Ubuntu Manpage: varnishstat - Varnish Cache statistics

Provided by: varnish_7.1.1-1.1ubuntu1_amd64

NAME

       varnishstat - Varnish Cache statistics

SYNOPSIS

       varnishstat [-1] [-f <glob>] [-h] [-I <glob>] [-j] [-l] [-n <dir>] [-r] [-t <seconds|off>]
       [-V] [-X <glob>] [-x]

DESCRIPTION

The varnishstat utility displays statistics from a running varnishd(1) instance.

The following options are available:

-1 Instead of presenting a continuously updated display, print the statistics to
stdout.

-f <glob>
Legacy field filtering glob. Use backslash to escape characters. If the argument
starts with '^' it is used as an exclusive glob. Multiple -f arguments may be
given. Legacy filtering globs are run along with inclusion globs (-I arguments) and
exclusion globs (-X arguments) in order on a first-match basis.

-h Print program usage and exit

-I <glob>
Field inclusion glob. Use backslash to escape characters. Multiple -I arguments
may be given. Exclusion globs are run in order along with exclusion globs (-X
arguments) and legacy filtering globs (-f arguments) on a first-match basis.

-j Print statistics to stdout as JSON.

-l Lists the available fields to use with the -f option.

-n <dir>
Specify the varnishd working directory (also known as instance name) to get logs
from. If -n is not specified, the host name is used.

-r Toggle raw or adjusted gauges, adjusted is the default.

-t <seconds|off>
Timeout before returning error on initial VSM connection. If set the VSM connection
is retried every 0.5 seconds for this many seconds. If zero the connection is
attempted only once and will fail immediately if unsuccessful. If set to "off", the
connection will not fail, allowing the utility to start and wait indefinetely for
the Varnish instance to appear. Defaults to 5 seconds.

-V Print version information and exit.

-X <glob>
Field exclusion glob. Use backslash to escape characters. Multiple -X arguments
may be given. Exclusion globs are run in order along with inclusion globs (-I
arguments) and legacy filtering globs (-f arguments) on a first-match basis.

-x Print statistics to stdout as XML.

--optstring
Print the optstring parameter to getopt(3) to help writing wrapper scripts.

CURSES MODE

       When  neither  -1,  -j nor -x options are given, the application starts up in curses mode.
       This  shows  a  continuously  updated  view  of  the  counter  values,  along  with  their
       description.

       The top area shows process uptime information.

       The center area shows a list of counter values.

       The bottom area shows the description of the currently selected counter.

       On startup, only counters at INFO level are shown.

   Columns
       The following columns are displayed, from left to right:

       Name   The name of the counter

       Current
              The current value of the counter.

       Change The average per second change over the last update interval.

       Average
              The  average  value  of  this  counter over the runtime of the Varnish daemon, or a
              period if the counter can't be averaged.

       Avg_10 The moving average over the last 10 update intervals.

       Avg_100
              The moving average over the last 100 update intervals.

       Avg_1000
              The moving average over the last 1000 update intervals.

   Key bindings
       <h>    Toggle the help screen.

       <UP> or <k>
              Navigate the counter list one line up.

       <DOWN> or <j>
              Navigate the counter list one line down.

       <PAGEUP> or <b> or <CTRL-B>
              Navigate the counter list one page up.

       <PAGEDOWN> or <SPACE> or <CTRL-F>
              Navigate the counter list one page down.

       <HOME> or <g>
              Navigate the counter list to the top.

       <END> or <G>
              Navigate the counter list to the bottom.

       <d>    Toggle between showing and hiding unseen counters. Unseen counters are  those  that
              has  been  zero  for  the  entire  runtime  of varnishstat. Defaults to hide unseen
              counters.

       <r>    Toggle between showing raw and adjusted gauges. When a gauge is decremented  faster
              than  it is incremented, it may appear as a large integer with its most significant
              bit set. By default such values are adjusted to zero.

       <e>    Toggle scaling of values.

       <v>    Increase verbosity. Defaults to only showing informational counters.

       <V>    Decrease verbosity. Defaults to only showing informational counters.

       <q>    Quit.

       <CTRL+T>
              Sample now.

       <+>    Increase refresh interval.

       <->    Decrease refresh interval.

OUTPUTS

       The XML output format is:

          <varnishstat timestamp="YYYY-MM-DDTHH:mm:SS">
            <stat>
              <name>FIELD NAME</name>
              <value>FIELD VALUE</value>
              <flag>FIELD SEMANTICS</flag>
              <format>FIELD DISPLAY FORMAT</format>
              <description>FIELD DESCRIPTION</description>
            </stat>
            [..]
          </varnishstat>

       The JSON output format is:

          {
            "timestamp": "YYYY-MM-DDTHH:mm:SS",
            "FIELD NAME": {
              "description": "FIELD DESCRIPTION",
              "flag": "FIELD SEMANTICS", "format": "FIELD DISPLAY FORMAT",
              "value": FIELD VALUE
            },
            "FIELD NAME": {
              "description": "FIELD DESCRIPTION",
              "flag": "FIELD SEMANTICS", "format": "FIELD DISPLAY FORMAT",
              "value": FIELD VALUE
            },
            [..]
          }

       Timestamp is the time when the report was generated by varnishstat.

AUTHORS