NAME¶
varnishhist - Varnish request histogram
SYNOPSIS¶
varnishhist [-C] [-d] [-g <request|vxid>] [-h] [-L limit] [-n name] [-N
filename] [-p period] [-P <size|responsetime|tag:field_num:min:max>] [-q
query] [-r filename] [-T seconds] [-V]
DESCRIPTION¶
The varnishhist utility reads
varnishd(1) shared memory logs and presents a
continuously updated histogram showing the distribution of the last N requests
by their processing. The value of N and the vertical scale are displayed 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:
- -C
- Do all regular expression and string matching caseless.
- -d
- Start processing log records at the head of the log instead of the
tail.
- -g <request|vxid>
- The grouping of the log records. The default is to group by vxid.
- -h
- Print program usage and exit
- -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 between screen refreshes. Default is 1
second, and can be changed at runtime by pressing the [1-9] keys.
- -P <size|responsetime|tag:field_num:min:max>
- Either specify "size" or "responstime" profile or
create a new one. Define the tag we'll look for, and the field number of
the value we are interested in. min and max are the boundaries of the
graph (these are power of tens).
- -q query
- Specifies the VSL query to use.
- -r filename
- Read log in binary file format from this file.
- -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.
- -V
- Print version information and exit.
SEE ALSO¶
HISTORY¶
The varnishhist utility was developed by Poul-Henning Kamp in cooperation with
Verdens Gang AS and Varnish Software AS. This manual page was written by
Dag-Erling Smørgrav.
COPYRIGHT¶
This document is licensed under the same licence as Varnish itself. See LICENCE
for details.
- •
- Copyright (c) 2006 Verdens Gang AS
- •
- Copyright (c) 2006-2014 Varnish Software AS