docs: thread pool#31
Open
Scofield626 wants to merge 4 commits into
Open
Conversation
- Nice is Linux-only too: on non-Linux only `Fair` is applied; `Nice`,
`Fifo`, and `RoundRobin` all fall back per `on_error`.
- Note that negative niceness needs `CAP_SYS_NICE` like the RT policies.
- State the default `background` pool size (2 threads, no affinity, Fair).
- Call out that unknown pool names and `(pool: "rt")` on a background
task are compile-time errors.
- For the reserved `rt` pool, clarify that `parallel-rt` sizes workers
by stage count, so `threads:` is ignored -- size `affinity` instead.
- Add a "Determinism and replay" section: pool config is performance-only,
the CopperList stream is bit-identical with/without an `rt` pool, and
mutating `config.runtime.thread_pools` is the supported neutralization
hook for replay/resim on hosts that can't pin.
gbin
requested changes
Jun 18, 2026
gbin
left a comment
gbin
left a comment
Collaborator
There was a problem hiding this comment.
some terminology confusion
gbin
approved these changes
Jul 9, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Add a new chapter covering runtime.thread_pools, CPU affinity, scheduling policies, and the rt-scheduling feature.
Document the reserved background and rt pools, including custom background: (pool: "...") task binding.
Update related performance/task docs to point from the older threadpool resource bundle wording to the new runtime thread pool configuration.