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go net/http transport 内存泄漏

 1 year ago
source link: https://www.v2ex.com/t/929315
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go net/http transport 内存泄漏

  aladdinding · 13 小时 10 分钟前 · 926 次点击
  • 使用的是全局的 transport
		transport: &http.Transport{
			DialContext: proxy.DailContext,
			Proxy: func(req *http.Request) (*url.URL, error) {
				if proxyURL, ok := req.Context().Value(proxy.KeyProxyURL).(*url.URL); ok {
					return proxyURL, nil
				}
				return nil, nil
			},
			TLSClientConfig: &tls.Config{
				InsecureSkipVerify: true,
			},
			IdleConnTimeout:       15 * time.Second,
			ResponseHeaderTimeout: 10 * time.Second,
			TLSHandshakeTimeout:   10 * time.Second,
			ExpectContinueTimeout: 10 * time.Second,
			MaxIdleConnsPerHost:   3,
		},}
  • 每次 resp.Body 也 close 了

附上 pprof 图，

http://img.aladdinding.cn/202304030947153.png

集中在 bufio NewReader/Writer 是什么原因呢？

  • goroutine 数量也没有暴增，数量稳定在 3000-4000 ，下面是 transport 代码

	pconn.br = bufio.NewReaderSize(pconn, t.readBufferSize())
	pconn.bw = bufio.NewWriterSize(persistConnWriter{pconn}, t.writeBufferSize())

	go pconn.readLoop()
	go pconn.writeLoop()
	return pconn, nil

report

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