[lttv.git] / trunk / lttv / doc / developer / lttng-lttv-roadmap.html

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<center><big><big>LTTV & LTTng roadmap<small><small></center>
<br>
<br>
Here are the roadmaps for the LTTV and LTTng development. I use a priority indice
for the TODO items :<br>
(1) : very high priority<br>
(10): lowest priority<br>
<br>
<br>
Dependencies are written between brackets [ ].<br>
The # symbol marks who is currently working on the item.<br>
The % symbol marks who is interested in the realisation of the item.<br>
<br>
<big>LTTV Roadmap<small><br>
<br>
* TODO<br>
(3) Add cluster support.<br>
	# <A HREF="mailto:Eric Clement <eric.clement@polymtl.ca>">Eric Clement</A><br>
(3) Make LTTV aware of type formats (visual separators) defined in the XML
file.<br>
	# <A HREF="mailto:Gabriel Matni <gabrien.matni@polymtl.ca>">Gabriel Matni</A><br>
(4) Statistics per time window.<br>
(4) Add Xen per physical CPU view.<br>
(4) Add Xen per vcpu view.<br>
(4) Disable plugins when threshold reached (i.e. too much process in control
flow view). Draw, and, when the threshold is reached, stop drawing. The global
statistics view can inhibit showing the per process stats.<br>
(4) Add a visual artifact : PID 0 could be named swapper instead of UNNAMED for
cpus > 0.<br>
(4) Add event specific fields support to filter.<br>
(4) Add a periodic event interval view. (useful to verify event periodicity)<br>
(4) create a graphical per cpu activity view.<br>
(4) Filter by target process.<br>
(4) Compensate for time spent in probes in LTTV analysis.<br>
(4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br>
(4) Add sort by process priority in the control flow view (must also instrument
priority information of the processes).<br>
% Airbus<br>
(5) Add Python scripting hooks.<br>
(5) Add GUI interface to take an hybrid trace.<br>
(5) Flight recorder : start lttd automatically upon GUI trace control stop.<br>
(5) Automatically detect traces with too much processes and disable faulty operations.<br>
(5) Event sequence detector (inspired from regular expressions).<br>
(7) Create a hardware counter viewer (low cost rate counters : L1 cache miss,
page faults, interrupts...). This will be a generalisation of the event rate
view into a view of the evolution of a user definable event field.<br>
<br>
* TO FIX<br>
(10) Add cancel button to LTTV filter GUI window.<br>
(10) Sometimes, in the control flow view, a process with 0 creation time is
created in addition to the real process itself. Seems to be caused by end of
process life.<br>
(10) Statistics do not take in account the time spent in the mode present at
the beginning of the trace. Example : real time spent in system call on behalf
of process 0.<br>
<br>
<br>
<big>LTT Next Generation Roadmap<small><br>
<br>
* TODO<br>
(1) Dump mounts.<br>
(1) Bring userspace tracing in sync with new lttng.<br>
(1) Bring stack dump in sync with new lttng.<br>
(1) efficient dynamic event filtering while recording trace.<br>
	% Google<br>
	% Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
	- Partly implemented: per marker selection through /proc interface.<br>
	- Must still implement per active trace filtering.<br>
(1) Add Xen support. (Trace buffer desallocation needs to be fixed)<br>
	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
(1) Integrate SystemTAP logging with LTTng.<br>
(4) instrument kernel bottom half irqsave, seqlocks, semaphores, mutexes, brlock.<br>
(4) integrate NPTL instrumentation (see
<A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
(4) Probe calibration kernel module.<br>
(4) Make page faults detect nested fault without nesting 4 times in the page
fault handler.<br>
(5) Support CPUs with scalable frequency.<br>
(5) Add boot time tracing support.<br>
(5) Integrate LTTng and lttd with LKCD.<br>
(7) Integrate periodical dump of perfctr hardware counters.<br>
