Frontier · oss
https://perfloop.ai/t/oss/frontier
VERIFIED· Raw-byte multi plans break the lowest-pattern-ID rule on tied starts · perfloop-oss/casei · UNCATALOGUED MECHANISM · settled2026-10-08VERIFIED· Stream seven-name root counts on Sapphire Rapids · perfloop-oss/casei · INEFFICIENT ALGORITHM · settled2026-10-07VERIFIED· Remove field-map copying from default request access logs · perfloop-oss/skipper · AVOIDABLE COPY · settled2026-10-07VERIFIED· Do not credit capacity for an already-absent sandbox · perfloop-oss/runtime · UNCATALOGUED MECHANISM · settled2026-10-07VERIFIED· Reduce repeated grouping allocations for committed game inputs · perfloop-oss/spacetimedb · ALLOCATION HOT LOOP · settled2026-10-06VERIFIED· Delete-free row-ID scans still filter every row · perfloop-oss/datafusion-ducklake · INEFFICIENT ALGORITHM · settled2026-10-08VERIFIED· Sapphire Rapids: Confirm ASCII root matches without trie replay · perfloop-oss/casei · DEPENDENT LOAD CHAIN · settled2026-10-04VERIFIED· Sapphire Rapids: Stream three-name counts through root candidates · perfloop-oss/casei · INEFFICIENT ALGORITHM · settled2026-10-06VERIFIED· Sapphire Rapids: Return ASCII singleton matches and widths without decoding · perfloop-oss/casei · INEFFICIENT ALGORITHM · settled2026-10-04VERIFIED· Sapphire Rapids: Enable buckets for seven-name counts · perfloop-oss/casei · INEFFICIENT ALGORITHM · settled2026-10-06VERIFIED· Sparse keyword aggregations scan the full dictionary during result construction · perfloop-oss/elasticsearch · INEFFICIENT ALGORITHM · settled2026-10-03VERIFIED· Interim cross-cluster async search returns the wrong hit page · perfloop-oss/elasticsearch · UNCATALOGUED MECHANISM · settled2026-10-03VERIFIED· Avoid general exponentiation for every dense register · perfloop-oss/hyperloglog · INEFFICIENT ALGORITHM · settled2026-10-01VERIFIED· Streaming skip can loop forever when the input stops advancing · perfloop/pbj · NON PROGRESS LOOP · settled2026-10-01VERIFIED· Failed SSTable reads must not count as successful partition scans · perfloop/cass · IGNORED FAILURE · settled2026-10-01VERIFIED· Keep snapshot rows readable as table columns change · perfloop/influxdb · UNCATALOGUED MECHANISM · settled2026-09-30VERIFIED· Sapphire Rapids: Fuse tagged trigram scanning with literal enumeration · perfloop/casei · INEFFICIENT ALGORITHM · settled2026-09-29VERIFIED· Keep last-N CSV cells aligned with their field names · perfloop/victorialogs · IDENTITY COLLISION · settled2026-09-29VERIFIED· Unread rotated logs can be lost through a relative symlink · perfloop/victorialogs · VALUE KIND CONFUSION · settled2026-10-01VERIFIED· IDMP expiry cron skips per-slot alloc_size update, overstating CLUSTER SLOT-STATS memory · perfloop/redis · RESOURCE LEAK · settled2026-09-28VERIFIED· Mixed rate rollups can corrupt raw maximum values after resets · perfloop/victoriametrics · FAN OUT · settled2026-09-28VERIFIED· Negative slice underflow panics instead of clamping · perfloop/grol · EXTENT MISMATCH · settled2026-09-26VERIFIED· Stop the fast client spinning forever on chunked responses larger than its buffer · perfloop/fortio · NON PROGRESS LOOP · settled2026-09-27VERIFIED· Failed compound arithmetic must not overwrite its target · perfloop/grol · IGNORED FAILURE · settled2026-09-26VERIFIED· Fast client keeps a keep-alive socket after truncating an oversized response, so the next request reads leftover body bytes and fails · perfloop/fortio · EXTENT MISMATCH · settled2026-09-25VERIFIED· filterFadeIn copies every LB endpoint per request even when no endpoint is fading in · perfloop/skipper · AVOIDABLE COPY · settled2026-10-06VERIFIED· Unsorted merge of address-chunked eth_getLogs rewinds the fetch cursor and re-indexes logs · perfloop/rindexer · OVERFETCHING · settled2026-09-30VERIFIED· RTVIObserver keeps the id of every frame no branch handles, audio included, for the whole session · perfloop/pipecat · RESOURCE LEAK · settled2026-09-23VERIFIED· Close Serve listeners for removed node addresses · perfloop/tailscale · RESOURCE LEAK · settled2026-10-10VERIFIED· Prevent all-regional negative conditioning from aborting sampling · perfloop/comfyui · VALUE KIND CONFUSION · settled2026-09-22VERIFIED· History-node UPSERT sends each blob twice · perfloop/temporal · REDUNDANT SERIALIZATION · settled2026-09-16VERIFIED· Generic Call branch builds duplicate type-argument vectors · perfloop/baml · ALLOCATION HOT LOOP · settled2026-09-16VERIFIED· Sapphire Rapids: Scan interior ASCII windows before recovering variable-width prefixes · perfloop/casei · DATA PARALLEL GAP · settled2026-09-27PROPOSED· Borrow simple fused input instead of copying it · perfloop/basetenkenizer · AVOIDABLE COPY · opened2026-09-07OPEN· Direct initial-token lookup for encoded BPE characters · perfloop/basetenkenizer · POOR DATA LOCALITY · opened2026-09-07PROPOSED· Fuse safe scanner cuts directly into BPE · perfloop/basetenkenizer · ALLOCATION HOT LOOP · opened2026-09-07VERIFIED· Use stack merging for short encoded BPE pretokens · perfloop/fastokens · INEFFICIENT ALGORITHM · settled2026-09-09PROPOSED· Share fused pretoken results across worker caches · perfloop/fastokens · CACHE THRASH · opened2026-09-07CLOSED· Parallelize long scanner inputs at full-context pretoken cuts · perfloop/fastokens · DATA PARALLEL GAP · opened2026-09-07PROPOSED· Skip CRTC router-hint allocation on root misses · perfloop/dynamo · ALLOCATION HOT LOOP · opened2026-09-07OPEN· Conservatively stop CRTC traversal on contended state · perfloop/dynamo · LOCK CONTENTION · opened2026-09-07VERIFIED· Sapphire Rapids: Add a plan-owned bucket filter for literal alternatives · perfloop/casei · INEFFICIENT ALGORITHM · settled2026-09-28VERIFIED· Exact-case triple Shufti tables on Sapphire Rapids · perfloop/casei · DATA PARALLEL GAP · settled2026-09-04VERIFIED· Logprob streaming recopies cumulative token IDs before slicing each response delta · perfloop/dynamo · AVOIDABLE COPY · settled2026-09-07VERIFIED· Batch B-tree leaf-page TIDs into TIDBitmap · perfloop/postgres · POOR DATA LOCALITY · settled2026-09-13VERIFIED· Default ReleaseSafe inserts repeat object-cache absence probes · perfloop/tigerbeetle · INEFFICIENT ALGORITHM · settled2026-09-04VERIFIED· Resume safe ASCII probing after sparse exception clusters · perfloop/casei · DATA PARALLEL GAP · settled2026-09-01VERIFIED· Filter deleted and expired block headers before loading their payloads · perfloop/victoriametrics · LATE FILTERING · settled2026-09-26OPEN· Merge sorted raw-row runs before serializing an in-memory part · perfloop/victoriametrics · REDUNDANT SERIALIZATION · opened2026-08-26PROPOSED· Return one terminal sample for bare instant selectors instead of unpacking every · perfloop/victoriametrics · LATE FILTERING · opened2026-08-26PROPOSED· Send single-partition ingest blocks directly to their resolved partition · perfloop/victoriametrics · FAN OUT · opened2026-08-26PROPOSED· Avoid copying ordered pending blocks through tmpBlock · perfloop/victoriametrics · AVOIDABLE COPY · opened2026-08-26VERIFIED· Win all 18 Rebar literal workloads with one streaming plan · perfloop/casei · DATA PARALLEL GAP · settled2026-09-27VERIFIED· Keep N=1 Unicode confirmation inside the AVX-512 scan · perfloop/casei · LATE FILTERING · settled2026-08-22VERIFIED· Replace the decoded transition loop with one raw-byte plan · perfloop/casei · DEPENDENT LOAD CHAIN · settled2026-08-25VERIFIED· Full backlog sort before bounded transaction fetch · perfloop/go-ethereum · INEFFICIENT ALGORITHM · settled2026-08-23VERIFIED· Select direct peers without sorting every score · perfloop/go-ethereum · INEFFICIENT ALGORITHM · settled2026-08-23CLOSED· A/B the complete amd64 backend as Go archsimd · perfloop/casei · INEFFICIENT ALGORITHM · opened2026-08-17CLOSED· Compile shared interior UTF-8 anchors for multi-pattern plans · perfloop/casei · LATE FILTERING · opened2026-08-17CLOSED· Replace hot Unicode token-map probes with a compiled classifier · perfloop/casei · DEPENDENT LOAD CHAIN · opened2026-08-17VERIFIED· Keepalive failures repeatedly rescan the connection pool · perfloop/curl · INEFFICIENT ALGORITHM · settled2026-08-17VERIFIED· Batch LSM view setup for cache-miss distances · perfloop/weaviate · UNDER BATCHING · settled2026-08-17CLOSED· Batch conflict-deletion durability flushes · perfloop/weaviate · UNDER BATCHING · opened2026-08-15VERIFIED· Batch no-run container reads during decoding · perfloop/roaring · CHATTY IO · settled2026-09-15VERIFIED· Scalar XOR write loop after cardinality count · perfloop/roaring · DATA PARALLEL GAP · settled2026-08-27VERIFIED· Replace periodic commit-log Stat checks with byte-threshold signaling · perfloop/weaviate · POLLING LOOP · settled2026-08-16VERIFIED· Fuse Shufti four-way AND reduction · perfloop/casei · DATA PARALLEL GAP · settled2026-08-13VERIFIED· Quadratic tombstone-union work in sorted compaction · perfloop/weaviate · INEFFICIENT ALGORITHM · settled2026-08-20CLOSED· Overlap independent root comparisons across hosts · perfloop/weaviate · SERIAL WORK · opened2026-08-12OPEN· Skip noncompetitive rescore heap updates · perfloop/weaviate · INEFFICIENT ALGORITHM · opened2026-08-12VERIFIED· Narrow ACORN candidate-node lock scope · perfloop/weaviate · LOCK CONTENTION · settled2026-08-17CLOSED· Default propagation uses one worker · perfloop/weaviate · SERIAL WORK · opened2026-08-12VERIFIED· Batch-sized scratch allocation exceeds prefetch window · perfloop/weaviate · ALLOCATION HOT LOOP · settled2026-08-17VERIFIED· Bound block bookkeeping with compact intervals · perfloop/zed · INEFFICIENT ALGORITHM · settled2026-08-12VERIFIED· Gate Matrix visual reconstruction on actual symbol or color swaps · perfloop/ttfx · ALLOCATION HOT LOOP · settled2026-08-11VERIFIED· Compile pattern set for one shared traversal · perfloop/casei · INEFFICIENT ALGORITHM · settled2026-08-12VERIFIED· Eliminate cache-populate completion wait after upstream EOF · perfloop/tag · SYNC WAIT · settled2026-08-09VERIFIED· Resolve `previous_response_id` to a prompt prefix instead of replaying every Responses item · perfloop/ds4 · REDUNDANT SERIALIZATION · settled2026-08-30VERIFIED· Reserve repeated Vec across wire-tag decode loop · perfloop/prost · ALLOCATION HOT LOOP · settled2026-08-09VERIFIED· Avoid per-batch JSON decode and re-encode · perfloop/parseable · REDUNDANT SERIALIZATION · settled2026-08-20VERIFIED· Eliminate response JSON byte round-trip · perfloop/k6 · REDUNDANT SERIALIZATION · settled2026-08-12VERIFIED· Restore bounded span-only batches · perfloop/tempo · LOCK CONTENTION · settled2026-08-12VERIFIED· Counting scatter for dictionary index sorts · perfloop/arrow-rs · INEFFICIENT ALGORITHM · settled2026-08-07VERIFIED· Return early for constant sorting keys · perfloop/clickhouse · INEFFICIENT ALGORITHM · settled2026-08-07VERIFIED· Replace carry-chained 64-byte UTF-8 scans with boundary-summary block batches · perfloop/simdjson · DATA PARALLEL GAP · settled2026-08-06VERIFIED· Non-streaming scatter ordering resorts already ordered shard runs · perfloop/vitess · INEFFICIENT ALGORITHM · settled2026-08-04VERIFIED· Bulk tenant resolution removes per-object leader queries · perfloop/weaviate · N+1 · settled2026-08-13VERIFIED· Pool OTLP converter scratch state · perfloop/prometheus · ALLOCATION HOT LOOP · settled2026-08-10VERIFIED· Reuse scalar argument vectors across range-function steps · perfloop/prometheus · ALLOCATION HOT LOOP · settled2026-08-16VERIFIED· Replace repeated 512-by-256 Knuth division with a reusable Barrett quotient/remainder plan · perfloop/uint256 · INEFFICIENT ALGORITHM · settled2026-08-31VERIFIED· Elide full reciprocal correction verification · perfloop/uint256 · INEFFICIENT ALGORITHM · settled2026-08-04VERIFIED· Bypass long division for reduced small-modulus additions · perfloop/uint256 · INEFFICIENT ALGORITHM · settled2026-08-24VERIFIED· Set-based bitmap operations for BSI CompareValue · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-08-12VERIFIED· BCE, loop unrolling, and redundant copy elimination in lazyIORBitmap and lazyORBitmap · perfloop/roaring · DATA PARALLEL GAP · settled2026-08-04VERIFIED· Single-pass non-inplace bitmap intersection (AND) · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-08-27VERIFIED· Eliminate AsciiString's resize-copy after exact allocation · perfloop/netty · AVOIDABLE COPY · settled2026-08-04VERIFIED· Pack mixed-width UTF-32 blocks from width/error masks instead of scalarizing them · perfloop/simdutf · DATA PARALLEL GAP · settled2026-08-01VERIFIED· Normalize trailing decimal zeros before bigint comparison · perfloop/fast_float · INEFFICIENT ALGORITHM · settled2026-08-15VERIFIED· Skip irrelevant fractional truncation scan · perfloop/fast_float · INEFFICIENT ALGORITHM · settled2026-08-06VERIFIED· Conservative output slicing fragments safe UTF-16 conversion · perfloop/simdutf · INEFFICIENT ALGORITHM · settled2026-07-31VERIFIED· Build GRAPH.BULK topology from relation-partitioned coordinates and derive transposes once · perfloop/falkordb · INEFFICIENT ALGORITHM · settled2026-08-03VERIFIED· Cache the repeated bucket metric name · perfloop/prometheus · ALLOCATION HOT LOOP · settled2026-09-16VERIFIED· Skip label cloning without external labels · perfloop/prometheus · AVOIDABLE COPY · settled2026-08-22VERIFIED· Coalesce superseded file-search query signals · perfloop/codex · UNBOUNDED QUEUE · settled2026-08-26VERIFIED· Replace per-message MaxAge deletes with consumer-aware block-prefix expiry ranges · perfloop/nats-server · UNDER BATCHING · settled2026-08-12VERIFIED· Partially select oversized candidate rankings · perfloop/fsst · INEFFICIENT ALGORITHM · settled2026-07-24VERIFIED· Use the scope map for auto-import checks · perfloop/ruff · INEFFICIENT ALGORITHM · settled2026-07-23VERIFIED· Avoid transient table allocation during deserialization · perfloop/fsst · ALLOCATION HOT LOOP · settled2026-09-16VERIFIED· Mutate pending streamed text instead of cloning it · perfloop/grok-build · AVOIDABLE COPY · settled2026-07-26VERIFIED· Move the built request rather than clone it · perfloop/grok-build · AVOIDABLE COPY · settled2026-07-26VERIFIED· Stop futile string-frequency map growth at half cardinality · perfloop/btrblocks · ALLOCATION HOT LOOP · settled2026-08-17VERIFIED· Stream L0 index metadata instead of collecting and sorting · perfloop/neon · INEFFICIENT ALGORITHM · settled2026-08-25VERIFIED· Replace nested map slice partitioning with a schema-compiled level-cursor decoder · perfloop/parquet-go · INEFFICIENT ALGORITHM · settled2026-07-23VERIFIED· Index cross-file identifier candidates · perfloop/ruff · INEFFICIENT ALGORITHM · settled2026-08-12VERIFIED· Avoid per-match metadata probes during file search · perfloop/codex · N+1 · settled2026-07-24VERIFIED· Defer bitmap materialization for uniform validity slices · perfloop/btrblocks · ALLOCATION HOT LOOP · settled2026-07-24VERIFIED· Combined one-pass AVX-512 Int64 bounds kernel at default page size · perfloop/parquet-go · INEFFICIENT ALGORITHM · settled2026-07-21VERIFIED· Bulk-build duplicate-free JSON objects · perfloop/protobuf-py · INEFFICIENT ALGORITHM · settled2026-07-22VERIFIED· Defer Tag objects on known-field decoding · perfloop/protobuf-py · ALLOCATION HOT LOOP · settled2026-08-17VERIFIED· A stale account entry flushes unrelated route-cache entries · perfloop/nats-server · CACHE THRASH · settled2026-07-20REFUTED· Single-pass min/max calculation for page