Bits and pieces for non-production performance observation, logging and optimization.
This has even less warranty or stability guarantees than usual.
NB: At present you'll need to manually patch
django.db.backends.utils.CursorDebugWrapper's logging.debug() call
to include stack_info=True for stacks to get reported.
from perfkit.patches import disable_linecache_checks
from perfkit.query_tracker import QueryTracker
from perfkit.django.query_tracker import prepare_logging
from perfkit.record import write_jsonl_record
from perfkit.stopwatch import Stopwatch
def main():
disable_linecache_checks()
qt = QueryTracker()
sw = Stopwatch()
prepare_logging(qt, depropagate=True)
with sw.section("total"):
c = Client()
with qt.section("start"), sw.section("start"):
resp = c.post("/heavy-request/", data=42)
with qt.section("stop"), sw.section("stop"):
resp = c.post("/other-heavy-request/", data=resp["foo"])
write_jsonl_record("benchmark-logs.jsonl", stopwatch=sw, query_tracker=qt)
qt.dump_to_pickle_autoname("benchmark-queries")Then, follow up with e.g.
python -m perfkit.tools.format_record --remove-time --pct-field total_time --pct-field total_queries < benchmark-logs.jsonl
to reformat the JSONL file into something that is more easily chartable (WIP :-) ).
