[lttv.git] / ltt / branches / poly / 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>
(2) Add support for "stop" button in event list. (disabling event request
scheduler)<br>
(2) Finish pre-computing of states to a file.<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>
(3) Use a per architecture enumeration for traps.<br>
(3) Change the byte pair "facility, event" id for a short combining the
informatinon.<br>
(4) Statistics per time window.<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) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br>
(5) Add Python scripting hooks.<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) Event filter : event.time does not work.<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>
(3) Find a way to make logging know when it causes a minor page fault
recursively (without ignoring silently all nested events).<br>
(3) Change the byte pair "facility, event" id for a short combining the
informatinon.<br>
(4) Add Xen support.<br>
	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
	# <A HREF="mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari</A><br>
(4) efficient dynamic event filtering while recording trace.<br>
	% Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
(4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.<br>
(4) Try to use my own non LOCK prefixed version of atomic operations : we are
using per-CPU variables, so it should make it possible.<br>
(4) integrate NPTL instrumentation (see
<A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
(5) Support CPUs with scalable frequency.<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>
(8) Integrate SystemTAP logging with LTTng.<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>
x86_64<BR>
#Autodesk <A HREF="mailto:Francois L'Archeveque <fla@discreet.com>">Francois
L'Archeveque</A> for 2.6.9 RedHat Enterprise (patch available in contrib, still
has to be ported to 2.6.14, thanks!)<BR>
# Wind River for 2.6.14<BR>
PPC<BR>
PPC64<BR>
# Wind River for 2.6.14<BR>
alpha<BR>
user-mode Linux<BR>
Xen<BR>
# IBM<BR>
MIPS<BR>
MIPS64<BR>
% Wind River for 2.6.14<BR>
# Tim Bird <A HREF="mailto:tim.bird@as.sony.com">Tim Bird</A><br>
S/390<BR>
RTLinux<BR>
% Wind River for 2.6.14<BR>
<br>
<br>
<br>
* TODO (low priority)<br>
enhance RPM packages for lttng kernel<br>
Integrate header generation (genevent) in kernel build system.<br>
Find a different way to printk from instrumentation : forbidden from schedule
and wakeup (causes a deadlock). -> Modify printk so it uses LTTng tracer!<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>
<br>
* lttng patch division (0.5.10+) :<br>
<br>
instrumentation.diff<br>
instrumentation-arm.diff<br>
instrumentation-i386.diff<br>
instrumentation-mips.diff<br>
instrumentation-powerpc.diff<br>
instrumentation-ppc.diff<br>
instrumentation-s390.diff<br>
instrumentation-sh.diff<br>
ltt-facilities-headers.diff<br>
ltt-facilities-loader.diff<br>
ltt-facilities.diff<br>
ltt-relayfs.diff<br>
ltt-core.diff<br>
ltt-build.diff<br>
<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>
9f95f0a6	19	(2) Add support for "stop" button in event list. (disabling event request
	20	scheduler)<br>
	21	(2) Finish pre-computing of states to a file.<br>
162990b3	22	(3) Add cluster support.<br>
162990b3	23	# <A HREF="mailto:Eric Clement <eric.clement@polymtl.ca>">Eric Clement</A><br>
ef19b009	24	(3) Make LTTV aware of type formats (visual separators) defined in the XML
ef19b009	25	file.<br>
15b0e8a4	26	(3) Use a per architecture enumeration for traps.<br>
568c21ab	27	(3) Change the byte pair "facility, event" id for a short combining the
568c21ab	28	informatinon.<br>
3ccb19e4	29	(4) Statistics per time window.<br>
	30	(4) Disable plugins when threshold reached (i.e. too much process in control
	31	flow view). Draw, and, when the threshold is reached, stop drawing. The global
	32	statistics view can inhibit showing the per process stats.<br>
568c21ab	33	(4) Add a visual artifact : PID 0 could be named swapper instead of UNNAMED for
568c21ab	34	cpus > 0.<br>
16fe6efa	35	(4) Add event specific fields support to filter.<br>
6ed34001	36	(4) Add a periodic event interval view. (useful to verify event periodicity)<br>
2d569f51	37	(4) create a graphical per cpu activity view.<br>
568c21ab	38	(4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br>
b35779fc	39	(5) Add Python scripting hooks.<br>
b0a1cd56	40	(5) Flight recorder : start lttd automatically upon GUI trace control stop.<br>
caf22319	41	(5) Automatically detect traces with too much processes and disable faulty operations.<br>
b0a1cd56	42	(5) Event sequence detector (inspired from regular expressions).<br>
c5cab5d9	43	(7) Create a hardware counter viewer (low cost rate counters : L1 cache miss,
	44	page faults, interrupts...). This will be a generalisation of the event rate
