A tracepoint example (#596)
diff --git a/examples/tracing/urandomread_example.txt b/examples/tracing/urandomread_example.txt
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+++ b/examples/tracing/urandomread_example.txt
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+Examples of urandomread.py, the Linux eBPF/bcc version.
+
+
+To demonstrate this, the following workload was issued:
+
+# dd if=/dev/urandom of=/dev/null bs=1k count=5
+
+While urandomread.py was tracing in another session:
+
+# ./urandomread.py
+TIME(s) COMM PID GOTBITS
+22592556.392825000 dd 14228 8192
+22592556.392949000 dd 14228 8192
+22592556.393068999 dd 14228 8192
+22592556.393183999 dd 14228 8192
+22592556.393298000 dd 14228 8192
+
+The GOTBITS of 8192 matches the workload of 1 Kbyte (8 Kbit) reads.
+
+This program was really written as a simple example of tracing a tracepoint.