Simple disk benchmark results

[Jon Zeeff]

Test results from*:

/bin/time dd if=/dev/disk_block_device  of=/dev/null bs=4k count=2000



Sys      Opsys        Drive    Inter   Systime    KBytes/sec

Max IIx	 AUX1.0.1     Quantum  SCSI    11.2       57

'386     Interactive  Maxtor   WD1006  17.4       400
         5.3.2                 MFM 1:1

'386	 AT&T 3.2     CDC      WD1007   9.4 	  319
25Mhz                 94186    WA2 1:1 
                               ESDI

3B2/     AT&T         CDC      MFM?     38.9      52
400

3B15     AT&T                  SMD      19.5      108

AT&T     AT&T                  ESDI     14.1      52
'386    

TI 1300  SCO 2.3.2    Mini     WD1006   25        260
20Mhz                 Scribe   RA2
                      6085     RLL?

TI 1300  SCO 2.3.2    CDC      TI SCSI  12        349
20Mhz

'386     uPort 3.0e   CDC      Compaq
16Mhz                          ST-506   19.4      146

'386     SCO 2.3.0    MiniS    Adaptec  24.3      190
		      3180E    2322  
                               ESDI  

'386     Inter        MiniS    Adaptec  13.8      522
25Mhz    2.0.2        9380E    2322
			       ESDI

'386     Inter        Newbury  Adaptec  8.1       677
25Mhz    2.0.2        9380E    1542A 
			       SCSI 

'386     uPort        Maxtor   Adaptec  10        182
16Mhz    3.0e         72MB     2372
			       RLL 1:1

Intel    SCO          CDC      DPT
'386     2.3.1                 3011/70
25Mhz                          4.5MB    5.3       157

Tandy    SCO          Quantum  Adaptec  10.5      85
16Mhz    2.2.4        Q-280    1540
'386                           SCSI

Tandy    uPort        Seagate  WD-1006  20.3      239
16Mhz    3.0e         4096     1:1
'386                           MFM

16Mhz    Inter        Maxtor   WD       17        190
'386     2.0.1                 2:1

20Mhz    Inter        Hitachi  Adaptec  12        416
'386     2.0.1                 RLL 1:1

16Mhz    SCO 2.3.1    Fujitsu  Adaptec  11.2      372
'386                  M2243as2 RLL 1:1

BULL     SPIX 31.2             SCSI     18        226
16Mhz
68020

BULL     uPort 3.0e   Maxtor   MFM      21        165
16Mhz                 120MB
'386

SUN      SUN OS                Sync     5.1       516*
3/80                           SCSI

SUN      SUN OS                "        4.2       550
Spark/1

SUN      SUN OS                "        2         521
4/110

DEC      Ultrix                SCSI               150
3100


* Note that some systems will cache the whole 8MB so you need to use a 
32MB test and divide by 4 to get accurate results if you run the test more
than once.  

I'm still interested in results for other systems.


-- 
  Jon Zeeff			zeeff at b-tech.ann-arbor.mi.us
  Ann Arbor, MI			sharkey!b-tech!zeeff