For completely manual: dstat manual
Some of dstat features:
Combines vmstat, iostat, ifstat and netstat information.'
Real-time
Written in Python
Show interrupts per device
Existing Plugins:
# 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-util, 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, rpc, rpcd, sendmail, snooze, thermal, top-bio, top-cpu, top-cputime, top-cputime-avg, top-io, 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
Sample commands:
Check top CPU, disk i/o and network i/o
# dstat ----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system-- usr sys idl wai hiq siq| read writ| recv send| in out | int csw 8 1 90 1 0 0| 24k 55k| 0 0 | 0 0 | 847 1837 5 1 94 0 0 0| 0 44k| 60B 95B| 0 0 | 876 2068 5 1 94 0 0 0|4096B 0 | 981B 2740B| 0 0 | 958 2261
Check top cpu, most expensive process for disk i/o
# dstat -c --top-cpu -d --top-bio --top-latency ----total-cpu-usage---- -most-expensive- -dsk/total- ----most-expensive---- --highest-total-- usr sys idl wai hiq siq| cpu process | read writ| block i/o process | latency process 8 1 90 1 0 0|firefox 0.9| 24k 55k|chrome 3895B 30k|kondemand/0 4381 5 1 94 0 0 0|firefox 1.5| 0 8192B|chrome 0 4096B|kondemand/1 16 5 1 94 0 0 0|firefox 1.5| 0 0 |terminator 0 8192B|kondemand/1 17
Check network status:
# stat -f --net --debug Module dstat_net requires ['/proc/net/dev'] --net/eth0----net/tun0----net/tun1----net/tun2---net/vmnet1--net/vmnet8--net/wlan0- recv send: recv send: recv send: recv send: recv send: recv send: recv send 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 0.32ms 595B 190B: 68B 0 : 68B 0 : 68B 0 : 0 0 : 0 0 : 0 0 0.66ms 416B 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 0.88ms 60B 66B: 0 0 : 0 0 : 0 0 : 0 0 : 0 0 : 0 0 0.55ms
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