Difference between revisions of "VPP/g2"

Revision as of 18:43, 12 February 2016

Introduction

G2 is a fine-grained event-log viewer. It's highly scalable, supporting O(1e7 events) and O(1e3 discrete display "tracks"). G2 displays binary data generated by the vppinfra "elog.[ch]" logger component. G2 also supports for the CPEL file format, described here.

Usage

$ cd build-root
$ make g2-install
$ ./install-native/g2/bin/g2 --help
g2 [--ticks-per-us <value>][--cpel-input <filename>] [--clib-input <filename]>
G2 (x86_64 GNU/Linux) major version 3.0
Built Wed Feb  3 10:58:12 EST 2016

When viewing a ".cpel" file, use "g2 --cpel <filename>". When viewing a vppinfra event log, use "g2 --clib <filename>".

Setting Display Preferences

The file $HOMEDIR/.g2 contains display preferences, which can be overridden. Simply un-comment one of the stanzas shown below, or experiment as desired.

/*
 * Property / parameter settings for G2
 *
 * Setting for a 1024x768 display:
 * event_selector_lines=20
 * drawbox_height=800
 * drawbox_width=600
 * 
 * new mac w/ no monitor:
 * event_selector_lines=20
 * drawbox_height=1200
 * drawbox_width=700
 *
 * 1600x1200:
 * drawbox_width=1200
 * drawbox_height=1000
 * event_selector_lines=25
 * 
 * for making screenshots on a Macbook Pro
 * drawbox_width=1200
 * drawbox_height=600
 * event_selector_lines=20
 */

Screen Taxonomy

Here is an annotated G2 viewer screenshot, corresponding to activity during BGP prefix download. These data were captured on a Cisco IOS-XR system: