Question content

I am using VS Code to run Go tests and CPU/memory profiling:

question

How to download/save a chart as an image?

tried

I downloaded the results as*.gzfile:

I then used these commands to convert the*.gzfiles into images. But I get the error:

dot -Tpng -Gdpi=1024 profile.pb.gz > profile.pb.gz.png Error: profile.pb.gz: syntax error in line 1 near '▼'

in addition:

dot -Tpng profile.pb.gz -o profile.pb.gz.png Error: profile.pb.gz: syntax error in line 1 near '▼'

Workaround

profile.pb.gz contains (compressed) profiling data. Nothing to do with Graphviz.

Go includes the pprof tool, which can extract information from data in various formats, including PNG, GIF or SVG encoded images:

$ go tool pprof -png profile.pb.gz > foo.png $ file foo.png foo.png: PNG image data, 1164 x 1344, 8-bit/color RGB, non-interlaced

Please note that there is no need to gunzip the file.

Seego tools pprof -hfor more options.

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