macos-homebrew-4.14_arm64_opam-2.5

2026-02-13 08:07.01: New job: test ocaml-multicore/multicore-bench https://github.com/ocaml-multicore/multicore-bench.git#refs/heads/main (efb15d8562dbdc1ba976ffc574de028e3c11c123) (macos-arm64:macos-homebrew-4.14_arm64_opam-2.5)
Base: macos-homebrew-ocaml-4.14
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/multicore-bench.git" -b "main" && cd "multicore-bench" && git reset --hard efb15d85
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM macos-homebrew-ocaml-4.14
# macos-homebrew-4.14_arm64_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
RUN ln -f ~/local/bin/opam-2.5 ~/local/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
RUN cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 multicore-bench.opam ./src/./
RUN opam pin add -yn multicore-bench.dev './src/./'
RUN echo '(lang dune 3.0)' > './src/./dune-project'
ENV DEPS="astring.0.8.5 backoff.0.1.1 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.21.1 fmt.0.11.0 logs.0.10.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.14.0 result.1.5 thread-table.1.0.0 topkg.1.1.1 yojson.3.0.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.5 --depext-only -y multicore-bench.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . ./src
RUN cd ./src && opam exec -- dune build @install @check @runtest && rm -rf _build


END-OF-DOCKERFILE
docker build .
END-REPRO-BLOCK


2026-02-13 08:07.01: Using cache hint "ocaml-multicore/multicore-bench-macos-homebrew-ocaml-4.14-macos-homebrew-4.14_arm64_opam-2.5-3276ee940043c1e69634f204ac603fad"
2026-02-13 08:07.01: Using OBuilder spec:
((from macos-homebrew-ocaml-4.14)
(comment macos-homebrew-4.14_arm64_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(run (shell "ln -f ~/local/bin/opam-2.5 ~/local/bin/opam"))
(run (shell "opam init --reinit -ni"))
(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
(run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src multicore-bench.opam) (dst ./src/./))
(run (network host)
(shell "opam pin add -yn multicore-bench.dev './src/./'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './src/./dune-project'"))
(env DEPS "astring.0.8.5 backoff.0.1.1 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.21.1 fmt.0.11.0 logs.0.10.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.14.0 result.1.5 thread-table.1.0.0 topkg.1.1.1 yojson.3.0.0")
(env CI true)
(env OCAMLCI true)
(run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "opam update --depexts && opam install --cli=2.5 --depext-only -y multicore-bench.dev $DEPS"))
(run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "opam install $DEPS"))
(copy (src .) (dst ./src))
(run (shell "cd ./src && opam exec -- dune build @install @check @runtest && rm -rf _build"))
)


2026-02-13 08:07.01: Waiting for resource in pool OCluster
2026-02-13 10:06.18: Waiting for worker…
2026-02-13 12:03.35: Got resource from pool OCluster
Building on m1-worker-03
All commits already cached
HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll


(from macos-homebrew-ocaml-4.14)
2026-02-13 12:03.36 ---> using "0c60f117aee57abea8364cb033d47bb1d63ff0f68e5ee97378e032498e8442af" from cache


/: (comment macos-homebrew-4.14_arm64_opam-2.5)


/: (user (uid 1000) (gid 1000))


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (run (shell "ln -f ~/local/bin/opam-2.5 ~/local/bin/opam"))
2026-02-13 12:03.36 ---> using "75b1629629d7f21c50a7e1e39b2ef83e2edb8ace81aab34254c0c8782b814749" from cache


/: (run (shell "opam init --reinit -ni"))
No configuration file found, using built-in defaults.
Checking for available remotes: rsync and local, git.
- you won't be able to use mercurial repositories unless you install the hg command on your system.
- you won't be able to use darcs repositories unless you install the darcs command on your system.


This version of opam requires an update to the layout of /Users/mac1000/.opam from version 2.1 to version 2.2, which can't be reverted.
You may want to back it up before going further.


Continue? [Y/n] y
[NOTE] The 'jobs' option was reset, its value was 1 and its new value will vary according to the current number of cores on your machine. You can restore the fixed value using:
opam option jobs=1 --global
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] no changes from git+file:///Users/mac1000/opam-repository
2026-02-13 12:03.36 ---> using "a61e945ab7671a6fff400f946e3fe88df4d67a783ea1f56fa59dc21595ef1b19" from cache


/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Darwin 24.5.0
The OCaml toplevel, version 4.14.2
2.5.0
2026-02-13 12:03.36 ---> using "11a9923a4c4f0ab256d15330129e4c4938459d2e6239eb4f7bdf0f2620300e09" from cache


/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
95f7875db7..302e116c40  master     -> origin/master
302e116c40 Merge pull request #29374 from shonfeder/release-dune-3.21.1


