From ee33438f2863a9e6c1e966791378a8eded78f168 Mon Sep 17 00:00:00 2001 From: compudj Date: Wed, 20 Feb 2008 16:06:55 +0000 Subject: [PATCH] update quickstart git-svn-id: http://ltt.polymtl.ca/svn@2819 04897980-b3bd-0310-b5e0-8ef037075253 --- ltt/branches/poly/QUICKSTART | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/ltt/branches/poly/QUICKSTART b/ltt/branches/poly/QUICKSTART index f3501ac0..0cc1cd2c 100644 --- a/ltt/branches/poly/QUICKSTART +++ b/ltt/branches/poly/QUICKSTART @@ -419,7 +419,7 @@ of the events to the clipboard and paste them in the GUI by clicking on the bottom right label "Current time". Support for this type of filtering should be added to the filter module soon. -* Flight recorder mode +* Hybrid mode Starting from LTTng 0.5.105 and ltt-control 0.20, a new mode can be used : hybrid. It can be especially useful when studying big workloads on a long period @@ -444,6 +444,19 @@ instance, thread branding events are actually considered a "high rate" event when it should be considered "medium rate". The same should apply for the state dump process enumeration. +* Flight recorder mode + +The flight recorder mode writes data into overwritten buffers for all channels, +including control channels, except for the facilities tracefiles. + +The following lttctl commands take a flight recorder trace : + +Create trace channel, start lttd on normal channels, start tracing: +lttctl -n tracename -d -l /mnt/relayfs/ltt -t /tmp/trace1 -m flight + +Stop tracing, start lttd on flight recorder channels, destroy trace channels : +lttctl -n tracename -f -l /mnt/relayfs/ltt -t /tmp/trace1 -m flight + *********************************************************** ** Section 4 * Adding new instrumentations with genevent ** -- 2.34.1