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, --filesystem
99 enable filesystem stats (open files, inodes)
100 --ipc enable ipc stats (message queue, semaphores, shared memory)
102 --lock enable file lock stats (posix, flock, read, write)
104 --raw enable raw stats (raw sockets)
106 --socket
108 enable socket stats (total, tcp, udp, raw, ip-fragments)
109 --tcp enable tcp stats (listen, established, syn, time_wait, close)
111 --udp enable udp stats (listen, active)
113 --unix enable unix stats (datagram, stream, listen, active)
115 --vm enable vm stats (hard pagefaults, soft pagefaults, allocated,
117 free)
118 --plugin-name
120 enable (external) plugins by plugin name, see PLUGINS for
121 options
122 Possible internal stats are
124 aio, cpu, cpu24, disk, disk24, disk24old, epoch, fs, int, int24,
125 io, ipc, load, lock, mem, net, page, page24, proc, raw, socket,
126 swap, swapold, sys, tcp, time, udp, unix, vm
127 --list list the internal and external plugin names
129 -a, --all
131 equals -cdngy (default)
132 -f, --full
134 expand -C, -D, -I, -N and -S discovery lists
135 -v, --vmstat
137 equals -pmgdsc -D total
138 --bits force bits for values expressed in bytes
140 --float
142 force float values on screen (mutual exclusive with --integer)
143 --integer
145 force integer values on screen (mutual exclusive with --float)
146 --bw, --blackonwhite
148 change colors for white background terminal
149 --nocolor
151 disable colors (implies --noupdate)
152 --noheaders
154 disable repetitive headers
155 --noupdate
157 disable intermediate updates when delay > 1
158 --output file
160 write CSV output to file
161 --profile
163 show profiling statistics when exiting dstat
164
166 While anyone can create their own dstat plugins (and contribute them)
167 dstat ships with a number of plugins already that extend its
168 capabilities greatly. Here is an overview of the plugins dstat ships
169 with:
170 --battery
173 battery in percentage (needs ACPI)
174 --battery-remain
176 battery remaining in hours, minutes (needs ACPI)
177 --cpufreq
179 CPU frequency in percentage (needs ACPI)
180 --dbus number of dbus connections (needs python-dbus)
182 --disk-tps
184 per disk transactions per second (tps) stats
185 --disk-util
187 per disk utilization in percentage
188 --dstat
190 show dstat cputime consumption and latency
191 --dstat-cpu
193 show dstat advanced cpu usage
194 --dstat-ctxt
196 show dstat context switches
197 --dstat-mem
199 show dstat advanced memory usage
200 --fan fan speed (needs ACPI)
202 --freespace
204 per filesystem disk usage
205 --gpfs GPFS read/write I/O (needs mmpmon)
207 --gpfs-ops
209 GPFS filesystem operations (needs mmpmon)
210 --helloworld
212 Hello world example dstat plugin
213 --innodb-buffer
215 show innodb buffer stats
216 --innodb-io
218 show innodb I/O stats
219 --innodb-ops
221 show innodb operations counters
222 --lustre
224 show lustre I/O throughput
225 --memcache-hits
227 show the number of hits and misses from memcache
228 --mysql5-cmds
230 show the MySQL5 command stats
231 --mysql5-conn
233 show the MySQL5 connection stats
234 --mysql5-io
236 show the MySQL5 I/O stats
237 --mysql5-keys
239 show the MySQL5 keys stats
240 --mysql-io
242 show the MySQL I/O stats
243 --mysql-keys
245 show the MySQL keys stats
246 --net-packets
248 show the number of packets received and transmitted
249 --nfs3 show NFS v3 client operations
251 --nfs3-ops
253 show extended NFS v3 client operations
254 --nfsd3
256 show NFS v3 server operations
257 --nfsd3-ops
259 show extended NFS v3 server operations
260 --ntp show NTP time from an NTP server
262 --postfix
264 show postfix queue sizes (needs postfix)
265 --power
267 show power usage
268 --proc-count
270 show total number of processes
271 --qmail
273 show qmail queue sizes (needs qmail)
274 --rpc show RPC client calls stats
276 --rpcd show RPC server calls stats
278 --sendmail
280 show sendmail queue size (needs sendmail)
281 --snooze
283 show number of ticks per second
284 --squid
286 show squid usage statistics
287 --test show test plugin output
289 --thermal
291 system temperature sensors
292 --top-bio
294 show most expensive block I/O process
295 --top-bio-adv
297 show most expensive block I/O process (incl. pid and other
