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Varnish log entry ranking
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:Author: Dag-Erling Smørgrav
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varnishtop [-1] [-b] [-C] [-c] [-d] [-f] [-I regex]
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[-i tag] [-n varnish_name] [-r file] [-V] [-X regex]
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The varnishtop utility reads varnishd(1) shared memory logs and
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presents a continuously updated list of the most commonly occurring
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log entries. With suitable filtering using the -I, -i, -X and -x
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options, it can be used to display a ranking of requested documents,
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clients, user agents, or any other information which is recorded in
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The following options are available:
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-1 Instead of presenting of a continuously updated display,
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print the statistics once and exit. Implies -d.
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-b Include log entries which result from communication
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with a backend server. If neither -b nor -c is
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specified, varnishtop acts as if they both were.
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-C Ignore case when matching regular expressions.
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-c Include log entries which result from communication
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with a client. If neither -b nor -c is specified,
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varnishtop acts as if they both were.
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-d Process old log entries on startup. Normally, varnishtop
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will only process entries which are written to the log
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-f Sort and group only on the first field of each log entry.
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This is useful when displaying e.g. stataddr entries,
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where the first field is the client IP address.
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-I regex Include log entries which match the specified regular
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expression. If neither -I nor -i is specified, all log
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-i tag Include log entries with the specified tag. If neither -I
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nor -i is specified, all log entries are included.
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-n Specifies the name of the varnishd instance to get logs from.
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If -n is not specified, the host name is used.
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-r file Read log entries from file instead of shared memory.
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-V Display the version number and exit.
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-X regex Exclude log entries which match the specified regular expression.
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-x tag Exclude log entries with the specified tag.
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The following example displays a continuously updated list of the most
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frequently requested URLs:::
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The following example displays a continuously updated list of the most
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commonly used user agents:::
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varnishtop -i RxHeader -C -I ^User-Agent
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The varnishtop utility was originally developed by Poul-Henning Kamp
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in cooperation with Verdens Gang AS and Linpro AS, and later
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substantially rewritten by Dag-Erling Smørgrav. This manual page was
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written by Dag-Erling Smørgrav.
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This document is licensed under the same licence as Varnish
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itself. See LICENCE for details.
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* Copyright (c) 2006 Verdens Gang AS
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* Copyright (c) 2006-2008 Linpro AS
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* Copyright (c) 2008-2010 Redpill Linpro AS
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* Copyright (c) 2010 Varnish Software AS
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doc/sphinx/reference/varnishtop.rst
