Repository navigation

fanout: thin jobs, one injector, a heartbeat, and a futex parker - #4

Merged

pathscale merged 23 commits into

mainfrom

perf/skip-the-wake-when-nobody-sleeps

Sep 9, 2026

Merged

fanout: thin jobs, one injector, a heartbeat, and a futex parker#4
pathscale merged 23 commits into
mainfrom
perf/skip-the-wake-when-nobody-sleeps

Commits on Sep 7, 2026
- Read the sleeper bitmap before writing it
  meh
  committed
  0e31381
- Look again before parking
  meh
  committed
  707731a
- Back off between empty rounds, and let the caller tune it
  meh
  committed
  1929d39
- Take no lock to park or unpark unless a thread must sleep
  meh
  committed
  3d67867
Commits on Sep 8, 2026
- Give the pool forte's shape: thin jobs, one injector, a heartbeat
  
  meh
  and
  claude
  committed
  22b5975
- Park on a futex, not a condition variable, and drop the timeout with it
  
  meh
  and
  claude
  committed
  1bf9e82
- Wait longer between empty looks, and make the batch tunable
  
  meh
  and
  claude
  committed
  ce18204
- Take forte's semaphore, and delete the pool's most contended line
  
  meh
  and
  claude
  committed
  d999e93
- Keep the 1.60 floor, the formatter, and CI's `-D warnings`
  
  meh
  and
  claude
  committed
  2b92fa4
- Fix the review's four merge blockers, and one the review led me to
  
  meh
  and
  claude
  committed
  2f79e5c
- Bound how much work one worker can hide, and prove the bound
  
  meh
  and
  claude
  committed
  4622cb4
- Take one job off the injector, not eight, because batching only looked free
  
  meh
  and
  claude
  committed
  509fc9f
Commits on Sep 9, 2026
- Write down what would sit on top of these queues, and name it
  meh
  committed
  169865d
- Take eight jobs off the injector again: batching was not free
  meh
  committed
  7b42f11
- Let a worker hand work back to itself, instead of to the injector
  meh
  committed
  a03cb63
- Feed the inbox into the private deque, not straight to the CPU
  meh
  committed
  f5fc27d
- Give each worker a LIFO slot for the task that woke itself
  meh
  committed
  cbe25a0
- Take one job off the injector, and cap how many workers hunt at once
  meh
  committed
  3396a89
- Put a barrier between publishing to a worker and reading whether it sleeps
  meh
  committed
  a4f913f
- Make local wakes a policy, because the workloads want opposite answers
  meh
  committed
  f7d02ab
- Name the tuning trade instead of hiding it in a bool
  meh
  committed
  b137683
- Make Tuning a type a new field can be added to
  meh
  committed
  273cf4c
- Release 0.6.0
  meh
  committed
  8cce8b1

Commits

Commits on Sep 7, 2026

Commits on Sep 8, 2026

Commits on Sep 9, 2026