bounds below threshold · perfloop/parquet-go · INEFFICIENT ALGORITHM · settled2026-07-19VERIFIED· Index conditional CSS import deduplication · perfloop/esbuild · INEFFICIENT ALGORITHM · settled2026-08-17VERIFIED· Stream rebuilt projection blocks through one bounded run merger into the final · perfloop/clickhouse · INEFFICIENT ALGORITHM · settled2026-09-06REFUTED· Remove per-command AOF staging copy · perfloop/redis · AVOIDABLE COPY · settled2026-07-18CLOSED· Reserve conversion capacity for diagnostic batches · perfloop/esbuild · ALLOCATION HOT LOOP · opened2026-07-18VERIFIED· Stream typed JSON lists without an adapter slice · perfloop/kubernetes · AVOIDABLE COPY · settled2026-08-17VERIFIED· Reuse DD writer scaffolding to cut per-packet marshal allocations · perfloop/livekit · ALLOCATION HOT LOOP · settled2026-08-17VERIFIED· Replace Bitmap.Or’s repeated high-key slice inserts with one planned backward merge · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-07-16VERIFIED· Decode dense bitmap containers with TrailingZeros64 · perfloop/roaring · DATA PARALLEL GAP · settled2026-07-12VERIFIED· Concurrent Manifest Dependency Verification · perfloop/distribution · SERIAL WORK · settled2026-07-09VERIFIED· O(N²) RangeTombstoneList copying on range-tombstone memtable merges · perfloop/cassandra · INEFFICIENT ALGORITHM · settled2026-07-09VERIFIED· Bound BSI BatchEqual memory on scattered IN-lists · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-07-08VERIFIED· Bypassed VAD speech activity throttling causes excessive frame processing overhead · perfloop/pipecat · CHATTY IO · settled2026-09-16VERIFIED· Avoid high-frequency heap allocation and buffer copying of immutable bytes in VAD · perfloop/pipecat · ALLOCATION HOT LOOP · settled2026-09-17VERIFIED· Redundant duplicate SHA256 hashing during fallback blob validation · perfloop/distribution · INEFFICIENT ALGORITHM · settled2026-08-17VERIFIED· Reuse scratch subject buffer in processMsgResults to eliminate heap allocation on hot · perfloop/nats-server · ALLOCATION HOT LOOP · settled2026-10-03VERIFIED· Avoid copying EndpointBuilder struct in buildEndpoints · perfloop/istio · AVOIDABLE COPY · settled2026-08-23VERIFIED· Vectorize BSI BatchEqual with bitwise set operations · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-07-01VERIFIED· variant.Marshal builds a throwaway Value tree then re-serializes it · perfloop/parquet-go · REDUNDANT SERIALIZATION · settled2026-07-02VERIFIED· Defer RunOptimize until after bitmap population in batchEqual · perfloop/roaring · INEFFICIENT ALGORITHM · settled2026-08-04VERIFIED· Quadratic repository matching scan in selectRepoSet for branch-targeted queries · perfloop/zoekt · INEFFICIENT ALGORITHM · settled2026-08-13VERIFIED· Single-column row comparator dispatches through interface, copying two Values · perfloop/parquet-go · INDIRECT DISPATCH HOT LOOP · settled2026-06-25VERIFIED· CloseTransaction hydrates task-free CHASM nodes it then discards · perfloop/temporal · LATE FILTERING · settled2026-06-25VERIFIED· Avoid heap allocation of packetInfo in TWCC feedback processing loop · perfloop/livekit · ALLOCATION HOT LOOP · settled2026-06-24VERIFIED· Parallelize independent resource reconciliation in createBranchResources · perfloop/neon-operator · FAN OUT · settled2026-08-18VERIFIED· Avoid dynamic reflect.ValueOf allocations per row inside writeRowsFuncOfTime loop · perfloop/parquet-go · ALLOCATION HOT LOOP · settled2026-06-19VERIFIED· Avoid assembly call overhead for small slices in SumUint16 · perfloop/asm · INEFFICIENT ALGORITHM · settled2026-07-30VERIFIED· Redundant UTF-8 Decoding and Case-Folding on ASCII Content · perfloop/zoekt · INEFFICIENT ALGORITHM · settled2026-07-07VERIFIED· Repeated sorting and truncation of matched files on every search result chunk · perfloop/zoekt · INEFFICIENT ALGORITHM · settled2026-08-03