动态跟踪的JavaScript，采用JavaScript开发。类似于dtrace, ktap等。为您提供深入了解你实时的NodeJS应用，在进程、机器或群集层面。动态跟踪的目标是提供一组丰富的调试信息，能够在生产中，帮助发现问题的根源。

特性：

• dynamic tracing :)
• local / remote execution support
• minimal overhead when idle
• flexible scripting capabilities
• probe name filtering
• pid, process title, and hostname filtering
• remote messaging for map/reduce style reporting
• multi-process support, inspect your cluster in realtime
• binds to 0.0.0.0:4322 (may need this for firewalls)

var trace = require('jstrace');  var http = require('http');    var ids = 0;    var server = http.createServer(function(req, res){    var id = ++ids;      trace('request:start', { id: id });    setTimeout(function(){        res.end('hello world');      trace('request:end', { id: id });    }, Math.random() * 250 | 0);  });    server.listen(3000);

项目主页：http://www.open-open.com/lib/view/home/1401074026589