sqpoll
HoldTechniques
io_uring submission-queue polling mode that uses a spinning thread to process work.
Why it's here
Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 4Hacker News·9/1/2026researchTurso Tests Readahead for io_uring Without Kernel Buffered I/O
A Hacker News post describes experiments adding readahead to Turso’s io_uring backend, which uses O_DIRECT and therefore cannot rely on kernel readahead. The measurements on a TPC-H workload show fewer device requests and better performance when application-level prefetching is enabled, largely because multiple reads can be in flight and merged by the kernel. The post also notes that btree-aware readahead could be more accurate than guessing from sequential file offsets.