LTTV & LTTng roadmap

Here are the roadmaps for the LTTV and LTTng development. I use a priority indice for the TODO items :
(1) : very high priority
(10): lowest priority


Dependencies are written between parenthesis ( ).
The # symbol marks who is currently working on the item.
The % symbol marks who is interested in the realisation of the item.

LTTV Roadmap

* TODO
(4) create a event rate graphical view : Will be useful in conjonction with the filter.
# Parisa Heidari
(7) create an analysis of function time (like a precise gprof)
-> with gcc -f inline-functions
(10) Add cancel button to LTTV filter GUI window.

LTT Next Generation Roadmap

* TODO
(1) Use 2.6.14 RelayFS control files.
(2) add efficient and secure user space tracing. (1 month)
(3) integrate LTTng State Dump : missing irq and process state.
# Jean-Hugues Deschenes
(4) efficient dynamic event filtering while recording trace.
% Sensis Corp. Tim Bish
(5) Integrate LTTng and lttd with LKCD.
(7) add gcc -finstrument-functions instrumentation
(3) port LTTng to : (depends on 2.6.14 port)
x86_64
#Autodesk Francois L'Archeveque for 2.6.9 RedHat Enterprise (patch available in contrib, still has to be ported to 2.6.14, thanks!)
%Wind River for 2.6.14
PPC
PPC64
%Wind River for 2.6.14
alpha
user-mode Linux
Xen
MIPS
MIPS64
%Wind River for 2.6.14
ARM
S/390



* TODO (low priority)
enhance RPM packages for lttng kernel
Integrate header generation (genevent) in kernel build system.
Multithreaded lttd.
Find a different way to printk from instrumentation : forbidden from schedule and wakeup (causes a deadlock). -> Modify printk so it uses LTTng tracer!
Export channels via network sockets instead of writing them to disk.
Export buffers with time constraint for "live" visualisation. Use ltt_force_switch periodically from a timer to insure slow channels does not interfere with viewing.

* Need to be discussed
Drop ltt-module-register and ltt-module-unregister, use exported variables.
drop ltt_filter_control, use functions pointers instead.
Merge facilities headers into one big header.
Change the name of XML files from XML to something else.
Remove ltt-base.c.


* lttng patch division (0.4.2+) :

ltt-instrumentation.diff
ltt-facilities-headers.diff
ltt-facilities-loader.diff
ltt-facilities.diff
ltt-relayfs.diff
ltt-core.diff


Mathieu Desnoyers