1DSTAT(1) DSTAT(1)
2
6 dstat - versatile tool for generating system resource statistics
7
9 dstat [-afv] [options..] [delay [count]]
10
13 Dstat is a versatile replacement for vmstat, iostat and ifstat. Dstat
14 overcomes some of the limitations and adds some extra features.
15 Dstat allows you to view all of your system resources instantly, you
17 can eg. compare disk usage in combination with interrupts from your IDE
18 controller, or compare the network bandwidth numbers directly with the
19 disk throughput (in the same interval).
20 Dstat also cleverly gives you the most detailed information in columns
22 and clearly indicates in what magnitude and unit the output is
23 displayed. Less confusion, less mistakes, more efficient.
24 Dstat is unique in letting you aggregate block device throughput for a
26 certain diskset or network bandwidth for a group of interfaces, ie. you
27 can see the throughput for all the block devices that make up a single
28 filesystem or storage system.
29 Dstat allows its data to be directly written to a CSV file to be
31 imported and used by OpenOffice, Gnumeric or Excel to create graphs.
32 Note
35 Users of Sleuthkit might find Sleuthkit’s dstat being renamed to
36 datastat to avoid a name conflict. See Debian bug #283709 for more
37 information.
38
41 -c, --cpu
42 enable cpu stats (system, user, idle, wait, hardware interrupt,
43 software interrupt)
44 -C 0,3,total
46 include cpu0, cpu3 and total (when using -c/--cpu)
47 -d, --disk
49 enable disk stats (read, write)
50 -D total,hda
52 include total and hda (when using -d/--disk)
53 -g, --page
55 enable page stats (page in, page out)
56 -i, --int
58 enable interrupt stats
59 -I 5,10
61 include interrupt 5 and 10 (when using -i/--int)
62 -l, --load
64 enable load average stats (1 min, 5 mins, 15mins)
65 -m, --mem
67 enable memory stats (used, buffers, cache, free)
68 -n, --net
70 enable network stats (receive, send)
71 -N eth1,total
73 include eth1 and total (when using -n/--net)
74 -p, --proc
76 enable process stats (runnable, uninterruptible, new)
77 -r, --io
79 enable I/O request stats (read, write requests)
80 -s, --swap
82 enable swap stats (used, free)
83 -S swap1,total
85 include swap1 and total (when using -s/--swap)
86 -t, --time
88 enable time/date output
89 -T, --epoch
91 enable time counter (seconds since epoch)
92 -y, --sys
94 enable system stats (interrupts, context switches)
95 --aio enable aio stats (asynchronous I/O)
97 --fs enable filesystem stats (open files, inodes)
99 --ipc enable ipc stats (message queue, semaphores, shared memory)
101 --lock enable file lock stats (posix, flock, read, write)
103 --raw enable raw stats (raw sockets)
105 --socket
107 enable socket stats (total, tcp, udp, raw, ip-fragments)
108 --tcp enable tcp stats (listen, established, syn, time_wait, close)
110 --udp enable udp stats (listen, active)
112 --unix enable unix stats (datagram, stream, listen, active)
114 --vm enable vm stats (hard pagefaults, soft pagefaults, allocated,
116 free)
117 --plugin-name
119 enable (external) plugins by plugin name, see PLUGINS for
120 options
121 Possible internal stats are
123 aio, cpu, cpu24, disk, disk24, disk24old, epoch, fs, int, int24,
124 io, ipc, load, lock, mem, net, page, page24, proc, raw, socket,
125 swap, swapold, sys, tcp, time, udp, unix, vm
126 --list list the internal and external plugin names
128 -a, --all
130 equals -cdngy (default)
131 -f, --full
133 expand -C, -D, -I, -N and -S discovery lists
134 -v, --vmstat
136 equals -pmgdsc -D total
137 --float
139 force float values on screen (mutual exclusive with --integer)
140 --integer
142 force integer values on screen (mutual exclusive with --float)
143 --bw, --blackonwhite
145 change colors for white background terminal
146 --nocolor
148 disable colors (implies --noupdate)
149 --noheaders
151 disable repetitive headers
152 --noupdate
154 disable intermediate updates when delay > 1
155 --output file
157 write CSV output to file
158 --profile
160 show profiling statistics when exiting dstat
161
163 While anyone can create their own dstat plugins (and contribute them)
164 dstat ships with a number of plugins already that extend its
