A script for converting uftrace data to perfetto trace format

[namhyung]

I'm working on a new python script to generate perfetto data from uftrace. As it requires knowledge of the perfetto protobuf format, it'd be great if we do it using python rather than adding it to the builtin dump command. Currently only basic function tracing is supported.

The script is available at review/script-perfetto-v1 branch.

Here's a simple example.

$ uftrace record tests/t-abc

$ uftrace script -S scripts/perfetto.py
Trace written to uftrace.data.perfetto-trace
Open with https://ui.perfetto.dev.

And upload it to https://ui.perfetto.dev.

[namhyung]

Well.. we can do it using chrome JSON trace format, but generating proto format would be much more efficient.

[honggyukim]

Thanks for working on this. But I cannot run this because it looks pip3 install perfetto isn't enough.

Simply speaking, I cannot make successful importing the following modules.

from perfetto.protos.perfetto.trace.perfetto_trace_pb2 import TrackEvent
from perfetto.trace_builder.proto_builder import TraceProtoBuilder

Is there a simple way to make it work?

[namhyung]

I don't know, I think it just worked for me.

[yihong0618]

FYI:
viztracer also use perfettto
https://github.com/gaogaotiantian/viztracer

it use orjson for json and works quite well https://github.com/ijl/orjson