-lttngtop
-Julien Desfossez <julien.desfossez@polymtl.ca>
-August 2011
+Project Status
+--------------
+
+LTTngTop is not currently maintained. Those interested in supporting continued
+efforts on this or other LTTng projects may contact
+EfficiOS <mailto:sales@efficios.com>`_.
+
+
+ABOUT
+-----
+LTTngTop
+Julien Desfossez <jdesfossez@efficios.com>
+June 2015
Lttngtop is an ncurses interface for reading and browsing traces recorded by
the LTTng tracer and displaying various statistics.
-As of now, the cpu usage and perf counters are displayed. This version currently
-only supports offline traces, but a live version is in alpha and will be
-available for testing soon.
+As of now, the cpu usage, per file/process I/O bandwidth and perf counters are
+displayed. This release is the first one that handles live sessions as well as
+offline sessions.
USAGE
-----
-Record a trace with LTTng 2.0 with at least the sched_switch event, and the pid,
-procname, tid, ppid contexts. To have the perftop view working you can enable
-any number of perf contexts (depending on your hardware).
-For the iotop view, you need to have some syscall events : sys_read, sys_write
-and exit_syscall.
-
-Once your trace is recorded, you can use lttngtop this way :
-$ lttngtop /path/to/your/trace
-
-Make sure you have read permissions on the whole directory.
-
-NOTE
-----
-
-Since this is an early release of lttngtop, it is still inside the babeltrace
-source tree. As soon as all babeltrace dependencies are available from the
-library and header files, lttngtop will be in its own repository. Until then,
-changes in the babeltrace source tree will be merged in this tree to avoid
-conflicts. This repository doesn't install the babeltrace binary, or any of its
-libraries. This way you can safely install it in the default locations.
-
-EXAMPLE
--------
-
-# lttng create lttngtop
-# lttng enable-event -k sched_switch
-# lttng add-context -k -t pid -t procname -t tid -t ppid -t perf:cache-misses \
- -t perf:major-faults -t perf:branch-load-misses
-# lttng start
-# ...do stuff...
-# lttng stop
-# lttng destroy
-
-$ lttngtop $HOME/lttng-traces/lttngtop-...
+The manpage located in the doc folder of this source tree documents the usage
+of LTTngTop.
BUILDING
--------
DEPENDENCIES
------------
-To compile Babeltrace and lttngtop, you will need:
+To compile Babeltrace and lttngtop, you need:
gcc 3.2 or better
libc6 development librairies
glib 2.22 or better development libraries
(Debian : libglib2.0-0, libglib2.0-dev)
(Fedora : glib2, glib2-devel)
- uuid development libraries
- (Debian : uuid-dev)
- (Fedora : uuid-devel)
libpopt >= 1.13 development libraries
(Debian : libpopt-dev)
(Fedora : popt)
ncurses development libraries
(Debian : libncurses5-dev)
+ babeltrace = 1.2.4 development library
+ (Debian : libbabeltrace-dev, libbabeltrace-ctf-dev)
+
+To use the local live tracing feature, you need:
+ lttng-tools >= 2.4
+ lttng-modules >= 2.4
+ babeltrace = 1.2.4
For developers using the git tree:
(make sure your system wide "automake" points to a recent version!)
- GNU Libtool >=2.2
(for more information, go to http://www.gnu.org/software/autoconf/)
-- Flex >=2.5.35.
-- Bison >=2.4.
If you get the tree from the repository, you will need to use the "bootstrap"
script in the root of the tree. It calls all the GNU tools needed to prepare the
projects / lttngtop.git / blobdiff