varnishtop

Varnish log entry ranking

Author:Dag-Erling Smørgrav
Date:2010-05-31
Version:1.0
Manual section:1

SYNOPSIS

varnishtop [-1] [-b] [-C] [-c] [-d] [-f] [-I regex] [-i tag] [-n varnish_name] [-r file] [-V] [-X regex] [-x tag]

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 presenting of a continuously updated display, print the statistics once and exit. Implies -d.
-b Include log entries which result from communication with a backend server. If neither -b nor -c is specified, varnishtop 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, varnishtop acts as if they both were.
-d Process old log entries on startup. Normally, varnishtop will only process entries which are written to the log after it starts.
-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.
-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.
-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.
-X regex Exclude log entries which match the specified regular expression.
-x tag Exclude log entries with the specified tag.

EXAMPLES

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

varnishtop -i RxURL

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

varnishtop -i RxHeader -C -I ^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 Linpro AS, and later substantially rewritten by Dag-Erling Smørgrav. This manual page was written by Dag-Erling Smørgrav.

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