Profiling Go Code FLAME GRAPHS Ram Nadella Online Marketplace CPU - - PowerPoint PPT Presentation

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May 12, 2023 483 likes •780 views

Profiling Go Code FLAME GRAPHS Ram Nadella Online Marketplace CPU Flame Graph of Linux Kernel Flame Graphs Function call stacks Each cell => Function Width => cost of the function Colors have no meaning Flame Graphs

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Profiling Go Code

FLAME GRAPHS

Ram Nadella

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Online Marketplace

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CPU Flame Graph of Linux Kernel

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Flame Graphs

Function call stacks
Each cell => Function
Width => cost of the function
Colors have no meaning

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Flame Graphs

SVG file
Interactive

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Generating CPU Flame Graphs

Use perf/stap/dtrace to

generate call stacks

Collapse stacks & generate

SVG file

brendangregg.com/FlameGraphs/cpuflamegraphs.html

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Go

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Setting up

import _ “net/http/pprof"

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Setting up

import _ “net/http/pprof"

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pprof

Registers http handlers that expose profiling

actions

/debug/pprof/profile
/debug/pprof/trace
/debug/pprof/heap

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Setting up

package main import _ "net/http/pprof" func main() { … go func() { http.ListenAndServe(":27590", nil) }() … }

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Setting up

package main import _ "net/http/pprof" func main() { … go func() { http.ListenAndServe(":27590", nil) }() … }

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Profiling Go Code: Flame Graphs

> go get https://github.com/uber/go-torch > git clone https://github.com/brendangregg/FlameGraph > go-torch --time=10 --file “torch.svg" \

-url http://<host>:<port>

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Profiling Go Code: Flame Graphs

> go get https://github.com/uber/go-torch > git clone https://github.com/brendangregg/FlameGraph > go-torch --time=10 --file “torch.svg" \

-url http://<host>:<port>

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Search – stats*

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References

Flame Graphs
go-torch