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- 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.
-