profiling: introduce our OpenResty XRay product for the profiling sol…

…ution.

v2/en/profiling.md

@@ -4,24 +4,14 @@
     @created       2014-04-29 19:14 GMT
     @modifier      Yichun Zhang
     @modifier_link yichun-zhang
-    @modified      2014-04-29 19:18 GMT
     @changes       7
 --->
 
 [Profiling](profiling.html) is important for analyzing and optimize [OpenResty](openresty.html) applications'
 performance.
 
-We do provide various tools based on Systemtap for profiling live [OpenResty](openresty.html) applications
-both in production and development environments.
-
-The most useful tools are
-* C-land on-CPU Flame Graph tool: https://github.com/openresty/nginx-systemtap-toolkit#sample-bt
-* C-land off-CPU Flame Graph tool: https://github.com/openresty/nginx-systemtap-toolkit#sample-bt-off-cpu
-* Lua-land on-CPU Flame Graph tool: https://github.com/openresty/stapxx#lj-lua-stacks
-
-It is recommended to build Systemtap from latest release source, see [BuildSystemtap](build-systemtap.html) for
-details.
-
-If you have problems in interpreting the resulting flame graphs or have troubles
-getting these tools running in your system, feel free to join our OpenResty
-[Community](community.html) and ask for help.
+OpenResty Inc. provides a commercial anaysis product named [OpenResty XRay](https://openresty.com/en/xray/)
+for servers and applications based on OpenResty and Nginx. The OpenResty Inc. team also provides
+custom analysis tool development, application health and bottleneck anaysis reports by human experts,
+trouble shooting and consulting services on OpenResty applications, as part of the [OpenResty XRay](https://openresty.com/en/xray/)
+enterprise subscription.