<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///Users/mac1000/opam-repository


Everything as up-to-date as possible


The following packages are not being upgraded because the new versions conflict with other installed packages:
- ocaml.5.4.0
- ocaml-config.3
However, you may "opam upgrade" these packages explicitly at these versions (e.g. "opam upgrade ocaml.5.4.0"), which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2026-02-13 12:03.36 ---> using "8e0a049cf56382e71efda2842d05633f0e6e6b1ee13eef2b96740d32a526d9ad" from cache


/: (copy (src multicore-bench.opam) (dst ./src/./))
2026-02-13 12:03.37 ---> saved as "795c8048fc309459419e0ed5c8b0d753a2c344c837821e3294623384d25058c9"


/: (run (network host)
(shell "opam pin add -yn multicore-bench.dev './src/./'"))
[multicore-bench.dev] synchronised (file:///Users/mac1000/src)
multicore-bench is now pinned to file:///Users/mac1000/src (version dev)
2026-02-13 12:03.47 ---> saved as "6a2e8211745240f121a124bb2fe390a97481d5e87d8683a7e56fedb96f2d9ef1"


/: (run (network host)
(shell "echo '(lang dune 3.0)' > './src/./dune-project'"))
2026-02-13 12:03.48 ---> saved as "c8617614536e871178fcc357817ba8db24f8bf1b8c218297ca6e7f910dc33d7e"


/: (env DEPS "astring.0.8.5 backoff.0.1.1 base-bigarray.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.21.1 fmt.0.11.0 logs.0.10.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.14.0 result.1.5 thread-table.1.0.0 topkg.1.1.1 yojson.3.0.0")


/: (env CI true)


/: (env OCAMLCI true)


/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "opam update --depexts && opam install --cli=2.5 --depext-only -y multicore-bench.dev $DEPS"))
+ /opt/homebrew/bin/brew "update"
- ==> Updating Homebrew...
- Already up-to-date.


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[multicore-bench.dev] synchronised (file:///Users/mac1000/src)


[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 2).
[NOTE] Package ocaml-base-compiler is already installed (current version is 4.14.2).
[NOTE] Package ocaml is already installed (current version is 4.14.2).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
# To update the current shell environment, run: eval $(opam env)
2026-02-13 12:04.04 ---> saved as "5dfdf41336794befc988f9ee4701a2386ff72264ed91fcef1236307d650b6eef"


/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 2).
[NOTE] Package ocaml-base-compiler is already installed (current version is 4.14.2).
[NOTE] Package ocaml is already installed (current version is 4.14.2).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 22 packages
- install astring            0.8.5
- install backoff            0.1.1
- install camlp-streams      5.0.1
- install cmdliner           2.1.0
- install cppo               1.8.0
- install csexp              1.5.2
- install domain-local-await 1.0.1
- install domain_shims       0.1.0
- install dune               3.21.1
- install fmt                0.11.0
- install logs               0.10.0
- install mdx                2.5.1
- install mtime              2.1.0
- install multicore-magic    2.3.2
- install ocaml-version      4.0.3
- install ocamlbuild         0.16.1
- install ocamlfind          1.9.8
- install re                 1.14.0
- install result             1.5
- install thread-table       1.0.0
- install topkg              1.1.1
- install yojson             3.0.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain_shims.0.1.0  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved logs.0.10.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.2  (cached)
-> retrieved ocaml-version.4.0.3  (cached)
-> retrieved mdx.2.5.1  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved re.1.14.0  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved result.1.5  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved yojson.3.0.0  (cached)
-> retrieved dune.3.21.1  (cached)
-> installed cmdliner.2.1.0
-> installed ocamlbuild.0.16.1
-> installed ocamlfind.1.9.8
-> installed topkg.1.1.1
-> installed mtime.2.1.0
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed logs.0.10.0
-> installed dune.3.21.1
-> installed domain_shims.0.1.0
-> installed csexp.1.5.2
-> installed camlp-streams.5.0.1
-> installed backoff.0.1.1
-> installed multicore-magic.2.3.2
-> installed result.1.5
-> installed thread-table.1.0.0
-> installed ocaml-version.4.0.3
-> installed cppo.1.8.0
-> installed domain-local-await.1.0.1
-> installed yojson.3.0.0
-> installed re.1.14.0
-> installed mdx.2.5.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-02-13 12:04.45 ---> saved as "ddcdbf7b9407560e2016d579c8c93e9d08c79e4ed9b87d794247b81007d25e65"


/: (copy (src .) (dst ./src))
2026-02-13 12:04.46 ---> saved as "07cecf0875ac26b66bf136cff696a475d2aefbbc22c682260978f05b440eab4f"