(8) Integrate periodical dump of SystemTAP computed information.<br>
(9) Add support for setjmp/longjmp and jump tables instrumentation to
ltt-instrument-functions.<br>
(9) Make ltt-usertrace-fast support internal heartbeat timer.<br>
(3) port LTTng to :<br>
alpha<BR>
user-mode Linux<BR>
Xen<BR>
# IBM<BR>
S/390<BR>
RTLinux<BR>
% Wind River for 2.6.14<BR>
sparc64<BR>
# Wind River<BR>
sh4<br>
<br>
<br>
<br>
* TODO (low priority)<br>
enhance RPM packages for lttng kernel<br>
Integrate header generation (genevent) in kernel build system.<br>
Export channels via network sockets instead of writing them to disk.<br>
Export buffers with time constraint for "live" visualisation. Use
ltt_force_switch periodically from a timer to insure slow channels do not
interfere with viewing.<br>
Have an optional round-robin mode to write information into multiple channels
from the same source.<br>
<br>
* Need to be discussed<br>
Use 2.6.14 RelayFS control files.<br>
Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
drop ltt_filter_control, use functions pointers instead.<br>
Merge facilities headers into one big header.<br>
Change the name of XML files from XML to something else.<br>
Remove ltt-base.c.<br>
<br>
Mathieu Desnoyers<br>


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Commit	Line	Data
1f2c88b1	1	<html>
1f2c88b1	2	<body>
e3a30a9e	3	<center><big><big>LTTV & LTTng roadmap<small><small></center>
674fa3b3	4	<br>
674fa3b3	5	<br>
5e11a375	6	Here are the roadmaps for the LTTV and LTTng development. I use a priority indice
fc5993d2	7	for the TODO items :<br>
90d65afc	8	(1) : very high priority<br>
90d65afc	9	(10): lowest priority<br>
fc5993d2	10	<br>
fc5993d2	11	<br>
6b18b620	12	Dependencies are written between brackets [ ].<br>
59656e3f	13	The # symbol marks who is currently working on the item.<br>
e565223b	14	The % symbol marks who is interested in the realisation of the item.<br>
59656e3f	15	<br>
c8a111eb	16	<big>LTTV Roadmap<small><br>
	17	<br>
	18	* TODO<br>
162990b3	19	(3) Add cluster support.<br>
162990b3	20	# <A HREF="mailto:Eric Clement <eric.clement@polymtl.ca>">Eric Clement</A><br>
ef19b009	21	(3) Make LTTV aware of type formats (visual separators) defined in the XML
ef19b009	22	file.<br>
9f8804eb	23	# <A HREF="mailto:Gabriel Matni <gabrien.matni@polymtl.ca>">Gabriel Matni</A><br>
3ccb19e4	24	(4) Statistics per time window.<br>
ea53f068	25	(4) Add Xen per physical CPU view.<br>
ea53f068	26	(4) Add Xen per vcpu view.<br>
3ccb19e4	27	(4) Disable plugins when threshold reached (i.e. too much process in control
	28	flow view). Draw, and, when the threshold is reached, stop drawing. The global
	29	statistics view can inhibit showing the per process stats.<br>
568c21ab	30	(4) Add a visual artifact : PID 0 could be named swapper instead of UNNAMED for
568c21ab	31	cpus > 0.<br>
16fe6efa	32	(4) Add event specific fields support to filter.<br>
6ed34001	33	(4) Add a periodic event interval view. (useful to verify event periodicity)<br>
2d569f51	34	(4) create a graphical per cpu activity view.<br>
e6284587	35	(4) Filter by target process.<br>
cdee9265	36	(4) Compensate for time spent in probes in LTTV analysis.<br>
568c21ab	37	(4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br>
42c475ad	38	(4) Add sort by process priority in the control flow view (must also instrument
	39	priority information of the processes).<br>
	40	% Airbus<br>
b35779fc	41	(5) Add Python scripting hooks.<br>
80f91a14	42	(5) Add GUI interface to take an hybrid trace.<br>
b0a1cd56	43	(5) Flight recorder : start lttd automatically upon GUI trace control stop.<br>
caf22319	44	(5) Automatically detect traces with too much processes and disable faulty operations.<br>
b0a1cd56	45	(5) Event sequence detector (inspired from regular expressions).<br>
c5cab5d9	46	(7) Create a hardware counter viewer (low cost rate counters : L1 cache miss,
