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The profiler
module provides memory and CPU profiler methods. It can be accessed using:
var profiler = require('profiler');
The profiler.startProfiling(path)
method start a CPU profiler, which should be explicitly stopped by profiler.stopProfiling
The profiling data will be stored into a file ${process.cwd()}/Profile-${Date.now()}.
path
{String} profiling data file pathThe profiler.startProfiling(path)
method start a CPU profiler, which should be explicitly stopped by profiler.stopProfiling
duration
{Number}The profiler.startProfiling(duration)
method start a CPU profiler, which will stop after duration
milliseconds.
The profiling data will be stored into a file ${process.cwd()}/Profile-${Date.now()}.
path
{String} profiling data file pathduration
{Number}The profiler.startProfiling(path, duration)
method start a CPU profiler, which will stop after duration
milliseconds.
path
{String} profiling data file pathThe profiler.takeSnapshot()
methd take a Heap profiler file which path is path
.
If path is not provided, it will be set to ${process.cwd()}/Profile-${Date.now()}
Example
var profiler = require('profiler');
profiler.startProfiling();
balabala...
profiler.stopProfiling();
var profiler = require('profiler');
profiler.startProfiling('/data/profile-123.txt');
balabala...
profiler.stopProfiling();
var profiler = require('profiler');
profiler.startProfiling(1000);
balabala...
var profiler = require('profiler');
profiler.startProfiling('/data/profile-123.txt', 1000);
balabala...
var profiler = require('profiler');
profiler.takeSnapshot();
```js var profiler = require(‘profiler’); profiler.takeSnapshot(‘/data/profile-123.txt’);