VARNISHHIST(1)VARNISHHIST(1)NAMEvarnishhist - Varnish request histogram
SYNOPSISvarnishhist [-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|off>] [-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 verti‐
cal 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 syn‐
thesized when this happens. This setting keeps an upper bound on
the memory usage of running queries. Defaults to 1000 transac‐
tions.
-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 "responsetime" 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. 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 connec‐
tion will not fail, allowing the utility to start and wait inde‐
finetely for the Varnish instance to appear. Defaults to 5 sec‐
onds.
-T seconds
Sets the transaction timeout in seconds. This defines the maxi‐
mum 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
· varnishd(1)
· varnishlog(1)
· varnishncsa(1)
· varnishstat(1)
· varnishtop(1)HISTORY
The varnishhist utility was developed by Poul-Henning Kamp in coopera‐
tion 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) 2006-2015 Varnish Software AS
VARNISHHIST(1)