	47	page faults, interrupts...). This will be a generalisation of the event rate
	48	view into a view of the evolution of a user definable event field.<br>
b85b85e5	49	<br>
162990b3	50	* TO FIX<br>
b85b85e5	51	(10) Add cancel button to LTTV filter GUI window.<br>
	52	(10) Sometimes, in the control flow view, a process with 0 creation time is
	53	created in addition to the real process itself. Seems to be caused by end of
	54	process life.<br>
5355b763	55	(10) Statistics do not take in account the time spent in the mode present at
	56	the beginning of the trace. Example : real time spent in system call on behalf
	57	of process 0.<br>
c8a111eb	58	<br>
c8a111eb	59	<br>
c8a111eb	60	<big>LTT Next Generation Roadmap<small><br>
0c4b3d55	61	<br>
c8a111eb	62	* TODO<br>
631e8368	63	(1) Dump mounts.<br>
	64	(1) Bring userspace tracing in sync with new lttng.<br>
	65	(1) Bring stack dump in sync with new lttng.<br>
9675a7c5	66	(1) efficient dynamic event filtering while recording trace.<br>
b8597f4b	67	% Google<br>
9675a7c5	68	% Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
9675a7c5	69	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
e0bf2461	70	- Partly implemented: per marker selection through /proc interface.<br>
e0bf2461	71	- Must still implement per active trace filtering.<br>
9675a7c5	72	(1) Add Xen support. (Trace buffer desallocation needs to be fixed)<br>
ea53f068	73	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
00748255	74	(1) Integrate SystemTAP logging with LTTng.<br>
e0bf2461	75	(4) instrument kernel bottom half irqsave, seqlocks, semaphores, mutexes, brlock.<br>
1e5a121c	76	(4) integrate NPTL instrumentation (see
1e5a121c	77	<A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
cdee9265	78	(4) Probe calibration kernel module.<br>
a7bdb436	79	(4) Make page faults detect nested fault without nesting 4 times in the page
a7bdb436	80	fault handler.<br>
3f43b8fb	81	(5) Support CPUs with scalable frequency.<br>
dbcdc489	82	(5) Add boot time tracing support.<br>
2a341212	83	(5) Integrate LTTng and lttd with LKCD.<br>
575b7e97	84	(7) Integrate periodical dump of perfctr hardware counters.<br>
cc5ce8a0	85	(8) Integrate periodical dump of SystemTAP computed information.<br>
9fd0275c	86	(9) Add support for setjmp/longjmp and jump tables instrumentation to
451c9b19	87	ltt-instrument-functions.<br>
51096bff	88	(9) Make ltt-usertrace-fast support internal heartbeat timer.<br>
6b18b620	89	(3) port LTTng to :<br>
e565223b	90	alpha<BR>
	91	user-mode Linux<BR>
	92	Xen<BR>
841c926b	93	# IBM<BR>
e565223b	94	S/390<BR>
d804e215	95	RTLinux<BR>
d804e215	96	% Wind River for 2.6.14<BR>
9675a7c5	97	sparc64<BR>
9675a7c5	98	# Wind River<BR>
db7e253c	99	sh4<br>
0c4b3d55	100	<br>
15e89ad6	101	<br>
b720b182	102	<br>
b720b182	103	* TODO (low priority)<br>
cbe85414	104	enhance RPM packages for lttng kernel<br>
b720b182	105	Integrate header generation (genevent) in kernel build system.<br>
63eeefc3	106	Export channels via network sockets instead of writing them to disk.<br>
63eeefc3	107	Export buffers with time constraint for "live" visualisation. Use
6b18b620	108	ltt_force_switch periodically from a timer to insure slow channels do not
63eeefc3	109	interfere with viewing.<br>
44397e24	110	Have an optional round-robin mode to write information into multiple channels
44397e24	111	from the same source.<br>
b720b182	112	<br>
15e89ad6	113	* Need to be discussed<br>
af3cfedc	114	Use 2.6.14 RelayFS control files.<br>
b720b182	115	Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
b720b182	116	drop ltt_filter_control, use functions pointers instead.<br>
b720b182	117	Merge facilities headers into one big header.<br>
	118	Change the name of XML files from XML to something else.<br>
	119	Remove ltt-base.c.<br>
	120	<br>
b720b182	121	Mathieu Desnoyers<br>
1f2c88b1	122
	123
	124	</body>
	125	</html>