v1.19.1
diffusionstudio/corev1.19.1Sep 4, 2026by timvisee
Upgrading?
AI Summary
Performance optimizations for Qdrant including speedups for quantized scoring, HNSW batch searching, and memory reporting. Fixes include data consistency, Gridstore panics, and validation for vector dimensions.
Key Highlights
- Speed up and saturate memory bandwidth in quantized scoring
- Batch searches in HNSW for faster performance
- Faster memory reporting on Linux using cachestat
- Fixes for Gridstore panic and data consistency issues
New Features
- Batch deletion checks for faster full scans
- Support for fast HNSW healing cancellation
- Exposure of CPU cores used in `/metrics`
- Validation fixes for vector sizes and dimensions
Full Release Notes
# Change log ## Improvements * https://github.com/qdrant/qdrant/pull/10342, https://github.com/qdrant/qdrant/pull/10420 - Speed up and saturate memory bandwidth in quantized scoring with prefetching * https://github.com/qdrant/qdrant/pull/10391, https://github.com/qdrant/qdrant/pull/10392, https://github.com/qdrant/qdrant/pull/10362, https://github.com/qdrant/qdrant/pull/10437, https://github.com/qdrant/qdrant/pull/10439, https://github.com/qdrant/qdrant/pull/10381 - Rework and batch 4-bit TurboQuant SIMD implementation for better performance * https://github.com/qdrant/qdrant/pull/10441 - Limit query plane allocations for better search performance * https://github.com/qdrant/qdrant/pull/8650 - Improve L2 cosine preprocessing performance on AVX * https://github.com/qdrant/qdrant/pull/10042 - Batch deletion checks for faster full scans * https://github.com/qdrant/qdrant/pull/10054, https://github.com/qdrant/qdrant/pull/10010, https://github.com/qdrant/qdrant/pull/10194 - Batch searches in HNSW for faster search * https://github.com/qdrant/qdrant/pull/10099 - Skip bad items before pushing into HNSW priority queue * https://github.com/qdrant/qdrant/pull/10312, https://github.com/qdrant/qdrant/pull/10333 - Skip point ID resolution in search post processing to improve search performance * https://github.com/qdrant/qdrant/pull/10040, https://github.com/qdrant/qdrant/pull/10066 - Use raw payloads in shard transfer to make payload heavy shard transfers 1.5x faster * https://github.com/qdrant/qdrant/pull/9760 - Make set replica state and abort transfer/resharding crash safe to prevent consensus desync * https://github.com/qdrant/qdrant/pull/9786 - Make restart transfer operation crash safe to prevent consensus desync * https://github.com/qdrant/qdrant/pull/10345 - Query shard status more efficiently, don't build full segment info * https://github.com/qdrant/qdrant/pull/10455 - Faster memory reporting on Linux with cachestat * https://github.com/qdrant/qdrant/pull/10457 - Probe segment memory utilization outside of read locks * https://github.com/qdrant/qdrant/pull/10027 - Honor `max_segment_size` on filter based updates * https://github.com/qdrant/qdrant/pull/10426 - Support fast HNSW healing cancellation to prevent blocking consensus on shard drop * https://github.com/qdrant/qdrant/pull/10306 - Raise HTTP2 max pending resets on gRPC API to allow higher connection concurrency * https://github.com/qdrant/qdrant/pull/10243 - Expose used CPU cores in `/metrics` (`cpu_cores_used`) * https://github.com/qdrant/qdrant/pull/10132 - Extend container runtime detection, include Kubernetes and other runtimes ## Bug Fixes * https://github.com/qdrant/qdrant/pull/10201 - Fix data consistency, flush CoW segments before building payload index * https://github.com/qdrant/qdrant/pull/10399 - Fix Gridstore panic on new page after unsafe shutdown, repairs preexisting failures * https://github.com/qdrant/qdrant/pull/10205 - On aborting resharding down, don't block consensus with deferred points for along time * https://github.com/qdrant/qdrant/pull/10324 - Reject vector size larger than 65536 * https://github.com/qdrant/qdrant/pull/10143 - Reject empty dense vectors * https://github.com/qdrant/qdrant/pull/10374 - Reject mismatched dimension count in positive/negative examples of recommend average API * https://github.com/qdrant/qdrant/pull/10382 - Not specifying scroll `limit` would bypass `max_query_limit` * https://github.com/qdrant/qdrant/pull/10128 - Prevent underestimating `is_empty` and `is_null` cardinality * https://github.com/qdrant/qdrant/pull/10101 - Fix `is_null` filter for unindexed payload fields * https://github.com/qdrant/qdrant/pull/10341 - Fix phrase matching on unindexed payload field not respecting token positioning * https://github.com/qdrant/qdrant/pull/10181 - Propagate mmap read errors back to user rather than panicking * https://github.com/qdrant/qdrant/pull/10338 - Fix concurrent consensus operations awaiters dropping each other * https://github.com/qdrant/qdrant/pull/9957 - Limit tracing ID by 256 bytes, not characters * https://github.com/qdrant/qdrant/pull/9959 - Clamp picking random HNSW layer to lower bound of zero ## Security * https://github.com/qdrant/qdrant/pull/10242 - Reject `.` and `..` in collection names
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