varnishhist

Varnish request histogram

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

SYNOPSIS

varnishhist [-b] [-C] [-c] [-d] [-I regex] [-i tag] [-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.
-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 Linpro AS. This manual page was written by Dag-Erling Smørgrav.

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