Issues

• Scheduler metrics: plain counter writes race the monitor thread's reads (TSan, and a possible torn read on 32-bit)

  lalinsky/zio#912 · Filter by author dimenus opened on Nov 7, 2026

• CI: package installs can hang (Wine, QEMU), and the QEMU step has no timeout

  testing
  lalinsky/zio#894 · Filter by author lalinsky opened on Nov 5, 2026
  1

• Flaky: "tcpConnectToHost: basic" hangs under Wine (release)

  testing
  lalinsky/zio#893 · Filter by author lalinsky opened on Nov 5, 2026

• Flaky: "runtime: multi-threaded execution with max executors" hangs on NetBSD

  testing
  lalinsky/zio#892 · Filter by author lalinsky opened on Nov 5, 2026

• Flaky: "AutoCancel: a deadline kept moving later does not fire until it stops" reports Canceled on OpenBSD

  testing
  lalinsky/zio#891 · Filter by author lalinsky opened on Nov 5, 2026

• Timed waits arm the timer before submitting the operation

  lalinsky/zio#874 · Filter by author lalinsky opened on Nov 2, 2026

• iocp: a send that fails with WSAEMSGSIZE completes twice

  lalinsky/zio#835 · Filter by author lalinsky opened on Oct 19, 2026

• Native batch send API (Socket.sendToBatch)

  lalinsky/zio#834 · Filter by author lalinsky opened on Oct 18, 2026

• Expose non-blocking socket reads (tryRead) in the public API

  lalinsky/zio#815 · Filter by author lalinsky opened on Oct 9, 2026

• Runtime gauges (live tasks, queue depths) for monitoring

  lalinsky/zio#814 · Filter by author lalinsky opened on Oct 9, 2026

• setupStackGrowth/cleanupStackGrowth break when two runtimes overlap on one thread

  lalinsky/zio#811 · Filter by author lalinsky opened on Oct 9, 2026
  2

• Future.cancel / JoinHandle.cancel / join can swallow the caller's cancellation

  lalinsky/zio#810 · Filter by author lalinsky opened on Oct 9, 2026

• Tracking: OS primitives for storage engines (fpindex)

  fsmissing functionality
  lalinsky/zio#802 · Filter by author lalinsky opened on Oct 6, 2026

• File.advise: page cache hints (posix_fadvise)

  ev/io_uringfsmissing functionality
  lalinsky/zio#801 · Filter by author lalinsky opened on Oct 6, 2026

• Filesystem space query (statfs/statvfs)

  fsmissing functionality
  lalinsky/zio#800 · Filter by author lalinsky opened on Oct 6, 2026

• File.allocate: preallocate disk space (fallocate)

  ev/io_uringfsmissing functionality
  lalinsky/zio#799 · Filter by author lalinsky opened on Oct 6, 2026

• Memory primitives: anonymous mappings, madvise and mlock

  enhancementmissing functionality
  lalinsky/zio#798 · Filter by author lalinsky opened on Oct 6, 2026

• Dir.renameExchange: atomically swap two paths

  ev/io_uringfsmissing functionality
  lalinsky/zio#797 · Filter by author lalinsky opened on Oct 6, 2026

• Flaky: ev timer tests' wall-clock upper bounds fail on macOS release runners

  testing
  lalinsky/zio#796 · Filter by author lalinsky opened on Oct 6, 2026
  2

• Flaky: "multi-executor: timeout cancel racing a cross-loop readiness edge" reports Canceled on Windows (iocp, ReleaseSafe)

  testing
  lalinsky/zio#785 · Filter by author lalinsky opened on Oct 4, 2026
  2

• Flaky: "Blocking sockets: recv on a nonblocking socket waits for data" hangs on OpenBSD

  testing
  lalinsky/zio#748 · Filter by author lalinsky opened on Sep 23, 2026

• Live-DNS tests fail the CI job when the runner's system resolver does not answer

  bugnettesting
  lalinsky/zio#743 · Filter by author lalinsky opened on Sep 22, 2026

• Let socket registrations follow a migrated task, with a guard against thrashing

  enhancementev/epollev/kqueueevent loopscheduler
  lalinsky/zio#741 · Filter by author lalinsky opened on Sep 22, 2026

• Remove deprecated aliases

  lalinsky/zio#720 · Filter by author lalinsky opened on Aug 29, 2026 · 1.0

• Flaky: CompletionQueue "select fast path on an already finished completion" times out on mac-intel ReleaseFast

  testing
  lalinsky/zio#710 · Filter by author lalinsky opened on Aug 24, 2026