From 6612059a9f1b7414b1d5046795b2dea0ca4e791a Mon Sep 17 00:00:00 2001
From: xion <xionchen@foxmail.com>
Date: Thu, 23 Jun 2016 09:08:00 +0800
Subject: [PATCH] add an io count tracer

Change-Id: I9ad826eca3ea97505a660e8d226780de7c7ecbc7
---
 scripts/io-count.stp    | 23 +++++++++++++++++++++++
 tests/ci/scalpels-ci.sh |  2 +-
 tools/init_scalpels.sh  |  1 +
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100755 scripts/io-count.stp

diff --git a/scripts/io-count.stp b/scripts/io-count.stp
new file mode 100755
index 0000000..c178100
--- /dev/null
+++ b/scripts/io-count.stp
@@ -0,0 +1,23 @@
+#!/usr/bin/env stap
+# alias_suffixes.stp
+# Uses alias suffixes to track time intervals for a subset of kernel
+# functions. Based on func_time_stats.stp.
+
+global now_count =0;
+global old_count = 0;
+
+
+# We can apply a suffix to multiple probe points designated by one alias:
+probe miscellany = syscall.{open,close,read,write} { }
+
+probe miscellany {
+    now_count = now_count +1;
+}
+
+probe timer.ms(1000){
+    new_count = now_count - old_count;
+    printf("%d\n",new_count);
+    old_count = now_count;
+
+}
+
diff --git a/tests/ci/scalpels-ci.sh b/tests/ci/scalpels-ci.sh
index 622b1d8..b61c186 100755
--- a/tests/ci/scalpels-ci.sh
+++ b/tests/ci/scalpels-ci.sh
@@ -13,7 +13,7 @@ function debug_msg {
 
 function basic_test {
     sca tracer -l
-    sca start -a rpc -a rabbit -a traffic
+    sca start -a rpc -a rabbit -a traffic -a iocount
 
     sca load --storm
     sleep 10
diff --git a/tools/init_scalpels.sh b/tools/init_scalpels.sh
index ccc0ec0..c38499e 100755
--- a/tools/init_scalpels.sh
+++ b/tools/init_scalpels.sh
@@ -10,4 +10,5 @@ sca-manage setup -t name=oslolock -t tpl="stap %(tracer_path)s/oslo-lock.stp"
 sca-manage setup -t name=modelsave -t tpl="stap %(tracer_path)s/model-save.stp"
 sca-manage setup -t name=sqlaexec -t tpl="stap %(tracer_path)s/sqla-exec.stp"
 sca-manage setup -t name=rpccount -t tpl="stap %(tracer_path)s/rpc-count.stp"
+sca-manage setup -t name=iocount -t tpl="stap %(tracer_path)s/io-count.stp"
 sca tracer -l