NAME

       varnishhist - Varnish request histogram

SYNOPSIS

       varnishhist  [-b] [-C] [-c] [-d] [-I regex] [-i tag] [-m tag:regex ...]  [-n varnish_name] [-r file] [-V]
       [-w delay] [-X regex] [-x tag]

DESCRIPTION

       The varnishhist utility reads  varnishd(1)  shared  memory  logs  and  presents  a  continuously  updated
       histogram  show‐ ing the distribution of the last N requests by their processing.  The value of N and the
       vertical scale are dis‐ played 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:

       -b     Include  log  entries which result from communication with a backend server.  If neither -b nor -c
              is specified, varnishhist acts as if they both were.

       -C     Ignore case when matching regular expressions.

       -c     Include log entries which result from communication with a  client.   If  neither  -b  nor  -c  is
              specified, varnishhist acts as if they both were.

       -d     Process  old  log  entries  on startup.  Normally, varnishhist will only process entries which are
              written to the log after it starts.

       -I regex
              Include log entries which match the specified  regular  expression.   If  neither  -I  nor  -i  is
              specified, all log entries are included.

       -i tag Include  log  entries  with the specified tag.  If neither -I nor -i is specified, all log entries
              are included.

       -m tag:regex only count transactions where tag matches regex. Multiple
              -m options are AND-ed together.

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

       -r file
              Read log entries from file instead of shared memory.

       -V     Display the version number and exit.

       -w delay
              Wait  at  least  delay seconds between each update.  The default is 1.  file instead of displaying
              them.  The file will be overwritten unless the -a option was specified.

       -X regex
              Exclude log entries which match the specified regular expression.

       -x tag Exclude log entries with the specified tag.

SEE ALSO

       • varnishd(1)

       • varnishlog(1)

       • varnishncsa(1)

       • varnishstat(1)

       • 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 Smørgrav.

COPYRIGHT

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

       • Copyright (c) 2006 Verdens Gang AS

       • Copyright (c) 2006-2011 Varnish Software AS

AUTHOR

       Dag-Erling Smørgrav

1.0                                                2010-05-31                                     VARNISHHIST(1)