dstat

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

安装

yum install -y dstat

Help

# dstat --help
Usage: dstat [-afv] [options..] [delay [count]]
Versatile tool for generating system resource statistics

Dstat options:
  -c, --cpu              enable cpu stats
     -C 0,3,total           include cpu0, cpu3 and total
  -d, --disk             enable disk stats
     -D total,hda           include hda and total
  -g, --page             enable page stats
  -i, --int              enable interrupt stats
     -I 5,eth2              include int5 and interrupt used by eth2
  -l, --load             enable load stats
  -m, --mem              enable memory stats
  -n, --net              enable network stats
     -N eth1,total          include eth1 and total
  -p, --proc             enable process stats
  -r, --io               enable io stats (I/O requests completed)
  -s, --swap             enable swap stats
     -S swap1,total         include swap1 and total
  -t, --time             enable time/date output
  -T, --epoch            enable time counter (seconds since epoch)
  -y, --sys              enable system stats

  --aio                  enable aio stats
  --fs, --filesystem     enable fs stats
  --ipc                  enable ipc stats
  --lock                 enable lock stats
  --raw                  enable raw stats
  --socket               enable socket stats
  --tcp                  enable tcp stats
  --udp                  enable udp stats
  --unix                 enable unix stats
  --vm                   enable vm stats

  --plugin-name          enable plugins by plugin name (see manual)
  --list                 list all available plugins

  -a, --all              equals -cdngy (default)
  -f, --full             automatically expand -C, -D, -I, -N and -S lists
  -v, --vmstat           equals -pmgdsc -D total

  --bits                 force bits for values expressed in bytes
  --float                force float values on screen
  --integer              force integer values on screen

  --bw, --blackonwhite   change colors for white background terminal
  --nocolor              disable colors (implies --noupdate)
  --noheaders            disable repetitive headers
  --noupdate             disable intermediate updates
  --output file          write CSV output to file
  --profile              show profiling statistics when exiting dstat

delay is the delay in seconds between each update (default: 1)
count is the number of updates to display before exiting (default: unlimited)

使用

  • dstat -cdngy 分别显示cpu、disk、net、page、system信息,默认是1s显示一条信息
  • dstat 5 每5秒显示一条
# 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   1  98   0   0   0|4406B 3458B|   0     0 |   0     0 |  70  1587
  2   2  96   0   0   0|   0     0 | 132B  158B|   0     0 | 867  1776
# dstat -tsp --socket --fs
----system---- ----swap--- ---procs--- ------sockets------ --filesystem-
     time     | used  free|run blk new|tot tcp udp raw frg|files  inodes
10-08 18:22:56|   0     0 |0.0   0 0.4|513  22   1   0   0| 1856  21319
10-08 18:22:57|   0     0 |3.0   0 1.0|513  22   1   0   0| 1856  21319

说明:

  • cpu
    • hiq:硬中断次数。
    • siq:软中断次数
  • system
    • int:分别为系统的中断次数(interrupt)
    • csw:上下文切换(context switch)

参数

# dstat --list
internal:
	aio, cpu, cpu24, disk, disk24, disk24old, epoch, fs, int, int24, io, ipc, load, lock, mem, net, page,
	page24, proc, raw, socket, swap, swapold, sys, tcp, time, udp, unix, vm
/usr/share/dstat:
	battery, battery-remain, cpufreq, dbus, disk-tps, disk-util, dstat, dstat-cpu, dstat-ctxt, dstat-mem, fan,
	freespace, gpfs, gpfs-ops, helloworld, innodb-buffer, innodb-io, innodb-ops, lustre, memcache-hits,
	mysql-io, mysql-keys, mysql5-cmds, mysql5-conn, mysql5-io, mysql5-keys, net-packets, nfs3, nfs3-ops, nfsd3,
	nfsd3-ops, ntp, postfix, power, proc-count, qmail, rpc, rpcd, sendmail, snooze, squid, test, thermal,
	top-bio, top-bio-adv, top-childwait, top-cpu, top-cpu-adv, top-cputime, top-cputime-avg, top-int, top-io,
	top-io-adv, top-latency, top-latency-avg, top-mem, top-oom, utmp, vm-memctl, vmk-hba, vmk-int, vmk-nic,
	vz-cpu, vz-io, vz-ubc, wifi
  • internal:自带的参数
  • /usr/share/dstat:支持的插件
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