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TCP RTT Plugin

A plugin that displays the average TCP Round Trip Time for a host.

Prerequisites
  • Supported OS: Linux, OS X
  • TrueSight Pulse meter 4.5.0-778 or later
To install a new meter, go to 'Settings-> Installation' or see instructions.
To upgrade the meter to the latest version, see instructions
 
Metrics Collected:
  • TCP RTT
Enabling the TCP timestamp on your computer

In order to provide the TCP round trip time metric, the optional TCP timestamp settings must be enabled on the target computer. Depending on the Operating System, it may or may not be enabled by default. The table below shows the supported Operating Systems and the command used to enable the flag.

Operating System Enable Command Default setting
OS/X 10.8 to 10.10 sudo sysctl net.inet.tcp.rfc1323=1 Enabled
OS/X 10.11 Unknown - feature was removed Unknown
Ubuntu echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
CentOS echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
FreeBSD sudo sysctl net.inet.tcp.rfc1323=1 Enabled
Ubuntu echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
ArchLinux echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
OpenSuse echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
Alpine echo 1 > /proc/sys/net/ipv4/tcp_timestamps Enabled
 
Installing the plugin
 
1) Log into Pulse.
 
2) Go to Settings > Plugins.
 
3) Click on 'Get Plugins'.
 
4) Scroll to 'tcprtt' and click 'Install'.
 
5) Pulse provides a list of meters to associate to the plugin. Select a meter.
 
6) The "Add a plugin..." drop down box will display. Click and select 'tcprtt'.
 
7) Type the required details. Use the available tool-tips for help. Click 'OK'.
 
Field Name Description
Source The source to display in the legend. The host name of the computer is displayed if you do not specify a value.
Polling Interval The frequency at which the metrics are collected from the computer.
 
The following dashboard will be created:
  • TCP RTT
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