/: (run (shell "cd ./src && opam exec -- dune build @install @check @runtest && rm -rf _build"))
(cd _build/default/bench && ./main.exe -brief)
Atomic:
ops over time/cas int:
365.74 M/s
ops over time/get:
4214.96 M/s
ops over time/incr:
397.35 M/s
ops over time/push & pop:
170.54 M/s
ops over time/swap:
218.20 M/s
ops over time/xchg int:
365.74 M/s
time per op/cas int:
2.73 ns
time per op/get:
0.24 ns
time per op/incr:
2.52 ns
time per op/push & pop:
5.86 ns
time per op/swap:
4.58 ns
time per op/xchg int:
2.73 ns
Atomic incr:
ops over time/CAS, 1 domains:
332.13 M/s
ops over time/CAS with backoff, 1 domains:
332.50 M/s
ops over time/Incr, 1 domains:
408.16 M/s
time per op/CAS, 1 domains:
3.01 ns
time per op/CAS with backoff, 1 domains:
3.01 ns
time per op/Incr, 1 domains:
2.45 ns
Bounded_q:
messages over time/one domain:
19.35 M/s
time per message/one domain:
51.68 ns
Hashtbl:
operations over time/1 worker, 10% reads:
20.75 M/s
operations over time/1 worker, 50% reads:
20.21 M/s
operations over time/1 worker, 90% reads:
27.90 M/s
operations over time/2 workers, 10% reads:
20.68 M/s
operations over time/2 workers, 50% reads:
20.19 M/s
operations over time/2 workers, 90% reads:
27.78 M/s
operations over time/4 workers, 10% reads:
20.63 M/s
operations over time/4 workers, 50% reads:
20.17 M/s
operations over time/4 workers, 90% reads:
27.76 M/s
operations over time/8 workers, 10% reads:
20.40 M/s
operations over time/8 workers, 50% reads:
20.01 M/s
operations over time/8 workers, 90% reads:
27.49 M/s
operations over time/one domain, 10% reads:
29.98 M/s
operations over time/one domain, 50% reads:
29.38 M/s
operations over time/one domain, 90% reads:
40.96 M/s
time per operation/1 worker, 10% reads:
48.20 ns
time per operation/1 worker, 50% reads:
49.48 ns
time per operation/1 worker, 90% reads:
35.85 ns
time per operation/2 workers, 10% reads:
96.70 ns
time per operation/2 workers, 50% reads:
99.06 ns
time per operation/2 workers, 90% reads:
72.00 ns
time per operation/4 workers, 10% reads:
193.87 ns
time per operation/4 workers, 50% reads:
198.27 ns
time per operation/4 workers, 90% reads:
144.12 ns
time per operation/8 workers, 10% reads:
392.17 ns
time per operation/8 workers, 50% reads:
399.80 ns
time per operation/8 workers, 90% reads:
291.05 ns
time per operation/one domain, 10% reads:
33.36 ns
time per operation/one domain, 50% reads:
34.04 ns
time per operation/one domain, 90% reads:
24.42 ns
Queue:
messages over time/one domain:
54.63 M/s
time per message/one domain:
18.30 ns
Ref with Mutex:
ops over time/cas int:
57.81 M/s
ops over time/get:
65.59 M/s
ops over time/incr:
65.43 M/s
ops over time/push & pop:
56.88 M/s
ops over time/swap:
61.29 M/s
ops over time/xchg int:
58.02 M/s
time per op/cas int:
17.30 ns
time per op/get:
15.25 ns
time per op/incr:
15.28 ns
time per op/push & pop:
17.58 ns
time per op/swap:
16.32 ns
time per op/xchg int:
17.24 ns
Ref with [@poll error]:
ops over time/cas int:
365.74 M/s
ops over time/get:
4213.47 M/s
ops over time/incr:
461.19 M/s
ops over time/push & pop:
170.31 M/s
ops over time/swap:
216.92 M/s
ops over time/xchg int:
365.74 M/s
time per op/cas int:
2.73 ns
time per op/get:
0.24 ns
time per op/incr:
2.17 ns
time per op/push & pop:
5.87 ns
time per op/swap:
4.61 ns
time per op/xchg int:
2.73 ns
Stack:
messages over time/one domain:
59.69 M/s
time per message/one domain:
16.75 ns
Unix:
blocking reads over time/1 worker:
1.15 M/s
time per blocking read/1 worker:
869.96 ns
2026-02-13 12:04.49 ---> saved as "62f14f88d28847cb2a67ade974cab62f66789d29f40016027e8b670f5abf7280"
Job succeeded
2026-02-13 12:04.53: Job succeeded