Hi Ravindra, I'm sending the reply also to the tracecompass mailing list, where it is more on topic.
On 2019-03-27 7:23 a.m., Ravindra Kumar Meena wrote: > Hi Developers, > > I am working on a project where I want Trace Compass to analyze and > display some information. I wanna ask a few things: > > Q1. Is there any way to extend Trace Compass to work trace data in CTF > format? From what I understand, you have a CTF trace and would like to implement a specific trace type from it, for example, to be able to add custom analyses for this specific type. Right? You can read the developer documentation on how to add new trace types [1]. You may want to take a look at the LttngKernelTrace class for an example of such extension of CTF Trace [2]. There are a few more around the code, looking at the class hierarchy for CtfTmfTrace will show you which ones. > > Q2. How trace data(CTF) can be converted to Linux kernel trace > data(LTTng) which Trace Compass already understands? Kernel traces need to implement IKernelTrace. This interface provides an event layout (IKernelAnalysisEventLayout) which will define which events in the trace correspond to common "concepts" of the kernel, like sched_switches, syscalls, irqs, etc. That's how any kernel trace format like ftrace, perf and lttng can use common analyses made for kernel. You would need to implement this event layout for your own trace types. [1] http://archive.eclipse.org/tracecompass/doc/org.eclipse.tracecompass.doc.dev/Implementing-a-New-Trace-Type.html#Implementing_a_New_Trace_Type [2] https://git.eclipse.org/c/tracecompass/org.eclipse.tracecompass.git/tree/lttng/org.eclipse.tracecompass.lttng2.kernel.core/src/org/eclipse/tracecompass/lttng2/kernel/core/trace/LttngKernelTrace.java Cheers, Geneviève _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
