5 18.2 4.0 David Dunham
LoDOWN 20MB, LoDOWN 16.6 16.9 3.8 Steve Ellett
LoDOWN 20MB, LoDOWN 18.4 18.3 3.9 Michael Klickstein
LoDOWN 20MB, LoDOWN 16.5 17.0 3.5 Bill Steinberg
LoDOWN 20MB, LoDOWN 16.8 17.0 3.8 Stuart Gitlow
Mac20, Paradise (serial port) 226.4 227.1 6.7 R. W. Zehr
MacBottom (serial port), PCPC [6] 68.0 112.7 6.4 Joseph Cortney
MacBottom (serial port), PCPC [7] 68.4 113.9 10.1 Joseph Cortney
MacBottom (serial port), PCPC 68.0 112.8 9.1 Steve Ellett
MacBottom (serial port), PCPC 68.8 113.6 9.3 Robert Hafer, BCS
MacBottom HD21 (SCSI), PCPC 21.4 21.6 4.9 Steve Ellett
MacBottom HD21 (SCSI), PCPC 21.6 22.1 4.9 Linda Kaplan
MacBottom HD21 (SCSI), PCPC 21.7 21.6 4.8 Bill Steinberg
MacDrive, Tecmar 100.2 111.3 5.9 Chip Nicolais
Magic 20, Rabbit Industries 18.4 42.8 3.8 Larry Halff
MicahDrive 20 AT, MICAH 8.2 8.5 8.2 Rob Hahn
MicahDrive 20 AT, MICAH 8.2 8.2 7.2 Ted May
OverDrive 20/Prodigy 4, Levco 51.4 142.9 4.7 Harry Starr
Peak Systems 20MB 19.2 113.9 3.6 Stuart Gitlow
Photon 20, Warp Nine Engineering 23.4 28.7 3.9 Duane Williams
ProApp20, ProApp 13.3 24.0 3.3 L. Randy Lee
S-20+, Peachtree Technology, Inc. 21.6 21.6 4.9 L. Randy Lee
S-20+, Peachtree Technology, Inc. 21.5 21.5 4.8 Dolph McCranie
Notes:
[1] 512E with Levco SCSI add-on and MonsterMac RAM upgrade
[2] 1:1 interleave (as shipped)
[3] 3:1 interleave
[4] 4:1 interleave
[5] These apparantly anomalous results are unexplained.
[6] LaPine drive.
[7] MicroScience drive.
** On HyperDrives, the seek test provides meaningful results only when run
from a drawer which is contiguous for more than 1MB. Whether this was
the case for these results is not known, but the results suggest it
was not the case.