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-<body>
-<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>
-(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>
- # <A HREF="mailto:Gabriel Matni <gabrien.matni@polymtl.ca>">Gabriel Matni</A><br>
-(4) Statistics per time window.<br>
-(4) Add Xen per physical CPU view.<br>
-(4) Add Xen per vcpu view.<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) Filter by target process.<br>
-(4) Compensate for time spent in probes in LTTV analysis.<br>
-(4) Add CPU, network, disk, memory usage histogram. [Per interval statistics]<br>
-(4) Add sort by process priority in the control flow view (must also instrument
-priority information of the processes).<br>
-% Airbus<br>
-(5) Add Python scripting hooks.<br>
-(5) Add GUI interface to take an hybrid trace.<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) 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>
-(1) Dump mounts.<br>
-(1) Bring userspace tracing in sync with new lttng.<br>
-(1) Bring stack dump in sync with new lttng.<br>
-(1) efficient dynamic event filtering while recording trace.<br>
- % Google<br>
- % Sensis Corp. <A HREF="mailto:Bish, Tim <Tim.Bish@Sensis.com>">Tim Bish</A><br>
- # <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
- - Partly implemented: per marker selection through /proc interface.<br>
- - Must still implement per active trace filtering.<br>
-(1) Add Xen support. (Trace buffer desallocation needs to be fixed)<br>
- # <A HREF="mailto:Mathieu Desnoyers <compudj@krystal.dyndns.org>">Mathieu Desnoyers</A><br>
-(1) Integrate SystemTAP logging with LTTng.<br>
-(4) instrument kernel bottom half irqsave, seqlocks, semaphores, mutexes, brlock.<br>
-(4) integrate NPTL instrumentation (see
-<A HREF="http://nptltracetool.sourceforge.net/">PTT</A>).<br>
-(4) Probe calibration kernel module.<br>
-(4) Make page faults detect nested fault without nesting 4 times in the page
-fault handler.<br>
-(5) Support CPUs with scalable frequency.<br>
-(5) Add boot time tracing support.<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>
-(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>
-alpha<BR>
-user-mode Linux<BR>
-Xen<BR>
-# IBM<BR>
-S/390<BR>
-RTLinux<BR>
-% Wind River for 2.6.14<BR>
-sparc64<BR>
-# Wind River<BR>
-sh4<br>
-<br>
-<br>
-<br>
-* TODO (low priority)<br>
-enhance RPM packages for lttng kernel<br>
-Integrate header generation (genevent) in kernel build system.<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>
-Mathieu Desnoyers<br>
-
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projects / lttv.git / blobdiff