whatsnew-jan29,2001

Linux磁盘测试的源代码,测试磁盘的读写性能

dt: End of Read pass 1, records = 3, errors = 0, elapsed time = 00m00.10s
dt: Closing file '/dev/rrz1c', fd = 3...

Total Statistics:
     Output device/file name: /dev/rrz1c (Device: BB01811C, type=disk)
     Type of I/O's performed: sequential (forward, rseed=0xf41e15)
   Data pattern read/written: 0x39c39c39 (w/lbdata, lba 0, size 512 bytes)
     Total records processed: 6 with min=4096, max=262144, incr=variable
     Total bytes transferred: 929792 (908.000 Kbytes, 0.887 Mbytes)
      Average transfer rates: 6198613 bytes/sec, 6053.333 Kbytes/sec
     Number I/O's per second: 40.000
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m00.15s
           Total system time: 00m00.00s
             Total user time: 00m00.06s
               Starting time: Mon Jan 29 14:30:08 2001
                 Ending time: Mon Jan 29 14:30:08 2001

tru64% 

==============================================================================

tru64% dt of=/dev/rrz1c bs=256k capacity=1m enable=Debug,lbdata,raw iodir=reverse      
dt: Attempting to open output file '/dev/rrz1c', open flags = 02 (0x2)...
dt: Output file '/dev/rrz1c' successfully opened, fd = 3
dt: Random data limit set to 1048576 bytes (1.000 Mbytes), 2048 blocks.
dt: Allocated buffer at address 0x140036000 of 262148 bytes, using offset 0
dt: Allocated buffer at address 0x140078000 of 262148 bytes, using offset 0
dt: Seeked to block 2048 (0x800) at byte position 1048576.
dt: Seeked to block 1536 (0x600) at byte position 786432.
dt: Record #1 (lba 1536), Writing 262144 bytes from buffer 0x140078000...
dt: Seeked to block 1536 (0x600) at byte position 786432.
dt: Record #1 (lba 1536), Reading 262144 bytes into buffer 0x140036000...
dt: Seeked to block 1024 (0x400) at byte position 524288.
dt: Record #2 (lba 1024), Writing 262144 bytes from buffer 0x140078000...
dt: Seeked to block 1024 (0x400) at byte position 524288.
dt: Record #2 (lba 1024), Reading 262144 bytes into buffer 0x140036000...
dt: Seeked to block 512 (0x200) at byte position 262144.
dt: Record #3 (lba 512), Writing 262144 bytes from buffer 0x140078000...
dt: Seeked to block 512 (0x200) at byte position 262144.
dt: Record #3 (lba 512), Reading 262144 bytes into buffer 0x140036000...
dt: Seeked to block 0 (0) at byte position 0.
dt: Record #4 (lba 0), Writing 262144 bytes from buffer 0x140078000...
dt: Seeked to block 0 (0) at byte position 0.
dt: Record #4 (lba 0), Reading 262144 bytes into buffer 0x140036000...
dt: Beginning of media detected [file #1, record #4]
dt: Exiting with status code 254...
dt: Closing file '/dev/rrz1c', fd = 3...

Total Statistics:
     Output device/file name: /dev/rrz1c (Device: BB01811C, type=disk)
     Type of I/O's performed: sequential (reverse, read-after-write)
   Data pattern read/written: 0x39c39c39 (w/lbdata, lba 0, size 512 bytes)
     Total records processed: 8 @ 262144 bytes/record (256.000 Kbytes)
     Total bytes transferred: 2097152 (2048.000 Kbytes, 2.000 Mbytes)
      Average transfer rates: 9679163 bytes/sec, 9452.308 Kbytes/sec
     Number I/O's per second: 36.923
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m00.21s
           Total system time: 00m00.00s
             Total user time: 00m00.05s
               Starting time: Mon Jan 29 14:36:36 2001
                 Ending time: Mon Jan 29 14:36:37 2001

