further
Lua performance analysis tools
principle
Similar gperftools, by timer signal callbacks to view the call stack, calls to locate hot spots
characteristic
- Simple, just a few lines of code, you can output the results
- Accurate, compared lua Hook, sampling timing more accurately capture mode execution hot lua
- Lightweight, because it is sampled, a row lua hook, can minimize the impact of running the host program directly comparable
- Intuitive, call graph output can directly see the hot spots and call relations
use
Lua code
- introducing libplua.so
local P = the require "libplua"
- Sampling opening
- Parameter 1: sampling time (in seconds), sampling has been represents 0
- 2 parameters: the sampling result file
p.start (0, "call.pro ")
do_some_thing ()
- end of the sampling, the output file
p.stop ()
- the result into the txt format
p.text (" call.pro "," call.txt ")
- the result converted into dot format available graphviz view
p.dot ( "call.pro", "call.dot")
- the result converted into svg format that can be viewed directly opens a browser
p.svg ( "call.pro", "call.svg ")
Compile
- Install lua 5.3
- Install graphviz
- Compile pLua
$ cmake . $ make
Examples
Run lua test1.lua, lua test2.luaview svg result 
[test1]
[Test2]