Provided by: dstat_0.7.2-2_all bug


       dstat - versatile tool for generating system resource statistics


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


       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.

       Users of Sleuthkit might find Sleuthkit’s dstat being renamed to datastat to avoid a name
       conflict. See Debian bug #283709 for more information.


       -c, --cpu
              enable cpu stats (system, user, idle, wait, hardware interrupt, software interrupt)

       -C 0,3,total
              include cpu0, cpu3 and total (when using -c/--cpu)

       -d, --disk
              enable disk stats (read, write)

       -D total,hda
              include total and hda (when using -d/--disk)

       -g, --page
              enable page stats (page in, page out)

       -i, --int
              enable interrupt stats

       -I 5,10
              include interrupt 5 and 10 (when using -i/--int)

       -l, --load
              enable load average stats (1 min, 5 mins, 15mins)

       -m, --mem
              enable memory stats (used, buffers, cache, free)

       -n, --net
              enable network stats (receive, send)

       -N eth1,total
              include eth1 and total (when using -n/--net)

       -p, --proc
              enable process stats (runnable, uninterruptible, new)

       -r, --io
              enable I/O request stats (read, write requests)

       -s, --swap
              enable swap stats (used, free)

       -S swap1,total
              include swap1 and total (when using -s/--swap)

       -t, --time
              enable time/date output

       -T, --epoch
              enable time counter (seconds since epoch)

       -y, --sys
              enable system stats (interrupts, context switches)

       --aio  enable aio stats (asynchronous I/O)

       --fs   enable filesystem stats (open files, inodes)

       --ipc  enable ipc stats (message queue, semaphores, shared memory)

       --lock enable file lock stats (posix, flock, read, write)

       --raw  enable raw stats (raw sockets)

              enable socket stats (total, tcp, udp, raw, ip-fragments)

       --tcp  enable tcp stats (listen, established, syn, time_wait, close)

       --udp  enable udp stats (listen, active)

       --unix enable unix stats (datagram, stream, listen, active)

       --vm   enable vm stats (hard pagefaults, soft pagefaults, allocated, free)

              enable (external) plugins by plugin name, see PLUGINS for options

       Possible internal stats are
              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

       --list list the internal and external plugin names

       -a, --all
              equals -cdngy (default)

       -f, --full
              expand -C, -D, -I, -N and -S discovery lists

       -v, --vmstat
              equals -pmgdsc -D total

              force float values on screen (mutual exclusive with --integer)

              force integer values on screen (mutual exclusive with --float)

       --bw, --blackonwhite
              change colors for white background terminal

              disable colors (implies --noupdate)

              disable repetitive headers

              disable intermediate updates when delay > 1

       --output file
              write CSV output to file

              show profiling statistics when exiting dstat


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

              battery in percentage (needs ACPI)

              battery remaining in hours, minutes (needs ACPI)

              CPU frequency in percentage (needs ACPI)

       --dbus number of dbus connections (needs python-dbus)

              per disk transactions per second (tps) stats

              per disk utilization in percentage

              show dstat cputime consumption and latency

              show dstat advanced cpu usage

              show dstat context switches

              show dstat advanced memory usage

       --fan  fan speed (needs ACPI)

              per filesystem disk usage

       --gpfs GPFS read/write I/O (needs mmpmon)

              GPFS filesystem operations (needs mmpmon)

              Hello world example dstat plugin

              show innodb buffer stats

              show innodb I/O stats

              show innodb operations counters

              show lustre I/O throughput

              show the number of hits and misses from memcache

              show the MySQL5 command stats

              show the MySQL5 connection stats

              show the MySQL5 I/O stats

              show the MySQL5 keys stats

              show the MySQL I/O stats

              show the MySQL keys stats

              show the number of packets received and transmitted

       --nfs3 show NFS v3 client operations

              show extended NFS v3 client operations

              show NFS v3 server operations

              show extended NFS v3 server operations

       --ntp  show NTP time from an NTP server

              show postfix queue sizes (needs postfix)

              show power usage

              show total number of processes

              show qmail queue sizes (needs qmail)

       --rpc  show RPC client calls stats

       --rpcd show RPC server calls stats

              show sendmail queue size (needs sendmail)

              show number of ticks per second

              show squid usage statistics

       --test show test plugin output

              system temperature sensors

              show most expensive block I/O process

              show most expensive block I/O process (incl. pid and other stats)

              show process waiting for child the most

              show most expensive CPU process

              show most expensive CPU process (incl. pid and other stats)

              show process using the most CPU time (in ms)

              show process with the highest average timeslice (in ms)

              show most frequent interrupt

              show most expensive I/O process

              show most expensive I/O process (incl. pid and other stats)

              show process with highest total latency (in ms)

              show process with the highest average latency (in ms)

              show process using the most memory

              show process that will be killed by OOM the first

       --utmp show number of utmp connections (needs python-utmp)

              show VMware ESX kernel vmhba stats

              show VMware ESX kernel interrupt stats

              show VMware ESX kernel port stats

              show ballooning status inside VMware guests

              show CPU usage per OpenVZ guest

              show I/O usage per OpenVZ guest

              show OpenVZ user beancounters

       --wifi wireless link quality and signal to noise ratio


       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)


       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.


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

       dstat -dnyc -N eth0 -C total -f 5
       Checking dstat’s behaviour and the system impact of dstat:

       dstat -taf --debug
       Using the time plugin together with cpu, net, disk, system, load, proc and top_cpu

       dstat -tcndylp --top-cpu
       this is identical to

       dstat --time --cpu --net --disk --sys --load --proc --top-cpu
       Using dstat to relate cpu stats with interrupts per device:

       dstat -tcyif


       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]

       Please see the TODO file for known bugs and future plans.


       Paths that may contain external dstat_*.py plugins:

       (path of binary)/plugins/


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


       Written by Dag Wieers [1]

       Homepage at [2]

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





  0.7.0                                     06/15/2010                                   DSTAT(1)