Rechercher une page de manuel
dstat
Langue: en
Version: 09/12/2008 (ubuntu - 07/07/09)
Section: 1 (Commandes utilisateur)
Sommaire
NAME
dstat - versatile tool for generating system resource statisticsSYNOPSIS
dstat [-afv] [options..] [delay [count]]DESCRIPTION
Dstat is a versatile replacement for vmstat, iostat and ifstat. Dstat overcomes some of the limitations and adds some extra features.Dstat 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).
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.
Dstat allows its data to be directly written to a CSV file to be imported and used by OpenOffice, Gnumeric or Excel to create graphs.
Note Users of Sleuthkit might find Sleuthkit's dstat being renamed to datastat to avoid a name conflict. See Debian bug #283709 for more information.
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 5,10
- include interrupt 5 and 10
- -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
- -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
- --ipc
- enable ipc stats
- --lock
- enable lock stats
- --raw
- enable raw stats
- --tcp
- enable tcp stats
- --udp
- enable udp stats
- --unix
- enable unix stats
- -M stat1,stat2
- enable internal stats and external plugin stats
- Possible internal stats are
- cpu, cpu24, disk, disk24, disk24old, epoch, int, int24, ipc, load, lock, mem, net, page, page24, proc, raw, swap, swapold, sys, tcp, time, udp, unix
- Possible external plugin stats can be listed using
- dstat -M list
- -a, --all
- equals -cdngy (default)
- -f, --full
- expand -C, -D, -I, -N and -S discovery lists
- -v, --vmstat
- equals -pmgdsc -D total
- --integer
- show integer values
- --nocolor
- disable colors (implies --noupdate)
- --noheaders
- disable repetitive headers
- --noupdate
- disable intermediate updates when delay > 1
- --output file
- write CSV output to file
ARGUMENTS
delay is the delay in seconds between each updatecount is the number of updates to display before exiting
The default delay is 1 and count is unspecified (unlimited)
INTERMEDIATE UPDATES
When invoking dstat 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.
USAGE
Using dstat to relate disk-throughput with network-usage (eth0), total CPU-usage and system counters:dstat -dnyc -N eth0 -C total -f 5Checking dstat's behaviour and the system's impact on dstat:
dstat -taf --debugUsing the time plugin together with cpu, net, disk, system, load, proc and topcpu plugins:
dstat -tcndylp -M topcputhis is identical to
dstat -M time,cpu,net,disk,sys,load,proc,topcpuUsing dstat to relate cpu stats with interrupts per device:
dstat -tcyif
BUGS
Since it is practically impossible to test dstat 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: [1]dag@wieers.com
Note Please see the TODO file for known bugs and future plans.
FILES
Paths that may contain external dstat_* plugins:~/.dstat/ (path of binary)/plugins/ /usr/share/dstat/ /usr/local/share/dstat/
SEE ALSO
Performance tools
ifstat(1), iftop(8), iostat(1), mpstat(1), netstat(1), nfsstat(1), nstat, vmstat(1), xosview(1)
Debugging tools
htop(1), lslk(1), lsof(8), top(1)
Process tracing
ltrace(1), pmap(1), ps(1), pstack(1), strace(1)
Binary debugging
ldd(1), file(1), nm(1), objdump(1), readelf(1)
Memory usage tools
free(1), memusage, memusagestat, slabtop(1)
Accounting tools
dump-acct, dump-utmp, sa(8)
Hardware debugging tools
dmidecode, ifinfo(1), lsdev(1), lshal(1), lshw(1), lsmod(8), lspci(8), lsusb(8), smartctl(8), x86info(1)
Application debugging
mailstats(8), qshape(1)
Xorg related tools
xdpyinfo(1), xrestop(1)
Other useful info
proc(5)
AUTHOR
Written by Dag Wieers [1]dag@wieers.comHomepage at [2]http://dag.wieers.com/home-made/dstat/
This manpage was initially written by Andrew Pollock [3]apollock@debian.org for the Debian GNU/Linux system, and updated by Dag Wieers [1]dag@wieers.com
REFERENCES
- 1. dag@wieers.com
- mailto:dag@wieers.com
- 2. http://dag.wieers.com/home-made/dstat/
- http://dag.wieers.com/home-made/dstat/
- 3. apollock@debian.org
- mailto:apollock@debian.org
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre