xenial (1) varnishtop.1.gz

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  name]  [-N  filename]  [-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     Start processing log records at the head of the log instead of the tail.

       -f     Sort and group only on the first field of each log entry. This  is  useful  when  displaying  e.g.
              stataddr 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.

              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 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 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.

       -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.

       -V     Print version information and exit.

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)