165 capabilities greatly. Here is an overview of the plugins dstat ships
166 with:
167 --battery
170 battery in percentage (needs ACPI)
171 --battery-remain
173 battery remaining in hours, minutes (needs ACPI)
174 --cpufreq
176 CPU frequency in percentage (needs ACPI)
177 --dbus number of dbus connections (needs python-dbus)
179 --disk-tps
181 per disk transactions per second (tps) stats
182 --disk-util
184 per disk utilization in percentage
185 --dstat
187 show dstat cputime consumption and latency
188 --dstat-cpu
190 show dstat advanced cpu usage
191 --dstat-ctxt
193 show dstat context switches
194 --dstat-mem
196 show dstat advanced memory usage
197 --fan fan speed (needs ACPI)
199 --freespace
201 per filesystem disk usage
202 --gpfs GPFS read/write I/O (needs mmpmon)
204 --gpfs-ops
206 GPFS filesystem operations (needs mmpmon)
207 --helloworld
209 Hello world example dstat plugin
210 --innodb-buffer
212 show innodb buffer stats
213 --innodb-io
215 show innodb I/O stats
216 --innodb-ops
218 show innodb operations counters
219 --lustre
221 show lustre I/O throughput
222 --memcache-hits
224 show the number of hits and misses from memcache
225 --mysql5-cmds
227 show the MySQL5 command stats
228 --mysql5-conn
230 show the MySQL5 connection stats
231 --mysql5-io
233 show the MySQL5 I/O stats
234 --mysql5-keys
236 show the MySQL5 keys stats
237 --mysql-io
239 show the MySQL I/O stats
240 --mysql-keys
242 show the MySQL keys stats
243 --net-packets
245 show the number of packets received and transmitted
246 --nfs3 show NFS v3 client operations
248 --nfs3-ops
250 show extended NFS v3 client operations
251 --nfsd3
253 show NFS v3 server operations
254 --nfsd3-ops
256 show extended NFS v3 server operations
257 --ntp show NTP time from an NTP server
259 --postfix
261 show postfix queue sizes (needs postfix)
262 --power
264 show power usage
265 --proc-count
267 show total number of processes
268 --qmail
270 show qmail queue sizes (needs qmail)
271 --rpc show RPC client calls stats
273 --rpcd show RPC server calls stats
275 --sendmail
277 show sendmail queue size (needs sendmail)
278 --snooze
280 show number of ticks per second
281 --squid
283 show squid usage statistics
284 --test show test plugin output
286 --thermal
288 system temperature sensors
289 --top-bio
291 show most expensive block I/O process
292 --top-bio-adv
294 show most expensive block I/O process (incl. pid and other
295 stats)
296 --top-childwait
298 show process waiting for child the most
299 --top-cpu
301 show most expensive CPU process
302 --top-cpu-adv
304 show most expensive CPU process (incl. pid and other stats)
305 --top-cputime
307 show process using the most CPU time (in ms)
308 --top-cputime-avg
310 show process with the highest average timeslice (in ms)
311 --top-int
313 show most frequent interrupt
314 --top-io
316 show most expensive I/O process
317 --top-io-adv
319 show most expensive I/O process (incl. pid and other stats)
320 --top-latency
322 show process with highest total latency (in ms)
323 --top-latency-avg
325 show process with the highest average latency (in ms)
326 --top-mem
328 show process using the most memory
329 --top-oom
331 show process that will be killed by OOM the first
332 --utmp show number of utmp connections (needs python-utmp)
334 --vmk-hba
336 show VMware ESX kernel vmhba stats
337 --vmk-int
339 show VMware ESX kernel interrupt stats
340 --vmk-nic
342 show VMware ESX kernel port stats
343 --vm-memctl
345 show ballooning status inside VMware guests
346 --vz-cpu
348 show CPU usage per OpenVZ guest
349 --vz-io
351 show I/O usage per OpenVZ guest
352 --vz-ubc
354 show OpenVZ user beancounters
355 --wifi wireless link quality and signal to noise ratio
357
359 delay is the delay in seconds between each update
360 count is the number of updates to display before exiting
362 The default delay is 1 and count is unspecified (unlimited)
364
367 When invoking dstat with a delay greater than 1 and without the
368 --noupdate option, it will show intermediate updates, ie. the first
369 time a 1 sec average, the second update a 2 second average, etc. until
370 the delay has been reached.
