DragonFly On-Line Manual Pages

VARNISHHIST(1)                                                  VARNISHHIST(1)

NAME
       varnishhist - Varnish request histogram

SYNOPSIS
       varnishhist [-C] [-d] [-g <request|vxid>] [-h] [-L limit] [-n name] [-N
       filename] [-p period] [-P <size|responsetime|tag:field_num:min:max>]
       [-q query] [-r filename] [-t <seconds|off>] [-T seconds] [-V]

DESCRIPTION
       The varnishhist utility reads varnishd(1) shared memory logs and
       presents a continuously updated histogram showing the distribution of
       the last N requests by their processing.  The value of N and the
       vertical scale are displayed in the top left corner.  The horizontal
       scale is logarithmic.  Hits are marked with a pipe character ("|"), and
       misses are marked with a hash character ("#").

       The following options are available:

       -C     Do all regular expression and string matching caseless.

       -d     Start processing log records at the head of the log instead of
              the tail.

       -g <request|vxid>
              The grouping of the log records. The default is to group by
              vxid.

       -h     Print program usage and exit

       -L limit
              Sets the upper limit of incomplete transactions kept before the
              oldest transaction is force completed. A warning record is
              synthesized when this happens. This setting keeps an upper bound
              on the memory usage of running queries. Defaults to 1000
              transactions.

       -n name
              Specify the name of the varnishd instance to get logs from. If
              -n is not specified, the host name is used.

       -N filename
              Specify the filename of a stale VSM instance. When using this
              option the abandonment checking is disabled.

       -p period
              Specified the number of seconds between screen refreshes.
              Default is 1 second, and can be changed at runtime by pressing
              the [1-9] keys.

       -P <size|responsetime|tag:field_num:min:max>
              Either specify "size" or "responsetime" profile or create a new
              one. Define the tag we'll look for, and the field number of the
              value we are interested in. min and max are the boundaries of
              the graph (these are power of tens).

       -q query
              Specifies the VSL query to use.

       -r filename
              Read log in binary file format from this file. The file can be
              created with varnishlog -w filename.

       -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.

       -T seconds
              Sets the transaction timeout in seconds. This defines the
              maximum number of seconds elapsed between a Begin tag and the
              End tag. If the timeout expires, a warning record is synthesized
              and the transaction is force completed. Defaults to 120 seconds.

       -V     Print version information and exit.

SEE ALSO

       o varnishd(1)

       o varnishlog(1)

       o varnishncsa(1)

       o varnishstat(1)

       o varnishtop(1)

HISTORY
       The varnishhist utility was developed by Poul-Henning Kamp in
       cooperation with Verdens Gang AS and Varnish Software AS. This manual
       page was written by Dag-Erling Smorgrav.

COPYRIGHT
       This document is licensed under the same licence as Varnish itself. See
       LICENCE for details.

       o Copyright (c) 2006 Verdens Gang AS

       o Copyright (c) 2006-2015 Varnish Software AS

                                                                VARNISHHIST(1)