如何分析 Goroutine 数量
监控 Goroutine 数量可以帮助检测潜在的泄漏。 Pprof 提供了显示此信息的方法。
要查看一段时间内的 goroutine 计数,请导航到 http://localhost:8888/debug/pprof/。有两个相关选项可用:
goroutine (http://localhost:8888/debug/pprof/goroutine?debug=1)
此视图对执行的 Goroutine 进行分组相同的代码并显示它们的计数。例如:
1 @ 0x42f223 0x42f2e4 0x40542f 0x404f4b 0x4a0586 0x4600a1 # 0x4a0586 gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).startWorkers+0x56 /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:164 1 @ 0x42f223 0x43dfd7 0x43d532 0x4a04ed 0x4600a1 # 0x4a04ed gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).processRunners+0x45d /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:147
完整的 goroutine 堆栈转储 (http://localhost:8888/debug/pprof/goroutine?debug=2)
这提供了一个每个 goroutine 的全面概述,包括其堆栈跟踪和当前活动(例如,等待从通道接收)。它对于识别泄漏特别有用:
goroutine 49 [chan receive, 2 minutes]: gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).startWorkers(0xc820103ee0, 0xc820274000, 0xc820274060, 0xc8201d65a0) /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:164 +0x56 created by gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).Run /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:294 +0x41b goroutine 50 [select]: gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).processRunners(0xc820103ee0, 0x0, 0xc820274060, 0xc8201d65a0) /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:147 +0x45d created by gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands.(*RunCommand).startWorkers /home/me/go/src/gitlab.com/gitlab-org/gitlab-ci-multi-runner/commands/multi.go:165 +0x96
以上是如何使用 Pprof 识别和诊断 Goroutine 泄漏?的详细内容。更多信息请关注PHP中文网其他相关文章!