Dstat is a versatile replacement for vmstat, iostat, netstat and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting.
Dstat allows you to view all of your system resources in real-time, you can eg. compare disk utilization in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval).
Dstat gives you detailed selective information in columns and clearly indicates in what magnitude and unit the output is displayed. Less confusion, less mistakes. And most importantly, it makes it very easy to write plugins to collect your own counters and extend in ways you never expected.
Dstat's output by default is designed for being interpreted by humans in real-time, however you can export details to CSV output to a file to be imported later into Gnumeric or Excel to generate graphs.
List of plugins:
$ dstat --list
internal:
aio, cpu, cpu-adv, cpu-use, cpu24, disk, disk24, disk24-old, epoch, fs, int, int24, io, ipc, load, lock, mem, mem-adv, net, page, page24, proc, raw, socket, swap, swap-old, sys, tcp, time,
udp, unix, vm, vm-adv, zones
/usr/share/dstat:
battery, battery-remain, condor-queue, cpufreq, dbus, disk-avgqu, disk-avgrq, disk-svctm, disk-tps, disk-util, disk-wait, dstat, dstat-cpu, dstat-ctxt, dstat-mem, fan, freespace, fuse, gpfs,
gpfs-ops, helloworld, innodb-buffer, innodb-io, innodb-ops, lustre, md-status, memcache-hits, mysql-io, mysql-keys, mysql5-cmds, mysql5-conn, mysql5-innodb, mysql5-innodb-basic,
mysql5-innodb-extra, mysql5-io, mysql5-keys, net-packets, nfs3, nfs3-ops, nfsd3, nfsd3-ops, nfsd4-ops, nfsstat4, ntp, postfix, power, proc-count, qmail, redis, rpc, rpcd, sendmail, snmp-cpu,
snmp-load, snmp-mem, snmp-net, snmp-net-err, snmp-sys, 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-cpu, vm-mem, vm-mem-adv, vmk-hba, vmk-int, vmk-nic, vz-cpu, vz-io, vz-ubc, wifi, zfs-arc, zfs-l2arc, zfs-zilExample usage:
$ dstat -c --top-cpu -d --top-bio --top-latency
--total-cpu-usage-- -most-expensive- -dsk/total- ----most-expensive---- --highest-total--
usr sys idl wai stl| cpu process | read writ| block i/o process | latency process
38 7 55 1 0|Xorg 1.2|3390k 7234k|xfce4-termi 52k 530k|Xorg 14
96 4 0 0 0|cross-localed 13| 108k 0 |make 104k 144k|cc1plus 319
97 3 0 0 0|cross-localed 12| 0 0 | |cc1plus 395
97 3 0 0 0|cross-localed 12| 48k 320k|make 92k 136k|cc1plus 251
96 4 0 0 0|cross-localed 12| 64k 0 |make 100k 504k|cc1plus 240
90 10 1 0 0|cross-localed 11| 360k 4104k|cross-local 0 2824k|cc1plus 261
86 14 0 0 0|cc1plus 11| 84k 0 |lib32-glibc 496k 935M|cc1plus 244
86 13 1 0 0|cc1plus 12| 104k 0 |tar 84k 99M|tar 513
83 16 1 0 0|cc1plus 12| 456k 4636k|lib32-glibc 108k 216M|cc1plus 277
91 9 0 0 0|cc1plus 12| 28k 0 |make 20k 48k|cc1plus 284
87 13 0 0 0|cc1plus 12| 424k 12M|lib32-glibc 264k 0 |cc1plus 412
82 17 0 0 0|cc1plus 11| 368k 20k|make 508k 1904k|cc1plus 344
84 16 0 0 0|cc1plus 10| 196k 0 |make 360k 288k|cc1plus 360
86 14 0 0 0|cc1plus 12| 460k 22M|make 188k 240k|cc1plus 227
92 8 0 0 0|cc1plus 12| 300k 0 |cc1plus 232k 0 |lib32-glibc-l 231
90 10 0 0 0|cc1plus 10| 336k 8548k|make 520k 540k|cc1plus 187
90 10 0 0 0|cc1plus 12| 252k 0 |make 156k 192k|cc1plus 178
91 9 0 0 0|cc1plus 12| 236k 0 |make 92k 112k|cc1plus 236
...Links