IOtest random read/write results - Minix

[Posted February 2, 2007 by corbet]
The following results were obtained from a run of IOtest 2.31 on a Minix 3.1.2a system.
        Solid Data Systems IOtest V2.31

Sysname: Minix  Release: 3 Machine: i686 
Asynchronous writes enabled
Starting iteration count = 10000
Drive size = ld blocks (ld bytes)
There will be ~5000 reads and ~5000 writes per test

Beginning 1 process Read/Write test on /dev/c0d0p2 [10000 iterations]
   512 byte rdwr   ET=112.300 secs  IOs/second =    89  Data Rate =  0.044 MBs
  1024 byte rdwr   ET= 72.850 secs  IOs/second =   109  Data Rate =  0.109 MBs
  2048 byte rdwr   ET= 64.583 secs  IOs/second =    99  Data Rate =  0.197 MBs
  4096 byte rdwr   ET= 54.233 secs  IOs/second =    94  Data Rate =  0.377 MBs
  8192 byte rdwr   ET= 44.366 secs  IOs/second =    92  Data Rate =  0.738 MBs
 16384 byte rdwr   ET= 37.666 secs  IOs/second =    86  Data Rate =  1.391 MBs
 32768 byte rdwr   ET= 31.550 secs  IOs/second =    83  Data Rate =  2.657 MBs
 65536 byte rdwr   ET= 28.600 secs  IOs/second =    73  Data Rate =  4.689 MBs

Beginning 2 process Read/Write test on /dev/c0d0p2 [10000 iterations]
   512 byte rdwr   ET=223.300 secs  IOs/second =    89  Data Rate =  0.044 MBs
  1024 byte rdwr   ET=150.617 secs  IOs/second =   106  Data Rate =  0.105 MBs
  2048 byte rdwr   ET=126.467 secs  IOs/second =   101  Data Rate =  0.202 MBs
  4096 byte rdwr   ET=107.450 secs  IOs/second =    95  Data Rate =  0.381 MBs
  8192 byte rdwr   ET= 90.584 secs  IOs/second =    90  Data Rate =  0.723 MBs
 16384 byte rdwr   ET= 75.534 secs  IOs/second =    86  Data Rate =  1.388 MBs
 32768 byte rdwr   ET= 63.300 secs  IOs/second =    82  Data Rate =  2.648 MBs
 65536 byte rdwr   ET= 57.000 secs  IOs/second =    73  Data Rate =  4.706 MBs

Beginning 4 process Read/Write test on /dev/c0d0p2 [10000 iterations]
   512 byte rdwr   ET=446.267 secs  IOs/second =    89  Data Rate =  0.044 MBs
  1024 byte rdwr   ET=225.750 secs  IOs/second =   141  Data Rate =  0.142 MBs
  2048 byte rdwr   ET=253.167 secs  IOs/second =   101  Data Rate =  0.202 MBs
  4096 byte rdwr   ET=153.967 secs  IOs/second =   133  Data Rate =  0.531 MBs
  8192 byte rdwr   ET=132.067 secs  IOs/second =   124  Data Rate =  0.992 MBs
 16384 byte rdwr   ET=144.250 secs  IOs/second =    90  Data Rate =  1.453 MBs
 32768 byte rdwr   ET= 99.116 secs  IOs/second =   105  Data Rate =  3.383 MBs
 65536 byte rdwr   ET= 81.283 secs  IOs/second =   103  Data Rate =  6.601 MBs