3 <center><big><big>LTTV & LTTng roadmap
<small><small></center>
6 Here are the roadmaps for the LTTV and LTTng development. I use a priority indice
7 for the TODO items :
<br>
8 (
1) : very high priority
<br>
9 (
10): lowest priority
<br>
12 Dependencies are written between brackets [ ].
<br>
13 The # symbol marks who is currently working on the item.
<br>
14 The % symbol marks who is interested in the realisation of the item.
<br>
16 <big>LTTV Roadmap
<small><br>
19 (
3) Make LTTV aware of type formats (visual separators) defined in the XML
21 (
3) Use a per architecture enumeration for traps.
<br>
22 (
4) Add event specific fields support to filter.
<br>
23 (
4) Add a periodic event interval view. (useful to verify event periodicity)
<br>
24 (
4) create a graphical per cpu activity view.
<br>
25 (
5) Add Python scripting hooks.
<br>
26 (
5) Flight recorder : start lttd automatically upon GUI trace control stop.
<br>
27 (
5) Automatically detect traces with too much processes and disable faulty operations.
<br>
28 (
5) Event sequence detector (inspired from regular expressions).
<br>
29 (
7) Create a hardware counter viewer (low cost rate counters : L1 cache miss,
30 page faults, interrupts...). This will be a generalisation of the event rate
31 view into a view of the evolution of a user definable event field.
<br>
32 (
10) Add cancel button to LTTV filter GUI window.
35 <big>LTT Next Generation Roadmap
<small><br>
38 (
4) Add Xen support.
<br>
39 #
<A HREF=
"mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers
</A><br>
40 #
<A HREF=
"mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari
</A><br>
41 (
4) efficient dynamic event filtering while recording trace.
<br>
42 % Sensis Corp.
<A HREF=
"mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish
</A><br>
43 (
4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.
<br>
44 (
4) integrate NPTL instrumentation (see
45 <A HREF=
"http://nptltracetool.sourceforge.net/">PTT
</A>).
<br>
46 (
5) Support CPUs with scalable frequency.
<br>
47 (
5) Integrate LTTng and lttd with LKCD.
<br>
48 (
7) Integrate periodical dump of perfctr hardware counters.
<br>
49 (
8) Integrate periodical dump of SystemTAP computed information.
<br>
50 (
8) Integrate SystemTAP logging with LTTng.
<br>
51 (
9) Add support for setjmp/longjmp and jump tables instrumentation to
52 ltt-instrument-functions.
<br>
53 (
9) Make ltt-usertrace-fast support internal heartbeat timer.
<br>
54 (
3) port LTTng to :
<br>
56 #
<A HREF=
"mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers
</A><br>
59 #Autodesk
<A HREF=
"mailto:Francois L'Archeveque <fla@discreet.com>">Francois
60 L'Archeveque
</A> for
2.6.9 RedHat Enterprise (patch available in contrib, still
61 has to be ported to
2.6.14, thanks!)
<BR>
62 #Wind River for
2.6.14<BR>
65 #Wind River for
2.6.14<BR>
71 %Wind River for
2.6.14<BR>
76 * TODO (low priority)
<br>
77 enhance RPM packages for lttng kernel
<br>
78 Integrate header generation (genevent) in kernel build system.
<br>
79 Find a different way to printk from instrumentation : forbidden from schedule
80 and wakeup (causes a deadlock). -
> Modify printk so it uses LTTng tracer!
<br>
81 Export channels via network sockets instead of writing them to disk.
<br>
82 Export buffers with time constraint for
"live" visualisation. Use
83 ltt_force_switch periodically from a timer to insure slow channels do not
84 interfere with viewing.
<br>
85 Have an optional round-robin mode to write information into multiple channels
86 from the same source.
<br>
88 * Need to be discussed
<br>
89 Use
2.6.14 RelayFS control files.
<br>
90 Drop ltt-module-register and ltt-module-unregister, use exported variables.
<br>
91 drop ltt_filter_control, use functions pointers instead.
<br>
92 Merge facilities headers into one big header.
<br>
93 Change the name of XML files from XML to something else.
<br>
94 Remove ltt-base.c.
<br>
97 * lttng patch division (
0.5.10+) :
<br>
99 instrumentation.diff
<br>
100 instrumentation-arm.diff
<br>
101 instrumentation-i386.diff
<br>
102 instrumentation-mips.diff
<br>
103 instrumentation-powerpc.diff
<br>
104 instrumentation-ppc.diff
<br>
105 instrumentation-s390.diff
<br>
106 instrumentation-sh.diff
<br>
107 ltt-facilities-headers.diff
<br>
108 ltt-facilities-loader.diff
<br>
109 ltt-facilities.diff
<br>
115 Mathieu Desnoyers
<br>