ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html

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   2 <body>
   3 <center><big><big>LTTV & LTTng roadmap<small><small></center>
   4 <br>
   5 <br>
   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>
  10 <br>
  11 <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>
  15 <br>
  16 <big>LTTV Roadmap<small><br>
  17 <br>
  18 * TODO<br>
  19 (2) state.c : add Softirq execution mode.<br>
  20 (3) Make LTTV aware of type formats defined in the XML file.<br>
  21 (3) Use a per architecture enumeration for traps.<br>
  22 (3) Integrate Kernel State Dump information.<br>
  23 (4) create a event rate graphical view : Will be useful in conjunction with the
  24   filter.<br>
  25         # <A HREF="mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari</A><br>
  26 (4) create a graphical per cpu activity view.<br>
  27 (5) Flight recorder : start lttd automatically upon GUI trace control stop.<br>
  28 (5) Event sequence detector (inspired from regular expressions).<br>
  29 (7) create an analysis of function time (like a precise gprof).<br>
  30   -> with gcc -f inline-functions<br>
  31 (7) Create a hardware counter viewer (low cost rate counters : L1 cache miss, page faults, interrupts...).<br>
  32 (10) Add cancel button to LTTV filter GUI window.
  33 <br>
  34 <br>
  35 <big>LTT Next Generation Roadmap<small><br>
  36 <br>
  37 * TODO<br>
  38 (2) add efficient and secure user space tracing. (1 month)<br>
  39 (3) integrate LTTng State Dump : missing irq and process state.<br>
  40         # <A HREF="mailto:Jean-Hugues Deschenes <jean-hugues.deschenes@polymtl.ca>">Jean-Hugues Deschenes</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) Create the heartbeat timer LTTng module. Make sure that heartbeat events
  44 never hit the facility channel. Use the complete 64 bits TSC for the facility
  45 channel in every case. That's because this channel must never be overwritten
  46 even in "flight recorder" mode.<br>
  47 (5) Integrate LTTng and lttd with LKCD.<br>
  48 (7) add gcc -finstrument-functions instrumentation<br>
  49 (7) Integrate periodical dump of perfctr hardware counters.<br>
  50 (8) Integrate periodical dump of SystemTAP computed information.<br>
  51 (8) Integrate SystemTAP logging with LTTng.<br>
  52 (3) port LTTng to :<br>
  53 x86_64<BR>
  54 #Autodesk <A HREF="mailto:Francois L'Archeveque <fla@discreet.com>">Francois
  55 L'Archeveque</A> for 2.6.9 RedHat Enterprise (patch available in contrib, still
  56 has to be ported to 2.6.14, thanks!)<BR>
  57 %Wind River for 2.6.14<BR>
  58 PPC<BR>
  59 PPC64<BR>
  60 %Wind River for 2.6.14<BR>
  61 alpha<BR>
  62 user-mode Linux<BR>
  63 Xen<BR>
  64 MIPS<BR>
  65 MIPS64<BR>
  66 %Wind River for 2.6.14<BR>
  67 ARM<BR>
  68 S/390<BR>
  69 <br>
  70 <br>
  71 <br>
  72 * TODO (low priority)<br>
  73 enhance RPM packages for lttng kernel<br>
  74 Integrate header generation (genevent) in kernel build system.<br>
  75 Multithreaded lttd.<br>
  76 Find a different way to printk from instrumentation : forbidden from schedule
  77 and wakeup (causes a deadlock). -> Modify printk so it uses LTTng tracer!<br>
  78 Export channels via network sockets instead of writing them to disk.<br>
  79 Export buffers with time constraint for "live" visualisation. Use
  80 ltt_force_switch periodically from a timer to insure slow channels do not
  81 interfere with viewing.<br>
  82 <br>
  83 * Need to be discussed<br>
  84 Use 2.6.14 RelayFS control files.<br>
  85 Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
  86 drop ltt_filter_control, use functions pointers instead.<br>
  87 Merge facilities headers into one big header.<br>
  88 Change the name of XML files from XML to something else.<br>
  89 Remove ltt-base.c.<br>
  90 <br>
  91 <br>
  92 * lttng patch division (0.4.2+) :<br>
  93 <br>
  94 ltt-instrumentation.diff<br>
  95 ltt-facilities-headers.diff<br>
  96 ltt-facilities-loader.diff<br>
  97 ltt-facilities.diff<br>
  98 ltt-relayfs.diff<br>
  99 ltt-core.diff<br>
 100 <br>
 101 <br>
 102 Mathieu Desnoyers<br>
 103
 104
 105 </body>
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