NAME

dool - versatile tool for generating system resource statistics

SYNOPSIS

dool [-afv] [options..] [delay [count]]

DESCRIPTION

Dool is a versatile replacement for vmstat, iostat and ifstat. Dool overcomes some of the limitations and adds some extra features.

Dool allows you to view all of your system resources instantly, you can eg. 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).

Dool 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.

Dool 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.

Dool allows its data to be directly written to a CSV file to be imported and used by OpenOffice, Gnumeric or Excel to create graphs.

OPTIONS

-c, --cpu

-C 0,3,total

-d, --disk

-D total,sda

--diskset diskset_name:dev1,dev2,dev3,etc...

-g, --page

-i, --int

-I 5,10

-l, --load

-m, --mem

-n, --net

-N eth1,total

-p, --proc

-r, --io

-s, --swap

-S swap1,total

-t, --time

-T, --epoch

-y, --sys

--aio

--cpu-adv

--cpu-use

--fs, --filesystem

--ipc

--lock

--mem-adv

--raw

--socket

--tcp

--udp

--unix

--vm

--vm-adv

--zones

--<plugin-name>

Possible internal stats are

--list

-a, --all

-f, --full

-v, --vmstat

--bits

--bytes

--float

--integer

--color

--color16

--bw, --blackonwhite

--nocolor

--noheaders

--noupdate

--output file

--display

--dstat

--profile

--ascii

PLUGINS

While anyone can create their own dool plugins (and contribute them) dool ships with a number of plugins already that extend its capabilities greatly. Here is an overview of the plugins dool ships with:

--battery

--battery-remain

--cpufreq

--dbus

--disk-avgqu

--disk-avgrq

--disk-svctm

--disk-tps

--disk-util

--disk-wait

--dool

--dool-cpu

--dool-ctxt

--dool-mem

--fan

--freespace

--gpfs

--gpfs-ops

--helloworld

--innodb-buffer

--innodb-io

--innodb-ops

--lustre

--md-status

--memcache-hits

--mysql5-cmds

--mysql5-conn

--mysql5-innodb

--mysql5-io

--mysql5-keys

--mysql-io

--mysql-keys

--net-packets

--nfs3

--nfs3-ops

--nfsd3

--nfsd3-ops

--nfsd4-ops

--nfsstat4

--ntp

--postfix

--power

--proc-count

--qmail

--redis: show redis stats

--rpc

--rpcd

--sendmail

--snmp-cpu

--snmp-load

--snmp-mem

--snmp-net

--snmp-net-err: show network errors using SNMP from DOOL_SNMPSERVER

--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-zil

ARGUMENTS

delay is the delay in seconds between each update

count is the number of updates to display before exiting

The default delay is 1 and count is unspecified (unlimited)

INTERMEDIATE UPDATES

When invoking dool with a delay greater than 1 and without the --noupdate option, it will show intermediate updates, ie. the first time a 1 sec average, the second update a 2 second average, etc. until the delay has been reached.

So in case you specified a delay of 10, the 9 intermediate updates are NOT snapshots, they are averages over the time that passed since the last final update. The end result is that you get a 10 second average on a new line, just like with vmstat.

EXAMPLES

Using dool to relate disk-throughput with network-usage (eth0), total CPU-usage and system counters:

dool -dnyc -N eth0 -C total -f 5

Checking dool’s behaviour and the system impact of dool:

dool -taf --debug

Using the time plugin together with cpu, net, disk, system, load, proc and top_cpu plugins:

dool -tcndylp --top-cpu

this is identical to

dool --time --cpu --net --disk --sys --load --proc --top-cpu

Using dool to relate advanced cpu stats with interrupts per device:

dool -t --cpu-adv -yif

BUGS

Since it is practically impossible to test dool on every possible permutation of kernel, python or distribution version, I need your help and your feedback to fix the remaining problems. If you have improvements or bugreports, please send them to: dag@wieers.com[1]

FILES

Paths that may contain external dool_*.py plugins:

~/.dool/
(path of binary)/plugins/
/usr/share/dool/
/usr/local/share/dool/

ENVIRONMENT VARIABLES

Dool will read additional command line arguments from the environment variable DOOL_OPTS. You can use this to configure Dool’s default behavior, e.g. if you have a black-on-white terminal:

export DOOL_OPTS="--bw --noupdate"

Other internal or external plugins have their own environment variables to influence their behavior, e.g.

DOOL_NTPSERVER

DOOL_MYSQL
DOOL_MYSQL_HOST
DOOL_MYSQL_PORT
DOOL_MYSQL_SOCKET
DOOL_MYSQL_USER
DOOL_MYSQL_PWD

DOOL_SNMPSERVER
DOOL_SNMPCOMMUNITY

DOOL_SQUID_OPTS

DOOL_TIMEFMT

SEE ALSO

htop(1), ifstat(1), iftop(8), iostat(1), mpstat(1), netstat(8), nfsstat(8), perf(1), powertop(1), rtacct(8), top(1), vmstat(8), xosview(1)

lslk(8), lsof(8), ltrace(1), pidstat(1), pmap(1), ps(1), pstack(1), strace(1)

ldd(1), file(1), nm(1), objdump(1), readelf(1)

free(1), memusage, memusagestat, ps_mem(1), slabtop(1), smem(8)

acct(2), dump-acct(8), dump-utmp(8), lastcomm(1), sa(8)

dmidecode(8), ifinfo(1), lsdev(1), lshal(1), lshw(1), lsmod(8), lspci(8), lsusb(8), numactl(8), smartctl(8), turbostat(8), x86info(1)

mailstats(8), qshape(1)

xdpyinfo(1), xrestop(1)

collectl(1), proc(5), procinfo(8)

AUTHOR

Dool is maintained by Scott Baker scott@perturb.org[2]

Homepage at https://github.com/scottchiefbaker/dool

dstat originally written by Dag Wieers dag@wieers.com[1]

Homepage at http://dag.wieers.com/home-made/dstat/

This manpage was initially written by Andrew Pollock apollock@debian.org[3] for the Debian GNU/Linux system.

AUTHOR

Scott Baker <scott@perturb.org>

NOTES

1.

dag@wieers.com

2.

scott@perturb.org

3.

apollock@debian.org