README
¶
Casper Cloud
基准测试
我们Mock了一个服务他的平均响应时间非常短，他产生的HTML非常简单
<html><head><title>Hello World</title></head><body><h1>Hello World</h1></body></html>
然后我们测试三种下载方式的下载时间
1. curl
2. golang http.Client
3. casper js
结果如下
BenchmarkCurl-4 2000 7960292 ns/op
BenchmarkHttpClient-4 100000 179471 ns/op
BenchmarkCasperJs-4 5 3091975091 ns/op
可以看到，Curl启动进程的时间花费了7ms，http.Client启动进程的时间为0， 而CasperJs启动进程的时间最长，大概需要3s。
但是，如果节省CasperJs打开进程的时间，那么实际下载时间是多少？
我们写了两段js
mock.js
var casper = require("casper").create();
casper.start("http://127.0.0.1:20893/hello", function(){
console.log(this.getHTML());
});
casper.run();
mock_100.js
var casper = require("casper").create();
casper.start("http://127.0.0.1:20893/hello", function(){
console.log(this.getHTML());
}).repeat(99, function(){
casper.thenOpen("http://127.0.0.1:20893/hello", function(){
console.log(this.getHTML());
});
});
casper.run();
在mock.js中，我们打开一次casperjs只下载一个链接，而在mock_100.js中，我们打开一次下载100个链接。然后我们在服务端让程序10ms返回。再做一次测试，结果如下：
BenchmarkCasperJs-4 20 2824344729 ns/op
BenchmarkCasperJs100-4 5 9634887107 ns/op
可以看到，在批量下载的程序里，一次下载的时间是 (9635 - 2824) / 99 = 68ms
同样的，我们也对比一下curl的单次下载和批量下载，结果如下
BenchmarkCurl-4 2000 22667633 ns/op
BenchmarkCurl100-4 30 1202024886 ns/op
可以看到，curl的一次下载时间是 (1202 - 22) / 99 = 11ms
从而可以看到，在单次下载中，casperjs的耗时是curl的6倍左右。
Documentation
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Index ¶
- func LoadDownloads(fs []string)
- func ParseFile(fn string) error
- func Pop3ReceiveMail(username, password string) ([]string, error)
- func PostDataToSlack(msg, channel string) bool
- func UploadImage(path string) string
- type CasperCmd
- func (self *CasperCmd) DecodePassword(p string) string
- func (self *CasperCmd) Finished() bool
- func (self *CasperCmd) GetArgsValue(key string) string
- func (self *CasperCmd) GetId() string
- func (self *CasperCmd) GetMessage() map[string]interface{}
- func (self *CasperCmd) GetStatus() int
- func (self *CasperCmd) SetInputArgs(input map[string]string)
- type CasperOutput
- type CasperServer
- type Command
- type FakeCmd
- type Mail
- type MailProcessor
- type ServerData
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func LoadDownloads ¶
func LoadDownloads(fs []string)
func Pop3ReceiveMail ¶
func PostDataToSlack ¶
func UploadImage ¶
Types ¶
type CasperCmd ¶
type CasperCmd struct {
// contains filtered or unexported fields
}
func NewCasperCmd ¶
func (*CasperCmd) DecodePassword ¶
func (*CasperCmd) GetArgsValue ¶
func (*CasperCmd) GetMessage ¶
func (*CasperCmd) SetInputArgs ¶
type CasperOutput ¶
type CasperServer ¶
type CasperServer struct {
Host string
// contains filtered or unexported fields
}
func NewCasperServer ¶
func NewCasperServer(host string) *CasperServer
func (*CasperServer) ServeHTTP ¶
func (self *CasperServer) ServeHTTP(w http.ResponseWriter, req *http.Request)
func (*CasperServer) ServeWebSocket ¶
func (self *CasperServer) ServeWebSocket(ws *websocket.Conn)
type FakeCmd ¶
type FakeCmd struct {
// contains filtered or unexported fields
}
func NewFakeCmd ¶
func (*FakeCmd) GetMessage ¶
func (*FakeCmd) SetInputArgs ¶
type MailProcessor ¶
type MailProcessor struct {
}
func NewMailProcessor ¶
func NewMailProcessor() *MailProcessor
type ServerData ¶
type ServerData struct {
// contains filtered or unexported fields
}
func NewServerData ¶
func NewServerData() *ServerData
func (*ServerData) GetCommand ¶
func (self *ServerData) GetCommand(id string) Command
func (*ServerData) GetNewCommand ¶
func (self *ServerData) GetNewCommand(tmpl, proxyServer string) Command
Source Files
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