4 added 146 characters in body
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I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

$ dstat -tdD total,sda,sdb,sdc,md1 60 
----system---- -dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
     time     | read  writ: read  writ: read  writ: read  writ: read  writ
08-11 22:08:17|3549k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
08-11 22:09:17|  60k  258k:1775B   15k:  13k   63k:  15k   60k:  68B   74k
08-11 22:10:17| 176k  499k:   0    14k:  41k  122k:  41k  125k: 273B  157k
08-11 22:11:17|  42k  230k:   0    14k:9830B   54k:  14k   51k:   0    70k
08-11 22:11:52|  28k  132k:   0  5032B:5266B   33k:9479B   28k:   0    37k
  • -t for timestamps
  • -d for disk statistics
  • -D to specify the exact devices to report
  • 60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

    60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

  • not used in this example, but -c can report wait IO percentage, which in most cases is related to the CPU waiting for data from the disks.

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

$ dstat -tdD total,sda,sdb,sdc,md1 60 
----system---- -dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
     time     | read  writ: read  writ: read  writ: read  writ: read  writ
08-11 22:08:17|3549k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
08-11 22:09:17|  60k  258k:1775B   15k:  13k   63k:  15k   60k:  68B   74k
08-11 22:10:17| 176k  499k:   0    14k:  41k  122k:  41k  125k: 273B  157k
08-11 22:11:17|  42k  230k:   0    14k:9830B   54k:  14k   51k:   0    70k
08-11 22:11:52|  28k  132k:   0  5032B:5266B   33k:9479B   28k:   0    37k
  • -t for timestamps
  • -d for disk statistics
  • -D to specify the exact devices to report
  • 60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

$ dstat -tdD total,sda,sdb,sdc,md1 60 
----system---- -dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
     time     | read  writ: read  writ: read  writ: read  writ: read  writ
08-11 22:08:17|3549k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
08-11 22:09:17|  60k  258k:1775B   15k:  13k   63k:  15k   60k:  68B   74k
08-11 22:10:17| 176k  499k:   0    14k:  41k  122k:  41k  125k: 273B  157k
08-11 22:11:17|  42k  230k:   0    14k:9830B   54k:  14k   51k:   0    70k
08-11 22:11:52|  28k  132k:   0  5032B:5266B   33k:9479B   28k:   0    37k
  • -t for timestamps
  • -d for disk statistics
  • -D to specify the exact devices to report
  • 60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

  • not used in this example, but -c can report wait IO percentage, which in most cases is related to the CPU waiting for data from the disks.

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

3 added 342 characters in body
source | link

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

$ dstat -dDtdD total,sda,sdb,sdc,md1 60 
----system---- -dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
     time     | read  writ: read  writ: read  writ: read  writ: read  writ
3550k08-11 22:08:17|3549k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
08-11 22:09:17|  35k60k  196k258k:1775B 478B  15k:  14k13k   63k:  10k15k   44k60k:9694B  68B 44k  74k
08-11 22:1707B10:17| 176k  56k499k:   0    14k:  41k  122k:  41k  125k: 273B  157k
08-11 22:11:17| 59k 42k 263k 230k:   0  6729B  14k:9830B  10k 54k:  14k   51k:   0    70k
08-11 22:11:52|  19k28k  132k: 63k  0  5032B:5266B   33k:9479B   28k:   0    77k37k
  • -t for timestamps
  • -d for disk statistics
  • -D to specify the exact devices to report
  • 60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

dstat -dD total,sda,sdb,sdc,md1 60 
-dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
 read  writ: read  writ: read  writ: read  writ: read  writ
3550k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
  35k  196k: 478B   14k:  10k   44k:9694B   44k:1707B   56k
  59k  263k:   0  6729B:  10k   70k:  19k   63k:   0    77k

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

$ dstat -tdD total,sda,sdb,sdc,md1 60 
----system---- -dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
     time     | read  writ: read  writ: read  writ: read  writ: read  writ
08-11 22:08:17|3549k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
08-11 22:09:17|  60k  258k:1775B   15k:  13k   63k:  15k   60k:  68B   74k
08-11 22:10:17| 176k  499k:   0    14k:  41k  122k:  41k  125k: 273B  157k
08-11 22:11:17|  42k  230k:   0    14k:9830B   54k:  14k   51k:   0    70k
08-11 22:11:52|  28k  132k:   0  5032B:5266B   33k:9479B   28k:   0    37k
  • -t for timestamps
  • -d for disk statistics
  • -D to specify the exact devices to report
  • 60 to average over 60 seconds. The display is updated every second, but only once per 60 seconds a new line will be started.

