Agents write the code. Perfloop keeps it fast.

Perfloop finds what’s slow or wrong in your code, proves the change, and brings it back as a pull request.

89 changes merged into open source.

21 projects

Read each merged change

MODEL UPKEEP
on
Keeps the map of your system current as your code changes.
CASE WORK
off
Starts work on what it finds without waiting for you.
PR FEEDBACK
on
Handles review comments and failed checks on the pull requests it opened.
PULL REQUESTS
off
Opens the pull request as soon as the change is proven. You decide the merge.
PR REVIEW
off
Reviews new pull requests as they open. You pick which findings to prove.
RESEARCH
daily
Brings what's new in the field to your code, toward the goals you set.

app.perfloop.ai·/t/oss/frontier

Suspected problems or improvements (hypotheses), and the Cases that test them.

Cases
Hypothesis	Size	Where	Pattern	State
Return early for constant sorting keys	Sizeunknown	perfloop/clickhouse MergeTree insert part-write loop	INEFFICIENT ALGORITHM, Algorithms & compute family	VERIFIED
Pool OTLP converter scratch state	Sizeunknown	perfloop/prometheus OTLP metrics ingestion	ALLOCATION HOT LOOP, Memory & locality family	VERIFIED
BCE, loop unrolling, and redundant copy elimination in lazyIORBitmap and lazyORBitmap	Sizeunknown	perfloop/roaring Parallel union operations (OR)	DATA PARALLEL GAP, Algorithms & compute family	VERIFIED
Eliminate cache-populate completion wait after upstream EOF	Sizeunknown	perfloop/tag S3 object GET cache delivery	SYNC WAIT, Concurrency & scheduling family	VERIFIED
Remove per-command AOF staging copy	Sizeunknown	perfloop/redis AOF mutation-record encoding	AVOIDABLE COPY, Memory & locality family	REFUTED
Single-pass min/max calculation for page bounds below threshold	Sizeunknown	perfloop/parquet-go parquet.Writer.WriteRows	INEFFICIENT ALGORITHM, Algorithms & compute family	REFUTED