[lttng-dev] More advanced tracing on C program

[MMM]

Hi,
I am newbie in using LTTng. I am going to trace a C program. I find a simple template for doing this work in LTTng documents. While, I can not find any documents or guidance for more advanced tracing. Indeed, I want to show ratio of show the ratio of reads from page cache vs reads from disk, for a user space file read. could you please guide me to do it.
Best rigards, Mehdi.
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