	45	view into a view of the evolution of a user definable event field.<br>
b85b85e5	46	<br>
162990b3	47	* TO FIX<br>
b85b85e5	48	(10) Event filter : event.time does not work.<br>
	49	(10) Add cancel button to LTTV filter GUI window.<br>
	50	(10) Sometimes, in the control flow view, a process with 0 creation time is
	51	created in addition to the real process itself. Seems to be caused by end of
	52	process life.<br>
5355b763	53	(10) Statistics do not take in account the time spent in the mode present at
	54	the beginning of the trace. Example : real time spent in system call on behalf
	55	of process 0.<br>
c8a111eb	56	<br>
c8a111eb	57	<br>
c8a111eb	58	<big>LTT Next Generation Roadmap<small><br>
0c4b3d55	59	<br>
c8a111eb	60	* TODO<br>
568c21ab	61	(3) Find a way to make logging know when it causes a minor page fault
	62	recursively (without ignoring silently all nested events).<br>
	63	(3) Change the byte pair "facility, event" id for a short combining the
	64	informatinon.<br>
285468d4	65	(4) Add Xen support.<br>
51096bff	66	# <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
285468d4	67	# <A HREF="mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari</A><br>
59ce71d0	68	(4) efficient dynamic event filtering while recording trace.<br>
59ce71d0	69	% Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
1e5a121c	70	(4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.<br>
568c21ab	71	(4) Try to use my own non LOCK prefixed version of atomic operations : we are
568c21ab	72	using per-CPU variables, so it should make it possible.<br>
1e5a121c	73	(4) integrate NPTL instrumentation (see
1e5a121c	74	<A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
3f43b8fb	75	(5) Support CPUs with scalable frequency.<br>
2a341212	76	(5) Integrate LTTng and lttd with LKCD.<br>
575b7e97	77	(7) Integrate periodical dump of perfctr hardware counters.<br>
cc5ce8a0	78	(8) Integrate periodical dump of SystemTAP computed information.<br>
cc5ce8a0	79	(8) Integrate SystemTAP logging with LTTng.<br>
9fd0275c	80	(9) Add support for setjmp/longjmp and jump tables instrumentation to
451c9b19	81	ltt-instrument-functions.<br>
51096bff	82	(9) Make ltt-usertrace-fast support internal heartbeat timer.<br>
6b18b620	83	(3) port LTTng to :<br>
e565223b	84	x86_64<BR>
e4d84ff4	85	#Autodesk <A HREF="mailto:Francois L'Archeveque <fla@discreet.com>">Francois
63eeefc3	86	L'Archeveque</A> for 2.6.9 RedHat Enterprise (patch available in contrib, still
63eeefc3	87	has to be ported to 2.6.14, thanks!)<BR>
162990b3	88	# Wind River for 2.6.14<BR>
e565223b	89	PPC<BR>
e565223b	90	PPC64<BR>
162990b3	91	# Wind River for 2.6.14<BR>
e565223b	92	alpha<BR>
	93	user-mode Linux<BR>
	94	Xen<BR>
841c926b	95	# IBM<BR>
e565223b	96	MIPS<BR>
e565223b	97	MIPS64<BR>
162990b3	98	% Wind River for 2.6.14<BR>
162990b3	99	# Tim Bird <A HREF="mailto:tim.bird@as.sony.com">Tim Bird</A><br>
e565223b	100	S/390<BR>
d804e215	101	RTLinux<BR>
d804e215	102	% Wind River for 2.6.14<BR>
0c4b3d55	103	<br>
15e89ad6	104	<br>
b720b182	105	<br>
b720b182	106	* TODO (low priority)<br>
cbe85414	107	enhance RPM packages for lttng kernel<br>
b720b182	108	Integrate header generation (genevent) in kernel build system.<br>
baffa645	109	Find a different way to printk from instrumentation : forbidden from schedule
63eeefc3	110	and wakeup (causes a deadlock). -> Modify printk so it uses LTTng tracer!<br>
	111	Export channels via network sockets instead of writing them to disk.<br>
	112	Export buffers with time constraint for "live" visualisation. Use
6b18b620	113	ltt_force_switch periodically from a timer to insure slow channels do not
63eeefc3	114	interfere with viewing.<br>
44397e24	115	Have an optional round-robin mode to write information into multiple channels
44397e24	116	from the same source.<br>
b720b182	117	<br>
15e89ad6	118	* Need to be discussed<br>
af3cfedc	119	Use 2.6.14 RelayFS control files.<br>
b720b182	120	Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
b720b182	121	drop ltt_filter_control, use functions pointers instead.<br>
b720b182	122	Merge facilities headers into one big header.<br>
	123	Change the name of XML files from XML to something else.<br>
	124	Remove ltt-base.c.<br>
	125	<br>
b720b182	126	<br>
2966f052	127	* lttng patch division (0.5.10+) :<br>
2966f052	128	<br>
451c9b19	129	instrumentation.diff<br>
	130	instrumentation-arm.diff<br>
	131	instrumentation-i386.diff<br>
	132	instrumentation-mips.diff<br>
	133	instrumentation-powerpc.diff<br>
	134	instrumentation-ppc.diff<br>
	135	instrumentation-s390.diff<br>
	136	instrumentation-sh.diff<br>
b720b182	137	ltt-facilities-headers.diff<br>
	138	ltt-facilities-loader.diff<br>
	139	ltt-facilities.diff<br>
b720b182	140	ltt-relayfs.diff<br>
b720b182	141	ltt-core.diff<br>
2966f052	142	ltt-build.diff<br>
b720b182	143	<br>
	144	<br>
	145	Mathieu Desnoyers<br>
1f2c88b1	146
	147
	148	</body>
	149	</html>