| | 1 | <html> |
| | 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) Finish pre-computing of states to a file.<br> |
| | 20 | (3) Add cluster support.<br> |
| | 21 | # <A HREF="mailto:Eric Clement <eric.clement@polymtl.ca>">Eric Clement</A><br> |
| | 22 | (3) Make LTTV aware of type formats (visual separators) defined in the XML |
| | 23 | file.<br> |
| | 24 | (3) Use a per architecture enumeration for traps.<br> |
| | 25 | (3) Change the byte pair "facility, event" id for a short combining the |
| | 26 | informatinon.<br> |
| | 27 | (4) Statistics per time window.<br> |
| | 28 | (4) Disable plugins when threshold reached (i.e. too much process in control |
| | 29 | flow view). Draw, and, when the threshold is reached, stop drawing. The global |
| | 30 | statistics view can inhibit showing the per process stats.<br> |
| | 31 | (4) Add a visual artifact : PID 0 could be named swapper instead of UNNAMED for |
| | 32 | cpus > 0.<br> |
| | 33 | (4) Add event specific fields support to filter.<br> |
| | 34 | (4) Add a periodic event interval view. (useful to verify event periodicity)<br> |
| | 35 | (4) create a graphical per cpu activity view.<br> |
| | 36 | (4) Filter by target process.<br> |
| | 37 | (4) Compensate for time spent in probes in LTTV analysis.<br> |
| | 38 | (4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br> |
| | 39 | (5) Add Python scripting hooks.<br> |
| | 40 | (5) Flight recorder : start lttd automatically upon GUI trace control stop.<br> |
| | 41 | (5) Automatically detect traces with too much processes and disable faulty operations.<br> |
| | 42 | (5) Event sequence detector (inspired from regular expressions).<br> |
| | 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> |
| | 46 | <br> |
| | 47 | * TO FIX<br> |
| | 48 | (10) Add cancel button to LTTV filter GUI window.<br> |
| | 49 | (10) Sometimes, in the control flow view, a process with 0 creation time is |
| | 50 | created in addition to the real process itself. Seems to be caused by end of |
| | 51 | process life.<br> |
| | 52 | (10) Statistics do not take in account the time spent in the mode present at |
| | 53 | the beginning of the trace. Example : real time spent in system call on behalf |
| | 54 | of process 0.<br> |
| | 55 | <br> |
| | 56 | <br> |
| | 57 | <big>LTT Next Generation Roadmap<small><br> |
| | 58 | <br> |
| | 59 | * TODO<br> |
| | 60 | (3) Add sysenter instrumentation on x86. Verify x86_64.<br> |
| | 61 | (3) Fix x86_64 page fault exit missing instrumentation.<br> |
| | 62 | (3) Have various subbuffer sizes for high and low rate channels.<br> |
| | 63 | (3) Change the byte pair "facility, event" id for a short combining the |
| | 64 | informatinon.<br> |
| | 65 | (4) Add Xen support.<br> |
| | 66 | # <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br> |
| | 67 | # <A HREF="mailto:Parisa Heidari <parisa.heidari@polymtl.ca>">Parisa Heidari</A><br> |
| | 68 | (4) efficient dynamic event filtering while recording trace.<br> |
| | 69 | % Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br> |
| | 70 | (4) instrument kernel bottom half irqsave, spinlocks, rwlocks, seqlocks, semaphores, mutexes, brlock.<br> |
| | 71 | (4) In flight recorder mode, have the low traffic channels saved as normal |
| | 72 | tracefiles and high traffic channels being flight recorder.<br> |
| | 73 | (4) Try to use my own non LOCK prefixed version of atomic operations : we are |
| | 74 | using per-CPU variables, so it should make it possible.<br> |
| | 75 | (4) integrate NPTL instrumentation (see |
| | 76 | <A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br> |
| | 77 | (4) Probe calibration kernel module.<br> |
| | 78 | (4) Make page faults detect nested fault without nesting 4 times in the page |
| | 79 | fault handler.<br> |
| | 80 | (4) #IBM Test fix for ppc64 kernel 2.6.9 missing syscall return instrumentation.<br> |
| | 81 | (5) Discuss with RelayFS upstream to integrate LTTng modifications.<br> |
| | 82 | (5) Move to DebugFS for channel files.<br> |
| | 83 | (5) Support CPUs with scalable frequency.<br> |
| | 84 | (5) Integrate LTTng and lttd with LKCD.<br> |
| | 85 | (7) Integrate periodical dump of perfctr hardware counters.<br> |
| | 86 | (8) Integrate periodical dump of SystemTAP computed information.<br> |
| | 87 | (8) Integrate SystemTAP logging with LTTng.<br> |
| | 88 | (9) Add support for setjmp/longjmp and jump tables instrumentation to |
| | 89 | ltt-instrument-functions.<br> |
| | 90 | (9) Make ltt-usertrace-fast support internal heartbeat timer.<br> |
| | 91 | (3) port LTTng to :<br> |
| | 92 | alpha<BR> |
| | 93 | user-mode Linux<BR> |
| | 94 | Xen<BR> |
| | 95 | # IBM<BR> |
| | 96 | S/390<BR> |
| | 97 | RTLinux<BR> |
| | 98 | % Wind River for 2.6.14<BR> |
| | 99 | <br> |
| | 100 | <br> |
| | 101 | <br> |
| | 102 | * TODO (low priority)<br> |
| | 103 | enhance RPM packages for lttng kernel<br> |
| | 104 | Integrate header generation (genevent) in kernel build system.<br> |
| | 105 | Export channels via network sockets instead of writing them to disk.<br> |
| | 106 | Export buffers with time constraint for "live" visualisation. Use |
| | 107 | ltt_force_switch periodically from a timer to insure slow channels do not |
| | 108 | interfere with viewing.<br> |
| | 109 | Have an optional round-robin mode to write information into multiple channels |
| | 110 | from the same source.<br> |
| | 111 | <br> |
| | 112 | * Need to be discussed<br> |
| | 113 | Use 2.6.14 RelayFS control files.<br> |
| | 114 | Drop ltt-module-register and ltt-module-unregister, use exported variables.<br> |
| | 115 | drop ltt_filter_control, use functions pointers instead.<br> |
| | 116 | Merge facilities headers into one big header.<br> |
| | 117 | Change the name of XML files from XML to something else.<br> |
| | 118 | Remove ltt-base.c.<br> |
| | 119 | <br> |
| | 120 | <br> |
| | 121 | * lttng patch division (0.5.10+) :<br> |
| | 122 | <br> |
| | 123 | instrumentation.diff<br> |
| | 124 | instrumentation-arm.diff<br> |
| | 125 | instrumentation-i386.diff<br> |
| | 126 | instrumentation-mips.diff<br> |
| | 127 | instrumentation-powerpc.diff<br> |
| | 128 | instrumentation-ppc.diff<br> |
| | 129 | instrumentation-s390.diff<br> |
| | 130 | instrumentation-sh.diff<br> |
| | 131 | ltt-facilities-headers.diff<br> |
| | 132 | ltt-facilities-loader.diff<br> |
| | 133 | ltt-facilities.diff<br> |
| | 134 | ltt-relayfs.diff<br> |
| | 135 | ltt-core.diff<br> |
| | 136 | ltt-build.diff<br> |
| | 137 | <br> |
| | 138 | <br> |
| | 139 | Mathieu Desnoyers<br> |
| | 140 | |
| | 141 | |
| | 142 | </body> |
| | 143 | </html> |
projects / lttv.git / blame_incremental