298 stats)
299 --top-childwait
301 show process waiting for child the most
302 --top-cpu
304 show most expensive CPU process
305 --top-cpu-adv
307 show most expensive CPU process (incl. pid and other stats)
308 --top-cputime
310 show process using the most CPU time (in ms)
311 --top-cputime-avg
313 show process with the highest average timeslice (in ms)
314 --top-int
316 show most frequent interrupt
317 --top-io
319 show most expensive I/O process
320 --top-io-adv
322 show most expensive I/O process (incl. pid and other stats)
323 --top-latency
325 show process with highest total latency (in ms)
326 --top-latency-avg
328 show process with the highest average latency (in ms)
329 --top-mem
331 show process using the most memory
332 --top-oom
334 show process that will be killed by OOM the first
335 --utmp show number of utmp connections (needs python-utmp)
337 --vmk-hba
339 show VMware ESX kernel vmhba stats
340 --vmk-int
342 show VMware ESX kernel interrupt stats
343 --vmk-nic
345 show VMware ESX kernel port stats
346 --vm-memctl
348 show ballooning status inside VMware guests
349 --vz-cpu
351 show CPU usage per OpenVZ guest
352 --vz-io
354 show I/O usage per OpenVZ guest
355 --vz-ubc
357 show OpenVZ user beancounters
358 --wifi wireless link quality and signal to noise ratio
360
362 delay is the delay in seconds between each update
363 count is the number of updates to display before exiting
365 The default delay is 1 and count is unspecified (unlimited)
367
370 When invoking dstat with a delay greater than 1 and without the
371 --noupdate option, it will show intermediate updates, ie. the first
372 time a 1 sec average, the second update a 2 second average, etc. until
373 the delay has been reached.
374 So in case you specified a delay of 10, the 9 intermediate updates are
376 NOT snapshots, they are averages over the time that passed since the
377 last final update. The end result is that you get a 10 second average
378 on a new line, just like with vmstat.
379
382 Using dstat to relate disk-throughput with network-usage (eth0), total
383 CPU-usage and system counters:
384 dstat -dnyc -N eth0 -C total -f 5
387 Checking dstat’s behaviour and the system impact of dstat:
388 dstat -taf --debug
391 Using the time plugin together with cpu, net, disk, system, load, proc
392 and top_cpu plugins:
393 dstat -tcndylp --top-cpu
396 this is identical to
397 dstat --time --cpu --net --disk --sys --load --proc --top-cpu
400 Using dstat to relate cpu stats with interrupts per device:
401 dstat -tcyif
404
406 Since it is practically impossible to test dstat on every possible
407 permutation of kernel, python or distribution version, I need your help
408 and your feedback to fix the remaining problems. If you have
409 improvements or bugreports, please send them to: [1]dag@wieers.com
410 Note
413 Please see the TODO file for known bugs and future plans.
414
417 Paths that may contain external dstat_*.py plugins:
418 ~/.dstat/
421 (path of binary)/plugins/
422 /usr/share/dstat/
423 /usr/local/share/dstat/
424
426 Performance tools
427 ifstat(1), iftop(8), iostat(1), mpstat(1), netstat(1), nfsstat(1), nstat, vmstat(1), xosview(1)
428 Debugging tools
430 htop(1), lslk(1), lsof(8), top(1)
431 Process tracing
433 ltrace(1), pmap(1), ps(1), pstack(1), strace(1)
434 Binary debugging
436 ldd(1), file(1), nm(1), objdump(1), readelf(1)
437 Memory usage tools
439 free(1), memusage, memusagestat, slabtop(1)
440 Accounting tools
442 dump-acct, dump-utmp, sa(8)
443 Hardware debugging tools
445 dmidecode, ifinfo(1), lsdev(1), lshal(1), lshw(1), lsmod(8), lspci(8), lsusb(8), smartctl(8), x86info(1)
446 Application debugging
448 mailstats(8), qshape(1)
449 Xorg related tools
451 xdpyinfo(1), xrestop(1)
452 Other useful info
454 collectl(1), proc(5), procinfo(8)
455
457 Written by Dag Wieers [1]dag@wieers.com
458 Homepage at [2]http://dag.wieers.com/home-made/dstat/
460 This manpage was initially written by Andrew Pollock
462 [3]apollock@debian.org for the Debian GNU/Linux system.
463
466 1. dag@wieers.com
467 mailto:dag@wieers.com
468 2. http://dag.wieers.com/home-made/dstat/
470 http://dag.wieers.com/home-made/dstat/
471 3. apollock@debian.org
473 mailto:apollock@debian.org
474 0.7.0 06/15/2010 DSTAT(1)