diff --git a/plugins/op_waf/t/ngx_debug.sh b/plugins/op_waf/t/ngx_debug.sh
index 87b8ed9ac..3928d9df2 100644
--- a/plugins/op_waf/t/ngx_debug.sh
+++ b/plugins/op_waf/t/ngx_debug.sh
@@ -2,6 +2,7 @@
 export PATH=$PATH:/opt/stap/bin:/opt/stapxx
 
 # cd /www/server/mdserver-web/plugins/op_waf/t && bash ngx_debug.sh lua ok
+# cd /www/server/mdserver-web/plugins/op_waf/t && bash ngx_debug.sh c ok
 
 
 
@@ -27,7 +28,7 @@ then
     exit
 fi
  
-pid=`ps -ef|grep openresty | grep -v grep | awk '{print $2}'`
+pids=`ps -ef|grep nginx | grep -v grep | awk '{print $2}'`
 name=$2
 
 
@@ -62,25 +63,44 @@ if [ ! -d /opt/FlameGraph ];then
     cd /opt && git clone https://github.com/brendangregg/FlameGraph
 fi
  
-if [ $1 == "lua" ]; then
-    # /opt/openresty-systemtap-toolkit/ngx-sample-lua-bt -p 377452 --luajit20 -t 30 >temp.bt
-    /opt/openresty-systemtap-toolkit/ngx-sample-lua-bt -p $pid --luajit20 -t 30 >temp.bt
-    # /opt/openresty-systemtap-toolkit/fix-lua-bt temp.bt >t1.bt
-    /opt/openresty-systemtap-toolkit/fix-lua-bt temp.bt >${name}.bt
-elif [ $1 == "c" ]; then
-    # /opt/openresty-systemtap-toolkit/sample-bt -p 496435 -t 10 -u > t2.bt
-    /opt/openresty-systemtap-toolkit/sample-bt -p $pid -t 10 -u > ${name}.bt
-else
-    echo "type is only lua/c"
-    exit
-fi
-
-
-# debuginfo-install kernel-3.10.0-1160.80.1.el7.x86_64 
-# /opt/FlameGraph/stackcollapse-perf.pl perf.unfold &> perf.folded
-# /opt/FlameGraph/flamegraph.pl perf.folded > perf.svg
-
-/opt/FlameGraph/stackcollapse-stap.pl ${name}.bt >${name}.cbt
-/opt/FlameGraph/flamegraph.pl ${name}.cbt >${name}.svg
-rm -f temp.bt ${name}.bt ${name}.cbt
+for pid in ${pids[@]}; do
+    echo $pid
+    if [ $1 == "lua" ]; then
+        /opt/openresty-systemtap-toolkit/ngx-sample-lua-bt -p $pid --luajit20 -t 30 >temp.bt
+        /opt/openresty-systemtap-toolkit/fix-lua-bt temp.bt >${name}_${pid}.bt
+    elif [ $1 == "c" ]; then
+        /opt/openresty-systemtap-toolkit/sample-bt -p $pid -t 10 -u > ${name}_${pid}.bt
+    else
+        echo "type is only lua/c"
+        exit
+    fi
+
+    /opt/FlameGraph/stackcollapse-stap.pl ${name}_${pid}.bt >${name}_${pid}.cbt
+    /opt/FlameGraph/flamegraph.pl ${name}_${pid}.cbt >${name}_${pid}.svg
+    rm -f temp.bt ${name}_${pid}.bt ${name}_${pid}.cbt
+    echo "strace:$pid, end!"
+    echo "${name}_${pid}.svg -- make ok"
+done
+
+# if [ $1 == "lua" ]; then
+#     # /opt/openresty-systemtap-toolkit/ngx-sample-lua-bt -p 377452 --luajit20 -t 30 >temp.bt
+#     /opt/openresty-systemtap-toolkit/ngx-sample-lua-bt -p $pid --luajit20 -t 30 >temp.bt
+#     # /opt/openresty-systemtap-toolkit/fix-lua-bt temp.bt >t1.bt
+#     /opt/openresty-systemtap-toolkit/fix-lua-bt temp.bt >${name}.bt
+# elif [ $1 == "c" ]; then
+#     # /opt/openresty-systemtap-toolkit/sample-bt -p 496435 -t 10 -u > t2.bt
+#     /opt/openresty-systemtap-toolkit/sample-bt -p $pid -t 10 -u > ${name}.bt
+# else
+#     echo "type is only lua/c"
+#     exit
+# fi
+
+
+# # debuginfo-install kernel-3.10.0-1160.80.1.el7.x86_64 
+# # /opt/FlameGraph/stackcollapse-perf.pl perf.unfold &> perf.folded
+# # /opt/FlameGraph/flamegraph.pl perf.folded > perf.svg
+
+# /opt/FlameGraph/stackcollapse-stap.pl ${name}.bt >${name}.cbt
+# /opt/FlameGraph/flamegraph.pl ${name}.cbt >${name}.svg
+# rm -f temp.bt ${name}.bt ${name}.cbt