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[Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust traci
From: |
Mohamad Gebai |
Subject: |
[Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing |
Date: |
Mon, 14 Oct 2013 14:35:53 -0400 |
Signed-off-by: Mohamad Gebai <address@hidden>
---
docs/tracing.txt | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/docs/tracing.txt b/docs/tracing.txt
index bfc261b..64683db 100644
--- a/docs/tracing.txt
+++ b/docs/tracing.txt
@@ -214,6 +214,37 @@ The "ust" backend uses the LTTng Userspace Tracer library.
There are no
monitor commands built into QEMU, instead UST utilities should be used to list,
enable/disable, and dump traces.
+Package lttng-tools is required for userspace tracing. After running Qemu,
LTTng
+should be able to list all available events:
+
+ lttng list -u
+
+Create tracing session:
+
+ lttng create mysession
+
+Enable events:
+
+ lttng enable-event qemu:g_malloc -u
+
+Where the events can either be a comma-separated list of events, or "-a" to
+enable all tracepoint events. Start and stop tracing as needed:
+
+ lttng start
+ lttng stop
+
+View the trace:
+
+ lttng view
+
+Destroy tracing session:
+
+ lttng destroy
+
+Babeltrace can be used at any later time to view the trace:
+
+ babeltrace $HOME/lttng-traces/mysession-<date>-<time>
+
=== SystemTap ===
The "dtrace" backend uses DTrace sdt probes but has only been tested with
--
1.7.10.4
- [Qemu-devel] [RFC PATCH v3 0/5] Fix UST backend for LTTng 2.x, Mohamad Gebai, 2013/10/14
- [Qemu-devel] [RFC PATCH v3 2/5] Modified the tracet ool framework for LTTng 2.x., Mohamad Gebai, 2013/10/14
- [Qemu-devel] [RFC PATCH v3 1/5] Fix configure script for LTTng 2.x, Mohamad Gebai, 2013/10/14
- [Qemu-devel] [RFC PATCH v3 3/5] Adapt Makefiles to the new LTTng ust interface., Mohamad Gebai, 2013/10/14
- [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing,
Mohamad Gebai <=
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Alex Bennée, 2013/10/15
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Mohamad Gebai, 2013/10/15
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Alex Bennée, 2013/10/16
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Mohamad Gebai, 2013/10/16
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Alex Bennée, 2013/10/17
- Re: [Qemu-devel] [RFC PATCH v3 4/5] Update documentation for LTTng ust tracing, Mohamad Gebai, 2013/10/18
[Qemu-devel] [RFC PATCH v3 5/5] Add ust generated files to .gitignore, Mohamad Gebai, 2013/10/14