tru64% 

==============================================================================

tru64% dt of=/usr/tmp/dt.data bs=256k iotype=random procs=2 limit=1m enable=Debug disable=pstats
dt: Started process 18206...
dt: Started process 18207...
dt: Waiting for 2 child processes to complete...
dt (18206): Attempting to open output file '/usr/tmp/dt.data-18206', open flags = 01001 (0x201)...
dt (18206): Output file '/usr/tmp/dt.data-18206' successfully opened, fd = 3
dt (18206): Random data limit set to 1048576 bytes (1.000 Mbytes), 2048 blocks.
dt (18206): Allocated buffer at address 0x14003e000 of 262148 bytes, using offset 0
dt (18206): Seeked to block 309 (0x135) at byte position 158208.
dt (18207): Attempting to open output file '/usr/tmp/dt.data-18207', open flags = 01001 (0x201)...
dt (18207): Output file '/usr/tmp/dt.data-18207' successfully opened, fd = 3
dt (18207): Random data limit set to 1048576 bytes (1.000 Mbytes), 2048 blocks.
dt (18207): Allocated buffer at address 0x14003e000 of 262148 bytes, using offset 0
dt (18207): Seeked to block 424 (0x1a8) at byte position 217088.
dt (18206): Record #1 (lba 309), Writing 262144 bytes from buffer 0x14003e000...
dt (18206): Seeked to block 1023 (0x3ff) at byte position 523776.
dt (18207): Record #1 (lba 424), Writing 262144 bytes from buffer 0x14003e000...
dt (18207): Seeked to block 104 (0x68) at byte position 53248.
dt (18206): Record #2 (lba 1023), Writing 262144 bytes from buffer 0x14003e000...
dt (18206): Seeked to block 496 (0x1f0) at byte position 253952.
dt (18207): Record #2 (lba 104), Writing 262144 bytes from buffer 0x14003e000...
dt (18207): Seeked to block 338 (0x152) at byte position 173056.
dt (18207): Record #3 (lba 338), Writing 262144 bytes from buffer 0x14003e000...
dt (18206): Record #3 (lba 496), Writing 262144 bytes from buffer 0x14003e000...
dt (18206): Seeked to block 360 (0x168) at byte position 184320.
dt (18207): Seeked to block 121 (0x79) at byte position 61952.
dt (18207): Record #4 (lba 121), Writing 262144 bytes from buffer 0x14003e000...
dt (18207): Flushing data to file '/usr/tmp/dt.data-18207'...
dt (18206): Record #4 (lba 360), Writing 262144 bytes from buffer 0x14003e000...
dt (18206): Flushing data to file '/usr/tmp/dt.data-18206'...
dt (18207): End of Write pass 0, records = 4, errors = 0, elapsed time = 00m00.23s
dt (18207): Closing file '/usr/tmp/dt.data-18207', fd = 3...
dt (18207): Attempting to reopen file '/usr/tmp/dt.data-18207', open flags = 00 (0)...
dt (18207): File '/usr/tmp/dt.data-18207' successfully reopened, fd = 3
dt (18207): Seeked to block 424 (0x1a8) at byte position 217088.
dt (18207): Record #1 (lba 424), Reading 262144 bytes into buffer 0x14003e000...
dt (18206): End of Write pass 0, records = 4, errors = 0, elapsed time = 00m00.25s
dt (18206): Closing file '/usr/tmp/dt.data-18206', fd = 3...
dt (18206): Attempting to reopen file '/usr/tmp/dt.data-18206', open flags = 00 (0)...
dt (18206): File '/usr/tmp/dt.data-18206' successfully reopened, fd = 3
dt (18206): Seeked to block 309 (0x135) at byte position 158208.
dt (18206): Record #1 (lba 309), Reading 262144 bytes into buffer 0x14003e000...
dt (18206): Seeked to block 1023 (0x3ff) at byte position 523776.
dt (18206): Record #2 (lba 1023), Reading 262144 bytes into buffer 0x14003e000...
dt (18207): Seeked to block 104 (0x68) at byte position 53248.
dt (18207): Record #2 (lba 104), Reading 262144 bytes into buffer 0x14003e000...
dt (18206): Seeked to block 496 (0x1f0) at byte position 253952.
dt (18206): Record #3 (lba 496), Reading 262144 bytes into buffer 0x14003e000...
dt (18207): Seeked to block 338 (0x152) at byte position 173056.
dt (18207): Record #3 (lba 338), Reading 262144 bytes into buffer 0x14003e000...
dt (18206): Seeked to block 360 (0x168) at byte position 184320.
dt (18206): Record #4 (lba 360), Reading 262144 bytes into buffer 0x14003e000...
dt (18207): Seeked to block 121 (0x79) at byte position 61952.
dt (18207): Record #4 (lba 121), Reading 262144 bytes into buffer 0x14003e000...
dt (18206): End of Read pass 1, records = 4, errors = 0, elapsed time = 00m00.15s
dt (18206): Closing file '/usr/tmp/dt.data-18206', fd = 3...

Total Statistics (18206):
     Output device/file name: /usr/tmp/dt.data-18206 (device type=regular)
     Type of I/O's performed: random (rseed=0xf594ce)
       Random I/O Parameters: position=0, ralign=0, rlimit=1048576
    Current Process Reported: 1/2
   Data pattern read/written: 0x39c39c39
     Total records processed: 8 @ 262144 bytes/record (256.000 Kbytes)
     Total bytes transferred: 2097152 (2048.000 Kbytes, 2.000 Mbytes)
      Average transfer rates: 5033165 bytes/sec, 4915.200 Kbytes/sec
     Number I/O's per second: 19.200
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m00.41s
           Total system time: 00m00.03s
             Total user time: 00m00.08s
               Starting time: Mon Jan 29 14:56:44 2001
                 Ending time: Mon Jan 29 14:56:45 2001

dt (18207): End of Read pass 1, records = 4, errors = 0, elapsed time = 00m00.16s
dt (18207): Closing file '/usr/tmp/dt.data-18207', fd = 3...

