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Add the yappi profiler for multithread profiling #6695

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Add the yappi profiler for multithread profiling #6695

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16 changes: 16 additions & 0 deletions core/dbt/profiler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,13 +3,16 @@
from pstats import Stats
from typing import Any, Generator

import yappi


@contextmanager
def profiler(enable: bool, outfile: str) -> Generator[Any, None, None]:
try:
if enable:
profiler = Profile()
profiler.enable()
yappi.start()

yield
finally:
Expand All @@ -18,3 +21,16 @@ def profiler(enable: bool, outfile: str) -> Generator[Any, None, None]:
stats = Stats(profiler)
stats.sort_stats("tottime")
stats.dump_stats(str(outfile))
yappi.stop()
threads = yappi.get_thread_stats()
all_stats = Stats()

for thread in threads:
stats = yappi.get_func_stats(ctx_id=thread.id)
filename = f"thread-{thread.id}.pstat"
stats.save(filename, "pstat")

pstats = yappi.convert2pstats(stats)
all_stats.add(pstats)

all_stats.dump_stats('threads-combined.pstat')
1 change: 1 addition & 0 deletions dev-requirements.txt
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Expand Up @@ -33,3 +33,4 @@ types-pytz
types-requests
types-setuptools
wheel
yappi