Update ngx_debug.sh

plugins/op_waf/t/ngx_debug.sh

@@ -1,6 +1,19 @@
 #!/bin/sh
  
 
+# https://moonbingbing.gitbooks.io/openresty-best-practices/content/flame_graph/install.html
+# apt install elfutils
+# sudo apt-get install -y systemtap gcc
+# sudo apt-get install linux-headers-generic gcc libcap-dev
+
+
+# cat > /etc/apt/sources.list.d/ddebs.list << EOF
+# deb http://ddebs.ubuntu.com/ precise main restricted universe multiverse
+# EOF
+# 
+# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
+# apt-get update
+
 # cd /www/server/mdserver-web/plugins/op_waf/t && sh ngx_debug.sh lua t1
 # cd /www/server/mdserver-web/plugins/op_waf/t && sh ngx_debug.sh c t2
 
@@ -15,6 +28,7 @@ name=$2
 
 
 
+
 # /opt/openresty-systemtap-toolkit/ngx-active-reqs -p 496435
 
 # /opt/openresty-systemtap-toolkit/sample-bt -p 496435 -t 5 -k > a.bt
@@ -27,7 +41,7 @@ if [ ! -d /opt/openresty-systemtap-toolkit ];then
     cd /opt && git clone https://github.com/openresty/openresty-systemtap-toolkit
 fi
 
-if [ ! -d stapxx ];then
+if [ ! -d /opt/stapxx ];then
     cd /opt && git clone https://github.com/openresty/stapxx
 fi