NAME

       varnishtop - Varnish log entry ranking

SYNOPSIS

       varnishtop  [-1]  [-b]  [-c]  [-C]  [-d]  [-f]  [-g  <session|request|vxid|raw>]  [-h] [-i <taglist>] [-I
       <[taglist:]regex>] [-L <limit>] [-n <dir>] [-p <period>] [-q <query>] [-r <filename>] [-t  <seconds|off>]
       [-T <seconds>] [-x <taglist>] [-X <[taglist:]regex>] [-V]

DESCRIPTION

       The  varnishtop  utility reads varnishd(1) shared memory logs and presents a continuously updated list of
       the most commonly occurring log entries.  With suitable filtering using the -I, -i, -X and -x options, it
       can  be  used to display a ranking of requested documents, clients, user agents, or any other information
       which is recorded in the log.

       The following options are available:

       -1     Instead of a continuously updated display, print the statistics once and exit. Implies -d.

       -b     Only display transactions and log records coming from backend communication.

       -c     Only display transactions and log records coming from client communication.

       -C     Do all regular expression and string matching caseless.

       -d     Process log records at the head of the log.

       -f     Sort and group only on the first field of each log entry. For log  entries  in  the  form  prefix:
              value  it  is  the  prefix  without  the  colon  that  is  sorted and grouped. This is useful when
              displaying e.g. ReqStart entries, where the first field is the client IP address.

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

       -h     Print program usage and exit

       -i <taglist>
              Include log records of these tags in output. Taglist is  a  comma-separated  list  of  tag  globs.
              Multiple -i options may be given.

              If  a  tag  include  option  is  the first of any tag selection options, all tags are first marked
              excluded.

       -I <[taglist:]regex>
              Include by regex matching. Output only records matching taglist and regular expression. Applies to
              any tag if taglist is absent. Multiple -I options may be given.

              If  a  tag  include  option  is  the first of any tag selection options, all tags are first marked
              excluded.

       -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 <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.

       -p <period>
              Specified  the  number  of seconds to measure over, the default is 60 seconds. The first number in
              the list is the average number of requests seen over this time period. This option has  no  effect
              if -1 option is also used.

       -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.

       -x <taglist>
              Exclude  log  records  of  these  tags  in output. Taglist is a comma-separated list of tag globs.
              Multiple -x options may be given.

       -X <[taglist:]regex>
              Exclude by regex matching. Do not output records matching taglist and regular expression.  Applies
              to any tag if taglist is absent. Multiple -X options may be given.

       -V     Print version information and exit.

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

EXAMPLES

       The following example displays a continuously updated list of the most frequently requested URLs:

          varnishtop -i ReqURL

       The following example displays a continuously updated list of the most commonly used user agents:

          varnishtop -C -I ReqHeader:User-Agent

SEE ALSO

       • varnishd(1)

       • varnishhist(1)

       • varnishlog(1)

       • varnishncsa(1)

       • varnishstat(1)

HISTORY

       The  varnishtop utility was originally developed by Poul-Henning Kamp in cooperation with Verdens Gang AS
       and Varnish Software AS, and later substantially rewritten by Dag-Erling Smørgrav.  This manual page  was
       written by Dag-Erling Smørgrav, and later updated by Martin Blix Grydeland.

COPYRIGHT

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

       • Copyright (c) 2006 Verdens Gang AS

       • Copyright (c) 2006-2015 Varnish Software AS

                                                                                                   VARNISHTOP(1)