steelos.log

Linux磁盘测试的源代码,测试磁盘的读写性能

tcr3b# dt of=/dev/rdisk/dsk0b bs=64k                                    
Write Statistics:
     Total records processed: 3136 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 205520896 (200704.000 Kbytes, 196.000 Mbytes)
      Average transfer rates: 2600433 bytes/sec, 2539.485 Kbytes/sec
     Number I/O's per second: 39.679
      Total passes completed: 0/1
       Total errors detected: 0/1
          Total elapsed time: 01m19.03s
           Total system time: 00m01.95s
             Total user time: 00m16.73s

Read Statistics:
     Total records processed: 3136 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 205520896 (200704.000 Kbytes, 196.000 Mbytes)
      Average transfer rates: 2495195 bytes/sec, 2436.714 Kbytes/sec
     Number I/O's per second: 38.074
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 01m22.36s
           Total system time: 00m01.98s
             Total user time: 00m49.88s

Total Statistics:
     Output device/file name: /dev/rdisk/dsk0b (Device: RZ28, type=disk)
   Data pattern read/written: 0x39c39c39
     Total records processed: 6272 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 411041792 (401408.000 Kbytes, 392.000 Mbytes)
      Average transfer rates: 2545413 bytes/sec, 2485.755 Kbytes/sec
     Number I/O's per second: 38.840
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 02m41.48s
           Total system time: 00m03.96s
             Total user time: 01m06.61s
               Starting time: Thu Oct 29 17:14:02 1998
                 Ending time: Thu Oct 29 17:16:44 1998

tcr3b# 
tcr3b# dt of=/dev/rdisk/dsk0b bs=64k aios=64
Write Statistics:
     Total records processed: 3136 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 205520896 (200704.000 Kbytes, 196.000 Mbytes)
      Average transfer rates: 5004567 bytes/sec, 4887.273 Kbytes/sec
     Number I/O's per second: 76.364
      Total passes completed: 0/1
       Total errors detected: 0/1
          Total elapsed time: 00m41.06s
           Total system time: 00m02.75s
             Total user time: 00m18.90s

Read Statistics:
     Total records processed: 3136 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 205520896 (200704.000 Kbytes, 196.000 Mbytes)
      Average transfer rates: 3617264 bytes/sec, 3532.485 Kbytes/sec
     Number I/O's per second: 55.195
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m56.81s
           Total system time: 00m02.75s
             Total user time: 00m52.45s

Total Statistics:
     Output device/file name: /dev/rdisk/dsk0b (Device: RZ28, type=disk)
   Data pattern read/written: 0x39c39c39
     Total records processed: 6272 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 411041792 (401408.000 Kbytes, 392.000 Mbytes)
      Average transfer rates: 4197874 bytes/sec, 4099.486 Kbytes/sec
     Number I/O's per second: 64.054
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 01m37.91s
           Total system time: 00m05.53s
             Total user time: 01m11.36s
               Starting time: Thu Oct 29 17:17:43 1998
                 Ending time: Thu Oct 29 17:19:21 1998

tcr3b# 
tcr3b# scu -f /dev/rdisk/dsk0b
scu> show paths all

Path Inquiry Information:

    Bus  Initiator  HBA Vendor ID    Version  Targets  LUNs
    ---  ---------  -------------    -------  -------  ----
     0       7      NCR 53C810  02     2.5       8      8   
     1       6      DEC  N01  A11      4.7       16     8   
     2       6      DEC  N01  A11      4.7       16     8   

scu> set stats on
scu> read media bs 64k limit 200m compare off starting 0
Reading 409600 blocks (0 - 409599) on /dev/rdisk/dsk0b (RZ28)...

Total Statistics:

            Device Name/Type: RZ28 (Direct Access)
           Nexus Information: Bus 0, Target 0, Lun 0
     Total Records Processed: 3200 @ 65536 bytes/record (64.000 Kbytes)
     Total Bytes Transferred: 209715200 (204800.000 Kbytes, 200.000 Mbytes)
      Average Transfer Rates: 4869548 bytes/sec, 4755.418 Kbytes/sec
      Total Passes Completed: 1/1
       Total Errors Detected: 0/1
          Total Elapsed Time: 00m43.06s
           Total System Time: 00m02.36s
             Total User Time: 00m02.56s
               Starting time: Thu Oct 29 16:53:51 1998
                 Ending time: Thu Oct 29 16:54:34 1998

scu>