Date: Fri, 11 Aug 1995 13:59:49 -0400 (EDT) From: "Jonathan M. Bresler" <jmb@kryten.Atinc.COM> To: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> Cc: Michael Smith <msmith@atrad.adelaide.edu.au>, msmith@atrad.adelaide.edu.au, john@zyqad.co.uk, freebsd-hardware@freebsd.org Subject: Re: Upgrade to my machine Message-ID: <Pine.3.89.9508111313.E6515-0100000@kryten.atinc.com> In-Reply-To: <199508111659.JAA04184@gndrsh.aac.dev.com>
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On Fri, 11 Aug 1995, Rodney W. Grimes wrote:
> XX. BAS DEC3053L Dec/Quantum 535MB 3.5"x1", SCSI-II, 5400 RPM, 9.5mS $ 195.00
rod, this is a great drive and i am very satisfied with mine ;)
it is also a loud drive. when i hit swap on it, i know immediately. the
seek motor must be a monster! ;)
> XX. MER FUJ-1606S Fujitsu M1606S 1.0GB 3.5"x1" 5400RPM 10mS $ 427.00
this is also a very nice drive, and its quiet as a mouse. i
have to listen carefully to hear it. (could be the result of years on a
motorcycle)
> balance the application accross multiple spindls _or_ you had stripping
> technology in the OS you where running.
talking of stripping, a while back, you, terry and others (if i
remember correctly) discussed disk stripping and spindle syncing a
number of drives together to produce a screamer disk system. was that
code tainted in some way ?? or may it appear in 2.1 ??
two sets of 3053's stripped would be incredible....especially at
under 40 cents a megabyte
for those interested, i have bonnie and iozone results for these
two drives below.
Jonathan M. Bresler jmb@kryten.atinc.com | Analysis & Technology, Inc.
FreeBSD Postmaster jmb@FreeBSD.Org | 2341 Jeff Davis Hwy
play go. | Arlington, VA 22202
ride bike. hack FreeBSD.--ah the good life | 703-418-2800 x346
IOZONE: Performance Test of Sequential File I/O -- V2.01 (10/21/94)
By Bill Norcott
Operating System: POSIX 1003.1-1990
IOZONE: auto-test mode
fujitsu:
MB reclen bytes/sec written bytes/sec read
1 512 2917776 1945184
1 1024 4329604 1973790
1 2048 5368709 2064888
1 4096 5835553 2064888
1 8192 8388608 1890390
dec:
1 512 3050402 1890390
1 1024 4194304 1890390
1 2048 5592405 1838599
1 4096 6391320 1917396
1 8192 7895160 2314098
fujitsu:
2 512 1838599 2294320
2 1024 2274876 2274876
2 2048 2354696 2274876
2 4096 2485513 2274876
2 8192 2739137 1667300
dec:
2 512 1931190 2462710
2 1024 2064888 2462710
2 2048 2354696 2462710
2 4096 2508742 2485513
2 8192 2532409 2418337
fujitsu:
4 512 1844917 2497074
4 1024 1777718 2497074
4 2048 1844917 2508742
4 4096 1917396 2508742
4 8192 1547178 1715242
dec:
4 512 1743087 2684354
4 1024 1641807 2810842
4 2048 1801580 2739137
4 4096 1844917 2781714
4 8192 2080895 2886402
fujitsu:
8 512 1848092 1897070
8 1024 1729052 2625285
8 2048 1654455 2625285
8 4096 1731841 2638186
8 8192 1667300 2625285
dec:
8 512 1841752 2886402
8 1024 1740262 2990924
8 2048 1748765 3033168
8 4096 1757351 3007680
8 8192 1897070 3007680
fujitsu:
16 512 1689601 2451465
16 1024 1755914 2647945
16 2048 1673798 2697843
16 4096 1644321 2687714
16 8192 1731841 2681003
dec:
