1 files changed, 35 insertions, 0 deletions
diff --git a/stap_tutorial-1.0/examples/read-write-3.stp b/stap_tutorial-1.0/examples/read-write-3.stp
new file mode 100755
index 0000000..fef85a5
--- /dev/null
+++ b/stap_tutorial-1.0/examples/read-write-3.stp
@@ -0,0 +1,35 @@
+#!/usr/bin/env stap
+
+global reads, writes
+
+probe begin {
+	printf("Collecting data...\n")
+}
+
+probe syscall.read.return {
+	if ($return > 0)
+		reads <<< $return
+}
+
+probe syscall.write.return {
+	if ($return > 0)
+		writes <<< $return
+}
+
+probe end {
+	printf("Read sizes summary:\n")
+
+	printf("\tcount:%d, sum:%d, avg:%d, min:%d, max:%d\n",
+	       @count(reads), @sum(reads), @avg(reads),
+	       @min(reads), @max(reads)) 
+
+	print(@hist_log(reads))
+
+	printf("Write sizes summary:\n")
+
+	printf("\tcount:%d, sum:%d, avg:%d, min:%d, max:%d\n",
+	       @count(writes), @sum(writes), @avg(writes),
+	       @min(writes), @max(writes)) 
+
+	print(@hist_log(writes))
+}