371 So in case you specified a delay of 10, the 9 intermediate updates are
373 NOT snapshots, they are averages over the time that passed since the
374 last final update. The end result is that you get a 10 second average
375 on a new line, just like with vmstat.
376
379 Using dstat to relate disk-throughput with network-usage (eth0), total
380 CPU-usage and system counters:
381 dstat -dnyc -N eth0 -C total -f 5
384 Checking dstat’s behaviour and the system impact of dstat:
385 dstat -taf --debug
388 Using the time plugin together with cpu, net, disk, system, load, proc
389 and top_cpu plugins:
390 dstat -tcndylp --top-cpu
393 this is identical to
394 dstat --time --cpu --net --disk --sys --load --proc --top-cpu
397 Using dstat to relate cpu stats with interrupts per device:
398 dstat -tcyif
401
403 Since it is practically impossible to test dstat on every possible
404 permutation of kernel, python or distribution version, I need your help
405 and your feedback to fix the remaining problems. If you have
406 improvements or bugreports, please send them to: [1]dag@wieers.com
407 Note
410 Please see the TODO file for known bugs and future plans.
411
414 Paths that may contain external dstat_*.py plugins:
415 ~/.dstat/
418 (path of binary)/plugins/
419 /usr/share/dstat/
420 /usr/local/share/dstat/
421
423 Performance tools
424 ifstat(1), iftop(8), iostat(1), mpstat(1), netstat(1), nfsstat(1), nstat, vmstat(1), xosview(1)
425 Debugging tools
427 htop(1), lslk(1), lsof(8), top(1)
428 Process tracing
430 ltrace(1), pmap(1), ps(1), pstack(1), strace(1)
431 Binary debugging
433 ldd(1), file(1), nm(1), objdump(1), readelf(1)
434 Memory usage tools
436 free(1), memusage, memusagestat, slabtop(1)
437 Accounting tools
439 dump-acct, dump-utmp, sa(8)
440 Hardware debugging tools
442 dmidecode, ifinfo(1), lsdev(1), lshal(1), lshw(1), lsmod(8), lspci(8), lsusb(8), smartctl(8), x86info(1)
443 Application debugging
445 mailstats(8), qshape(1)
446 Xorg related tools
448 xdpyinfo(1), xrestop(1)
449 Other useful info
451 collectl(1), proc(5), procinfo(8)
452
454 Written by Dag Wieers [1]dag@wieers.com
455 Homepage at [2]http://dag.wieers.com/home-made/dstat/
457 This manpage was initially written by Andrew Pollock
459 [3]apollock@debian.org for the Debian GNU/Linux system.
460
463 1. dag@wieers.com
464 mailto:dag@wieers.com
465 2. http://dag.wieers.com/home-made/dstat/
467 http://dag.wieers.com/home-made/dstat/
468 3. apollock@debian.org
470 mailto:apollock@debian.org
471 0.7.0 06/15/2010 DSTAT(1)