16 512 1816822 3116812
16 1024 1741673 3094356
16 2048 1737446 3135012
16 4096 1726273 3072222
16 8192 1733239 3144192
bonnie:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Aspen MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
fujitsu 100 510 99.3 1892 14.4 1301 24.7 458 99.8 3873 39.1 58.0 6.1
dec 100 508 99.2 1533 10.8 1100 19.1 458 99.8 2921 26.9 53.6 5.6
/* dont jive with the iozone number very well, do they ? comments ? */
disklabels: NOTE: any misconfiguration here is my fault
any recommenations are appreciated
type: SCSI
disk: DEC
label: DSP3053LS-X442
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 511
rpm: 5400
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize cpg]
a: 32768 0 4.2BSD 1024 8192 16 # (Cyl. 0 - 15)
b: 49152 32768 4.2BSD 1024 8192 16 # (Cyl. 16 - 39)
c: 1046528 0 unused 0 0 # (Cyl. 0 - 510)
d: 1046532 0 unused 0 0 # (Cyl. 0 - 511*)
e: 20480 81920 4.2BSD 1024 8192 16 # (Cyl. 40 - 49)
f: 425984 102400 4.2BSD 1024 8192 16 # (Cyl. 50 - 257)
h: 518144 528384 4.2BSD 1024 8192 16 # (Cyl. 258 - 510)
type: SCSI
disk: sd1s1
label:
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 1041
rpm: 5400
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize cpg]
a: 81920 62 4.2BSD 0 0 0 # (Cyl. 0*- 40)
b: 81920 81982 swap # (Cyl. 40*- 80)
c: 2131126 62 unused 0 0 # (Cyl. 0*- 1040*)
d: 2131992 0 unused 0 0 # (Cyl. 0 - 1041*)
e: 614400 163902 4.2BSD 0 0 0 # (Cyl. 80*- 380)
f: 1352886 778302 4.2BSD 0 0 0 # (Cyl. 380*- 1040*)
/* sysinstall put all these partitions off cylinder boundaries.....hmmm */
dmesg:
FreeBSD 2.0-RELEASE #0: Sun Jul 30 17:43:54 EDT 1995
jmb@Aspen.Woc.Atinc.COM:/usr/src/sys/compile/ASPEN
CPU: i486DX (486-class CPU)
real memory = 7995392 (1952 pages)
avail memory = 7028736 (1716 pages)
[snip]
pci0: scanning device 0..15, mechanism=2.
chip0 <intel 82424ZX cache dram controller> on pci0:0
ncr0 <ncr 53c810 scsi> int a irq 9 on pci0:1
reg20: virtual=0xf2ab2000 physical=0xc0000000
ncr0: restart (scsi reset).
ncr0 scanning for targets 0..6 (1.12)
ncr0 waiting for scsi devices to settle
ncr0 targ 0 lun 0: type 0(direct) fixed SCSI2
ncr0 targ 0 lun 0: <DEC DSP3053LS X442>
sd0(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
sd0: 511MB (1046532 total sec), 3117 cyl, 4 head, 83 sec, bytes/sec 512
ncr0 targ 1 lun 0: type 0(direct) fixed SCSI2
ncr0 targ 1 lun 0: <FUJITSU M1606S-512 6220>
sd1(ncr0:1:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
sd1: 1041MB (2131992 total sec), 3457 cyl, 6 head, 102 sec, bytes/sec 512
chip1 <intel 82378IB pci-isa bridge> on pci0:2
ncr1 <ncr 53c810 scsi> int a irq 11 on pci0:5
reg20: virtual=0xf2ab3000 physical=0xc0001000
ncr1 scanning for targets 0..6 (1.12)
ncr1 waiting for scsi devices to settle
ncr1: restart (scsi reset).
probe0(ncr1:0:0): COMMAND FAILED (6 ff) @f0478ce0.
ncr1 targ 4 lun 0: type 1(sequential) removable SCSI2
ncr1 targ 4 lun 0: <EXABYTE EXB-4200 114 >
st0(ncr1:4:0): asynchronous.
st0(ncr1:4:0): asynchronous.
st0: density code 0x13, 512-byte blocks, write-enabled
[snip]
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