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dstat

versatile tool for generating system resource statistics

References

Quickstart

# Default
$ dstat
You did not select any stats, using -cdngy by default.
----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw
  1   0  99   0   0   0|  96k  172k|   0     0 | 525B  670B|4701  5520
  1   1  98   0   0   0|   0    84k|1625B 2224B|   0     0 |5132  6332
  1   1  98   0   0   0|   0     0 |1788B 2561B|   0     0 |4950  7388
  1   1  98   0   0   0|   0     0 |6795B 6639B|   0     0 |5574  8364
  1   1  98   0   0   0|   0     0 |8444B 7591B|   0     0 |5561  7976
  1   0  98   0   0   0|   0   152k|  50k   45k|   0     0 |7075  8975
……

Description

Dstat is a versatile replacement for vmstat, iostat and ifstat.

Dstat allows you to view all of your system resources instantly, you can e.g. compare disk usage in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval).

Dstat also cleverly gives you the most detailed information in columns and clearly indicates in what magnitude and unit the output is displayed. Less confusion, less mistakes, more efficient.

Dstat is unique in letting you aggregate block device throughput for a certain diskset or network bandwidth for a group of interfaces, ie. you can see the throughput for all the block devices that make up a single filesystem or storage system.

Options

Default Output

  • -a, --all Equals -cdngy ( default )
  • -c, --cpu Enable cpu stats (system, user, idle, wait, hardware interrupt, software interrupt)
  • -d, --disk Enable disk stats (read, write)
  • -n, --net Enable network stats (receive, send)
  • -g, --page Enable page stats (page in, page out)
  • -y, --sys Enable system stats (interrupts, context switches)

Advanced Output

  • -c, --cpu Enable cpu stats (system, user, idle, wait, hardware interrupt, software interrupt)
    • -C 0,3,total Include cpu0, cpu3 and total (when using -c/--cpu)
  • -d, --disk Enable disk stats (read, write)
    • -D total,hda Include total and hda (when using -d/--disk)
  • -i, --int Enable interrupt stats
    • -I 5,10 Include interrupt 5 and 10 (when using -i/--int)
  • -l, --load Enable load average stats (1 min, 5 mins, 15mins)
  • -m, --mem Enable memory stats (used, buffers, cache, free)
  • -n, --net Enable network stats (receive, send)
    • -N eth1,total Include eth1 and total (when using -n/--net)
  • -p, --proc Enable process stats (runnable, uninterruptible, new)
  • -r, --io Enable I/O request stats (read, write requests)
  • -s, --swap Enable swap stats (used, free)
  • -S swap1,total Include swap1 and total (when using -s/--swap)
  • -t, --time Enable time/date output
    • -T, --epoch Enable time counter (seconds since epoch)
  • --aio Enable aio stats (asynchronous I/O)
  • --fs, --filesystem Enable filesystem stats (open files, inodes)
  • --ipc Enable ipc stats (message queue, semaphores, shared memory)
  • --lock Enable file lock stats (posix, flock, read, write)
  • --raw Enable raw stats (raw sockets)
  • --socket Enable socket stats (total, tcp, udp, raw, ip-fragments)
  • --tcp Enable tcp stats (listen, established, syn, time_wait, close)
  • --udp Enable udp stats (listen, active)
  • --unix Enable unix stats (datagram, stream, listen, active)
  • --vm Enable vm stats (hard pagefaults, soft pagefaults, allocated, free)
  • --plugin-name Enable (external) plugins by plugin name, see PLUGINS for options

Others

  • --list List the internal and external plugin names
  • -f, --full Expand -C, -D, -I, -N, -S discovery lists
  • -v, --vmstat Equals -pmgdsc -D total

Values

  • --bits Force bits for values expressed in bytes
  • --float Force float values on screen (mutual exclusive with --integer)
  • --integer Force integer values on screen (mutual exclusive with --float)

Colors

  • --bw, --blackonwhite Change colors for white background terminal
  • --nocolor Disable colors (implies --noupdate)

Others

  • --noheaders Disable repetitive headers
  • --noupdate Disable intermediate updates when delay > 1
  • --output file Write CSV output to file
  • --profile Show profiling statistics when exiting dstat

Plugins

See man dstat section PLUGINS.