It is available for most Linux distributions, but sometimes needs to be installed from repositories.

2 deleted 530 characters in body
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I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

---dstat -dD total-cpu-usage----,sda,sdb,sdc,md1 -60 
-dsk/sda-total----dsk/sdbsda-----dsk/sdcsdb-----dsk/sddsdc-----dsk/sde-- -net/total- ---pagingmd1-->
usr sys idl wai hiq siq| read  writ: read  writ: read  writ: read  writ: read  writ| recv  send|  in   out >writ
  2   2  91   5   0 3550k  0|277k: 144k   28k: 852k851k   62k: 852k   60k: 852k   64k: 852k   63k|   0     0 |  54B  562B>
  1   1  98   1   0   0|   0     0 :   0    28k:8192B   28k:   0    40k:   0    40k|  64B   64B|   0     0 >
  1   0  99   0   0   0|   0     0 :   0  4096B:   0  4096B:   0  4096B:   0  4096B|  70B   70B|   0     0 >
  1   0  99   0   0   0|   0  8192B:   0     0 :   0     0 :   0     0 :   0     0 |  70B    0 |   0     0 >
  0   0  99   0   0   0|   0     0 :   0    20k:   0    20k:   0  8192B:   0    20k|   0     0 |   0     0 >
  0   0  99   0   0   0|   0     0 :   0    20k:   0  4096B:   0    20k:   0    20k|  78B    0 |   0   25k  0 >82k
  1   1  98   1   0   0|   0    35k 0 196k:   0 478B   36k14k:  16k10k   28k44k:   0 9694B   48k44k:   0    48k|   0     0 |   0   1707B  0 >56k
  1   0  99   0   0   0|   0    59k 0 263k:   0  4096B6729B:  10k 0  4096B70k:  19k 0  4096B63k:   0  4096B|  64B   64B|   0     0 >77k

I like dstat. It can show statistics per disk:

----total-cpu-usage---- --dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/sdd-----dsk/sde-- -net/total- ---paging-->
usr sys idl wai hiq siq| read  writ: read  writ: read  writ: read  writ: read  writ| recv  send|  in   out >
  2   2  91   5   0   0| 144k   28k: 852k   62k: 852k   60k: 852k   64k: 852k   63k|   0     0 |  54B  562B>
  1   1  98   1   0   0|   0     0 :   0    28k:8192B   28k:   0    40k:   0    40k|  64B   64B|   0     0 >
  1   0  99   0   0   0|   0     0 :   0  4096B:   0  4096B:   0  4096B:   0  4096B|  70B   70B|   0     0 >
  1   0  99   0   0   0|   0  8192B:   0     0 :   0     0 :   0     0 :   0     0 |  70B    0 |   0     0 >
  0   0  99   0   0   0|   0     0 :   0    20k:   0    20k:   0  8192B:   0    20k|   0     0 |   0     0 >
  0   0  99   0   0   0|   0     0 :   0    20k:   0  4096B:   0    20k:   0    20k|  78B    0 |   0     0 >
  1   1  98   1   0   0|   0     0 :   0    36k:  16k   28k:   0    48k:   0    48k|   0     0 |   0     0 >
  1   0  99   0   0   0|   0     0 :   0  4096B:   0  4096B:   0  4096B:   0  4096B|  64B   64B|   0     0 >

I like dstat. It can show totals and statistics per disk and even md-devices (RAID), also can use colors for better overview:

dstat -dD total,sda,sdb,sdc,md1 60 
-dsk/total----dsk/sda-----dsk/sdb-----dsk/sdc-----dsk/md1--
 read  writ: read  writ: read  writ: read  writ: read  writ
3550k  277k: 144k   28k: 851k   62k: 852k   60k:  25k   82k
  35k  196k: 478B   14k:  10k   44k:9694B   44k:1707B   56k
  59k  263k:   0  6729B:  10k   70k:  19k   63k:   0    77k
1
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