<html><head></head><body><div style="font-family:courier new, courier, monaco, monospace, sans-serif;font-size:13px;"><div style="font-family:courier new, courier, monaco, monospace, sans-serif;font-size:13px;"><div>Hi,</div><div><font size="2"><br></font></div><div><font size="2">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 <span style="color: rgb(0, 0, 0);">reads from page cache vs reads from disk, for a user space file read. could you please guide me to do it.</span></font></div><div><font size="2"><span style="color: rgb(0, 0, 0);"><br></span></font></div><div><font size="2"><span style="color: rgb(0, 0, 0);">Best rigards, </span></font></div><div><font size="2"><span style="color: rgb(0, 0, 0);">Mehdi.</span></font></div></div></div></body></html>