X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Fdoc%2Fdeveloper%2Flttng-lttv-roadmap.html;h=722836eada7a283fa065aa38def74156411d9ba4;hb=e59e412507846e6821d0c2162a68c3109142fa40;hp=cfe22b5c74bef2de64958cf2c671d0a0c38e03e6;hpb=acfa77dd47bbea11365d8bd96defefb934398013;p=lttv.git diff --git a/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html b/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html index cfe22b5c..722836ea 100644 --- a/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html +++ b/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html @@ -16,74 +16,104 @@ The % symbol marks who is interested in the realisation of the item.
LTTV Roadmap

* TODO
-(3) Make LTTV aware of type formats defined in the XML file.
+(2) Add support for "stop" button in event list. (disabling event request +scheduler)
+(2) Finish pre-computing of states to a file.
+(3) Add cluster support.
+ # Eric Clement
+(3) Make LTTV aware of type formats (visual separators) defined in the XML +file.
(3) Use a per architecture enumeration for traps.
-(3) Integrate Kernel State Dump information.
-(4) create a event rate graphical view : Will be useful in conjunction with the - filter.
- # Parisa Heidari
+(3) Change the byte pair "facility, event" id for a short combining the +informatinon.
+(4) Statistics per time window.
+(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.
+(4) Add a visual artifact : PID 0 could be named swapper instead of UNNAMED for +cpus > 0.
+(4) Add event specific fields support to filter.
+(4) Add a periodic event interval view. (useful to verify event periodicity)
(4) create a graphical per cpu activity view.
+(4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]
(5) Add Python scripting hooks.
(5) Flight recorder : start lttd automatically upon GUI trace control stop.
(5) Automatically detect traces with too much processes and disable faulty operations.
(5) Event sequence detector (inspired from regular expressions).
-(7) create an analysis of function time (like a precise gprof).
- -> with gcc -f inline-functions
-(7) Create a hardware counter viewer (low cost rate counters : L1 cache miss, page faults, interrupts...).
-(10) Add cancel button to LTTV filter GUI window. +(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.
+
+* TO FIX
+(10) Event filter : event.time does not work.
+(10) Add cancel button to LTTV filter GUI window.
+(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.
+(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.


LTT Next Generation Roadmap

* TODO
-(2) add efficient and secure user space tracing. (1 month)
+(3) Find a way to make logging know when it causes a minor page fault +recursively (without ignoring silently all nested events).
+(3) Change the byte pair "facility, event" id for a short combining the +informatinon.
+(4) Add Xen support.
# Mathieu Desnoyers
-(3) integrate LTTng State Dump : missing irq and process state.
- # Jean-Hugues Deschenes
+ # Parisa Heidari
(4) efficient dynamic event filtering while recording trace.
% Sensis Corp. Tim Bish
-(4) Create the heartbeat timer LTTng module. Make sure that heartbeat events -never hit the facility channel. Use the complete 64 bits TSC for the facility -channel in every case. That's because this channel must never be overwritten -even in "flight recorder" mode.
+(4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.
+(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.
+(4) integrate NPTL instrumentation (see +PTT).
+(5) Support CPUs with scalable frequency.
(5) Integrate LTTng and lttd with LKCD.
-(6) Add Xen support.
-(7) add gcc -finstrument-functions instrumentation
(7) Integrate periodical dump of perfctr hardware counters.
(8) Integrate periodical dump of SystemTAP computed information.
(8) Integrate SystemTAP logging with LTTng.
+(9) Add support for setjmp/longjmp and jump tables instrumentation to +ltt-instrument-functions.
+(9) Make ltt-usertrace-fast support internal heartbeat timer.
(3) port LTTng to :
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
+# Wind River for 2.6.14
PPC
PPC64
-%Wind River for 2.6.14
+# Wind River for 2.6.14
alpha
user-mode Linux
Xen
+# IBM
MIPS
MIPS64
-%Wind River for 2.6.14
-ARM
- # Richard Purdie
- # Mathieu Desnoyers
+% Wind River for 2.6.14
+# Tim Bird Tim Bird
S/390
+RTLinux
+% Wind River for 2.6.14



* 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 do not interfere with viewing.
+Have an optional round-robin mode to write information into multiple channels +from the same source.

* Need to be discussed
Use 2.6.14 RelayFS control files.
@@ -94,14 +124,22 @@ Change the name of XML files from XML to something else.
Remove ltt-base.c.


-* lttng patch division (0.4.2+) :
+* lttng patch division (0.5.10+) :

-ltt-instrumentation.diff
+instrumentation.diff
+instrumentation-arm.diff
+instrumentation-i386.diff
+instrumentation-mips.diff
+instrumentation-powerpc.diff
+instrumentation-ppc.diff
+instrumentation-s390.diff
+instrumentation-sh.diff
ltt-facilities-headers.diff
ltt-facilities-loader.diff
ltt-facilities.diff
ltt-relayfs.diff
ltt-core.diff
+ltt-build.diff


Mathieu Desnoyers