Total Statistics (18207):
     Output device/file name: /usr/tmp/dt.data-18207 (device type=regular)
     Type of I/O's performed: random (rseed=0xf594d0)
       Random I/O Parameters: position=0, ralign=0, rlimit=1048576
    Current Process Reported: 2/2
   Data pattern read/written: 0x00ff00ff
     Total records processed: 8 @ 262144 bytes/record (256.000 Kbytes)
     Total bytes transferred: 2097152 (2048.000 Kbytes, 2.000 Mbytes)
      Average transfer rates: 5242880 bytes/sec, 5120.000 Kbytes/sec
     Number I/O's per second: 20.000
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m00.40s
           Total system time: 00m00.01s
             Total user time: 00m00.08s
               Starting time: Mon Jan 29 14:56:44 2001
                 Ending time: Mon Jan 29 14:56:45 2001

dt: Child process 18207, exiting with status 0
dt: Child process 18206, exiting with status 0
tru64% 

==============================================================================
Ok, so I didn't have a tape drive for testing :-)
-------------------------------------------------

tru64% dt of=/dev/rfd0c bs=32k volumes=2 enable=lbdata vrecords=5 aios=4

Please insert volume #2 in drive /dev/rfd0c, press ENTER when ready to proceed: 
    [ Continuing at record #46, bytes written so far 1474560... ]

Write Statistics:
     Total records processed: 50 @ 32768 bytes/record (32.000 Kbytes)
     Total bytes transferred: 1638400 (1600.000 Kbytes, 1.562 Mbytes)
      Average transfer rates: 8004 bytes/sec, 7.816 Kbytes/sec
     Number I/O's per second: 0.244
     Total volumes completed: 2/2
      Total passes completed: 0/1
       Total errors detected: 0/1
          Total elapsed time: 03m24.70s
           Total system time: 00m00.00s
             Total user time: 00m00.01s

Please insert volume #1 in drive /dev/rfd0c, press ENTER when ready to proceed: 

Please insert volume #2 in drive /dev/rfd0c, press ENTER when ready to proceed: 
    [ Continuing at record #46, bytes read so far 1474560... ]

Read Statistics:
     Total records processed: 50 @ 32768 bytes/record (32.000 Kbytes)
     Total bytes transferred: 1638400 (1600.000 Kbytes, 1.562 Mbytes)
      Average transfer rates: 13859 bytes/sec, 13.534 Kbytes/sec
     Number I/O's per second: 0.423
     Total volumes completed: 2/2
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 01m58.21s
           Total system time: 00m00.01s
             Total user time: 00m00.16s

Total Statistics:
     Output device/file name: /dev/rfd0c (Device: floppy, type=disk)
     Type of I/O's performed: sequential
   Data pattern read/written: 0x39c39c39 (w/lbdata, lba 0, size 512 bytes)
     Total records processed: 100 @ 32768 bytes/record (32.000 Kbytes)
     Total bytes transferred: 3276800 (3200.000 Kbytes, 3.125 Mbytes)
      Average transfer rates: 9373 bytes/sec, 9.153 Kbytes/sec
     Asynchronous I/O's used: 4
     Number I/O's per second: 0.286
     Total volumes completed: 2/2
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 05m49.61s
           Total system time: 00m00.01s
             Total user time: 00m00.18s
               Starting time: Mon Jan 15 13:56:41 2001
                 Ending time: Mon Jan 15 14:02:30 2001

tru64% 

==============================================================================

meda# ./dt if=e:iot.iot bs=64k pattern=iot dsize=2k limit=1m

Total Statistics:
      Input device/file name: e:iot.iot
     Type of I/O's performed: sequential
    Data pattern string used: 'IOT Pattern' (blocking is 2048 bytes)
     Total records processed: 16 @ 65536 bytes/record (64.000 Kbytes)
     Total bytes transferred: 1048576 (1024.000 Kbytes, 1.000 Mbytes)
      Average transfer rates: 1398101 bytes/sec, 1365.333 Kbytes/sec
     Number I/O's per second: 21.333
      Total passes completed: 1/1
       Total errors detected: 0/1
          Total elapsed time: 00m00.75s
           Total system time: 00m00.01s
             Total user time: 00m00.07s
               Starting time: Mon Jan 29 14:33:49 2001
                 Ending time: Mon Jan 29 14:33:55 2001

meda#