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

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   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) 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>
  22 (3) Add cluster support.<br>
  23         # <A HREF="mailto:Eric Clement <eric.clement@polymtl.ca>">Eric Clement</A><br>
  24 (3) Make LTTV aware of type formats (visual separators) defined in the XML
  25 file.<br>
  26 (3) Use a per architecture enumeration for traps.<br>
  27 (4) Add event specific fields support to filter.<br>
  28 (4) Add a periodic event interval view. (useful to verify event periodicity)<br>
  29 (4) create a graphical per cpu activity view.<br>
  30 (5) Add Python scripting hooks.<br>
  31 (5) Flight recorder : start lttd automatically upon GUI trace control stop.<br>
  32 (5) Automatically detect traces with too much processes and disable faulty operations.<br>
  33 (5) Event sequence detector (inspired from regular expressions).<br>
  34 (7) Create a hardware counter viewer (low cost rate counters : L1 cache miss,
  35 page faults, interrupts...). This will be a generalisation of the event rate
  36 view into a view of the evolution of a user definable event field.<br>
  37 <br>
  38 * TO FIX<br>
  39 (10) Event filter : event.time does not work.<br>
  40 (10) Add cancel button to LTTV filter GUI window.<br>
  41 (10) Sometimes, in the control flow view, a process with 0 creation time is
  42 created in addition to the real process itself. Seems to be caused by end of
  43 process life.<br>
  44 (10) Statistics do not take in account the time spent in the mode present at
  45 the beginning of the trace. Example : real time spent in system call on behalf
  46 of process 0.<br>
  47 <br>
  48 <br>
  49 <big>LTT Next Generation Roadmap<small><br>
  50 <br>
  51 * TODO<br>
  52 (4) Add Xen support.<br>
  53         # <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
  54         # <A HREF="mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari</A><br>
  55 (4) efficient dynamic event filtering while recording trace.<br>
  56         % Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
  57 (4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.<br>
  58 (4) integrate NPTL instrumentation (see
  59 <A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
  60 (5) Support CPUs with scalable frequency.<br>
  61 (5) Integrate LTTng and lttd with LKCD.<br>
  62 (7) Integrate periodical dump of perfctr hardware counters.<br>
  63 (8) Integrate periodical dump of SystemTAP computed information.<br>
  64 (8) Integrate SystemTAP logging with LTTng.<br>
  65 (9) Add support for setjmp/longjmp and jump tables instrumentation to
  66 ltt-instrument-functions.<br>
  67 (9) Make ltt-usertrace-fast support internal heartbeat timer.<br>
  68 (3) port LTTng to :<br>
  69 x86_64<BR>
  70 #Autodesk <A HREF="mailto:Francois L'Archeveque <fla@discreet.com>">Francois
  71 L'Archeveque</A> for 2.6.9 RedHat Enterprise (patch available in contrib, still
  72 has to be ported to 2.6.14, thanks!)<BR>
  73 # Wind River for 2.6.14<BR>
  74 PPC<BR>
  75 PPC64<BR>
  76 # Wind River for 2.6.14<BR>
  77 alpha<BR>
  78 user-mode Linux<BR>
  79 Xen<BR>
  80 # IBM<BR>
  81 MIPS<BR>
  82 MIPS64<BR>
  83 % Wind River for 2.6.14<BR>
  84 # Tim Bird <A HREF="mailto:tim.bird@as.sony.com">Tim Bird</A><br>
  85 S/390<BR>
  86 RTLinux<BR>
  87 % Wind River for 2.6.14<BR>
  88 <br>
  89 <br>
  90 <br>
  91 * TODO (low priority)<br>
  92 enhance RPM packages for lttng kernel<br>
  93 Integrate header generation (genevent) in kernel build system.<br>
  94 Find a different way to printk from instrumentation : forbidden from schedule
  95 and wakeup (causes a deadlock). -> Modify printk so it uses LTTng tracer!<br>
  96 Export channels via network sockets instead of writing them to disk.<br>
  97 Export buffers with time constraint for "live" visualisation. Use
  98 ltt_force_switch periodically from a timer to insure slow channels do not
  99 interfere with viewing.<br>
 100 Have an optional round-robin mode to write information into multiple channels
 101 from the same source.<br>
 102 <br>
 103 * Need to be discussed<br>
 104 Use 2.6.14 RelayFS control files.<br>
 105 Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
 106 drop ltt_filter_control, use functions pointers instead.<br>
 107 Merge facilities headers into one big header.<br>
 108 Change the name of XML files from XML to something else.<br>
 109 Remove ltt-base.c.<br>
 110 <br>
 111 <br>
 112 * lttng patch division (0.5.10+) :<br>
 113 <br>
 114 instrumentation.diff<br>
 115 instrumentation-arm.diff<br>
 116 instrumentation-i386.diff<br>
 117 instrumentation-mips.diff<br>
 118 instrumentation-powerpc.diff<br>
 119 instrumentation-ppc.diff<br>
 120 instrumentation-s390.diff<br>
 121 instrumentation-sh.diff<br>
 122 ltt-facilities-headers.diff<br>
 123 ltt-facilities-loader.diff<br>
 124 ltt-facilities.diff<br>
 125 ltt-relayfs.diff<br>
 126 ltt-core.diff<br>
 127 ltt-build.diff<br>
 128 <br>
 129 <br>
 130 Mathieu Desnoyers<br>
 131
 132
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