trace

package

v1.21.0 Latest Latest Go to latest Published: Dec 26, 2023 License: BSD-3-Clause Imports: 29 Imported by: 0

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Repository

github.com/go-asm/go

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Documentation ¶

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Overview ¶

Trace is a tool for viewing trace files.

Trace files can be generated with:

runtime/trace.Start
net/http/pprof package
go test -trace

Example usage: Generate a trace file with 'go test':

go test -trace trace.out pkg

View the trace in a web browser:

go tool trace trace.out

Generate a pprof-like profile from the trace:

go tool trace -pprof=TYPE trace.out > TYPE.pprof

Supported profile types are:

net: network blocking profile
sync: synchronization blocking profile
syscall: syscall blocking profile
sched: scheduler latency profile

Then, you can use the pprof tool to analyze the profile:

go tool pprof TYPE.pprof

Note that while the various profiles available when launching 'go tool trace' work on every browser, the trace viewer itself (the 'view trace' page) comes from the Chrome/Chromium project and is only actively tested on that browser.

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type NameArg ¶

type NameArg struct {
	Name string `json:"name"`
}

type Range ¶

type Range struct {
	Name      string
	Start     int
	End       int
	StartTime int64
	EndTime   int64
}

func (Range) URL ¶

func (r Range) URL() string

type Record ¶

type Record struct {
	// contains filtered or unexported fields
}

Record represents one entry in pprof-like profiles.

type RegionArg ¶

type RegionArg struct {
	TaskID uint64 `json:"taskid,omitempty"`
}

type SortIndexArg ¶

type SortIndexArg struct {
	Index int `json:"sort_index"`
}

type TaskArg ¶

type TaskArg struct {
	ID     uint64 `json:"id"`
	StartG uint64 `json:"start_g,omitempty"`
	EndG   uint64 `json:"end_g,omitempty"`
}

Source Files ¶

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