From e4aab7c771fe2b08454c6c61a7887b0146f28f70 Mon Sep 17 00:00:00 2001
From: hunt <hunt>
Date: Thu, 9 Mar 2006 20:01:16 +0000
Subject: 2006-03-09  Martin Hunt  <hunt@redhat.com>

	* key.stp: Toy example.
	* prof.stp: Example profiler.
	* top.stp: Print the top 20 syscalls.
---
 examples/top.stp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100755 examples/top.stp

(limited to 'examples/top.stp')

diff --git a/examples/top.stp b/examples/top.stp
new file mode 100755
index 00000000..26d35ec8
--- /dev/null
+++ b/examples/top.stp
@@ -0,0 +1,28 @@
+#!/usr/bin/env stap 
+#
+# This script continuously lists the top 20 systemcalls on the system
+#
+
+global syscalls
+
+function print_top () {
+	cnt=0
+	log ("SYSCALL\t\t\t\tCOUNT")
+	foreach ([name] in syscalls-) {
+		printf("%-20s\t\t%5d\n",name, syscalls[name])
+		if (cnt++ == 20)
+			break
+	}
+	printf("--------------------------------------\n")
+	delete syscalls
+}
+
+probe kernel.function("sys_*") {
+	syscalls[probefunc()]++
+}
+
+# print top syscalls every 5 seconds
+probe timer.ms(5000) {
+	print_top ()
+}
+
-- 
cgit