<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

</blockquote></blockquote>I've modified the kernelshark visualizer to draw sched_trace events. It is not complete nor super clean, but the work could be useful to people even in its unfinished state. It is not properly documented and I make no guarantees about anything. I am not currently advocating merging any of the things I do for this.<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>Located at: ssh://<a href="http://rtsrv.cs.unc.edu/home/litmus/trace-cmd.git" target="_blank">rtsrv.cs.unc.edu/home/litmus/trace-cmd.git</a><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><blockquote></blockquote>

</blockquote></blockquote>Build with: make gui<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>Requires kernel patch: wip-kshark<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>The kernel patch is required because you must write out litmus_clock() for each kernel event. Also, it adds an argument to sched_trace_task_block to display a lock id in kernelshark. My patch sequentially assigns lock ids to every litmus_lock as they are created in the system for this reason.<br>

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<blockquote></blockquote></blockquote></blockquote>CPU plots:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Displayed by default<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Solid colored when a task is running<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Displays task PID, colors based on PID<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Thin vertical black lines mark areas NON REAL-TIME tasks are running<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><blockquote></blockquote>

</blockquote></blockquote>Task plots:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Displayed in plots->Real-Time Tasks<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Can show all task with plots->Show All Real-Time Tasks<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Thin horizontal black lines mark blocking. If a lock id is specified by sched_trace that isn't 0, it will be displayed above the line<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

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</blockquote></blockquote>* Up and down triangles mark releases and deadlines<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>* Thick vertical black line represents completion<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>System events are displayed as lines. Any event which is _not_ drawn in a plot is displayed. For example, the CPU plot will display a line whenever a task is released on it, but the task plot will not because it will draw a pretty release triangle at this time.<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">

<blockquote></blockquote></blockquote></blockquote>Mouse hovering will attempt (its not guaranteed to succeed) to display the currently running task and job number. Hovering over anything with a line (a system event, a task completion / release / deadline), and you will get a popup with the event parameters.<br>

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<blockquote></blockquote></blockquote></blockquote><a href="http://i.imgur.com/nZxk6.png" target="_blank">http://i.imgur.com/nZxk6.png</a> : screenshot of locks<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><blockquote></blockquote>

</blockquote></blockquote><a href="http://i.imgur.com/MJmVz.png" target="_blank">http://i.imgur.com/MJmVz.png</a>: screenshot of tasks executing (wierdly)<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

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</blockquote></blockquote>See Andreas earlier email for instructions for using kernelshark to visualize traces.</div><div><br></div>-- <br>Jonathan Herman<br>Department of Computer Science at UNC Chapel Hill<br>