lua-resty-gperftools

Lua API for `ngx_google_perftools_profiler_module`

Before use these tools, you must compile nginx/openresty with `ngx_google_perftools_profiler_module`

Installation

Please use opm, such as :

    opm get chronolaw/lua-resty-gperftools

Usage

Some simple examples:

        location /gperftools {
            content_by_lua_block {
                local gperftools = require "resty.gperftools"
    
                local profiler = ngx.var.arg_profiler
                local action = ngx.var.arg_action
                local name = ngx.var.arg_name
    
                gperftools[profiler][action](name)
    
                ngx.say("OK")
            }
        }

Then you can start/stop gperftools with curl like below:

        curl 'http://127.0.0.1/gperftools?profiler=cpu&action=start&name=/tmp/ngx_prof'
        curl 'http://127.0.0.1/gperftools?profiler=cpu&action=stop'

API

ok, err = proto.cpu.start(name, during)

Start cpu profiler, infomations stores in name.

If during is given, the profiler will STOP after during seconds.

Notice: It will NOT add pid suffix for the name.

proto.cpu.stop()

Stop cpu profiler.

proto.heap.start(name, n, during)

Start heap profiler, infomations stores in name, dump for every n seconds.

If during is given, the profiler will STOP after during seconds.

Notice: It will NOT add pid suffix for the name.

proto.heap.dump(s)

Dump heap profiler infomations, s for the reason.

proto.heap.stop()

Stop heap profiler.