macos-homebrew-5.4_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-5.4_arm64_opam-2.5)
Base: macos-homebrew-ocaml-5.4
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-5.4
# macos-homebrew-5.4_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-domains.base base-effects.base base-nnp.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.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 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-5.4-macos-homebrew-5.4_arm64_opam-2.5-ca9771ecc62fd6bbba007243926da734"
2026-02-13 08:07.01: Using OBuilder spec:
((from macos-homebrew-ocaml-5.4)
(comment macos-homebrew-5.4_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-domains.base base-effects.base base-nnp.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.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 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 10:05.39: Waiting for worker…
2026-02-13 12:03.08: Got resource from pool OCluster
Building on m1-worker-01
All commits already cached
HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll


(from macos-homebrew-ocaml-5.4)
2026-02-13 12:03.08 ---> using "338135fbf1889e924a607b47198b8b308c32a925cc9436066d65a9bdc402cad5" from cache


/: (comment macos-homebrew-5.4_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 12:03.08 ---> using "0e9d0f8ed44ab1f77ef30c8d8456629e6c63f869a24319cbb64657a84e315111" 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 12:03.08 ---> using "06effe220fa63e5f9fae9bf4643255961d59bf292a94931a0e1dd6d81a9fa7c6" from cache


/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Darwin 24.5.0
The OCaml toplevel, version 5.4.0
2.5.0
2026-02-13 12:03.09 ---> using "78e99acc02a52806060d0075d40f6ea681e9ef77eb60ecbbaff6e5155272646b" 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
043b6ea343..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


Already up-to-date.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2026-02-13 12:03.09 ---> using "fb91cd530a120a6315ab9b3a2e0673d2f54fa69534b2b521f1d52968188d071b" from cache


/: (copy (src multicore-bench.opam) (dst ./src/./))
2026-02-13 12:03.10 ---> saved as "281efaad805c6274243ef17d0592236f53c1d4cf193800e3dc641eba3c3f48ef"


/: (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 12:03.20 ---> saved as "b681967688be2dea4ec8aaf91903ac5b5f0079f87458d651a639768db4811c10"


/: (run (network host)
(shell "echo '(lang dune 3.0)' > './src/./dune-project'"))
2026-02-13 12:03.21 ---> saved as "e405df5933dde2c27425203e8011cc8a4f756b3cb2cc5ecac6c048f27e7ede8d"


/: (env DEPS "astring.0.8.5 backoff.0.1.1 base-bigarray.base base-domains.base base-effects.base base-nnp.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.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 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 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml is already installed (current version is 5.4.0).
[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-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains 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 12:03.37 ---> saved as "756c20905006bdd1f03ccd1e5885b81f84d62232e6918fcaa0a50f7e19d59287"


/: (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 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml is already installed (current version is 5.4.0).
[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-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains 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 backoff.0.1.1
-> installed ocaml-version.4.0.3
-> installed multicore-magic.2.3.2
-> installed result.1.5
-> installed thread-table.1.0.0
-> installed camlp-streams.5.0.1
-> installed cppo.1.8.0
-> installed domain-local-await.1.0.1
-> installed re.1.14.0
-> installed yojson.3.0.0
-> installed mdx.2.5.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-02-13 12:04.21 ---> saved as "74a56f2109b10a9a3dc29c353c3ffef1df1c7e2c13058e8c138a5c14bd202b80"


/: (copy (src .) (dst ./src))
2026-02-13 12:04.22 ---> saved as "32129a09dbad3e91271a0c7d8c94ff3fcc602841d98921c435581dd8a1e7c411"


/: (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:
139.58 M/s
ops over time/get:
652.93 M/s
ops over time/incr:
132.98 M/s
ops over time/push & pop:
94.80 M/s
ops over time/swap:
99.26 M/s
ops over time/xchg int:
165.84 M/s
time per op/cas int:
7.16 ns
time per op/get:
1.53 ns
time per op/incr:
7.52 ns
time per op/push & pop:
10.55 ns
time per op/swap:
10.07 ns
time per op/xchg int:
6.03 ns
Atomic incr:
ops over time/CAS, 1 domains:
135.98 M/s
ops over time/CAS, 2 domains:
35.64 M/s
ops over time/CAS, 4 domains:
18.11 M/s
ops over time/CAS, 8 domains:
5.03 M/s
ops over time/CAS with backoff, 1 domains:
137.08 M/s
ops over time/CAS with backoff, 2 domains:
131.22 M/s
ops over time/CAS with backoff, 4 domains:
122.07 M/s
ops over time/CAS with backoff, 8 domains:
85.66 M/s
ops over time/Incr, 1 domains:
138.51 M/s
ops over time/Incr, 2 domains:
56.51 M/s
ops over time/Incr, 4 domains:
46.35 M/s
ops over time/Incr, 8 domains:
24.39 M/s
time per op/CAS, 1 domains:
7.35 ns
time per op/CAS, 2 domains:
56.12 ns
time per op/CAS, 4 domains:
220.82 ns
time per op/CAS, 8 domains:
1590.80 ns
time per op/CAS with backoff, 1 domains:
7.29 ns
time per op/CAS with backoff, 2 domains:
15.24 ns
time per op/CAS with backoff, 4 domains:
32.77 ns
time per op/CAS with backoff, 8 domains:
93.39 ns
time per op/Incr, 1 domains:
7.22 ns
time per op/Incr, 2 domains:
35.39 ns
time per op/Incr, 4 domains:
86.30 ns
time per op/Incr, 8 domains:
328.06 ns
Bounded_q:
messages over time/1 adder, 1 taker:
14.41 M/s
messages over time/1 adder, 2 takers:
7.01 M/s
messages over time/1 adder, 4 takers:
6.27 M/s
messages over time/2 adders, 1 taker:
11.73 M/s
messages over time/2 adders, 2 takers:
8.67 M/s
messages over time/2 adders, 4 takers:
5.50 M/s
messages over time/4 adders, 1 taker:
8.80 M/s
messages over time/4 adders, 2 takers:
5.96 M/s
messages over time/4 adders, 4 takers:
3.42 M/s
messages over time/one domain:
17.90 M/s
time per message/1 adder, 1 taker:
138.81 ns
time per message/1 adder, 2 takers:
428.14 ns
time per message/1 adder, 4 takers:
797.11 ns
time per message/2 adders, 1 taker:
255.73 ns
time per message/2 adders, 2 takers:
461.13 ns
time per message/2 adders, 4 takers:
1090.03 ns
time per message/4 adders, 1 taker:
568.09 ns
time per message/4 adders, 2 takers:
1006.25 ns
time per message/4 adders, 4 takers:
2336.80 ns
time per message/one domain:
55.87 ns
Hashtbl:
operations over time/1 worker, 10% reads:
23.24 M/s
operations over time/1 worker, 50% reads:
22.50 M/s
operations over time/1 worker, 90% reads:
30.05 M/s
operations over time/2 workers, 10% reads:
9.09 M/s
operations over time/2 workers, 50% reads:
9.27 M/s
operations over time/2 workers, 90% reads:
12.92 M/s
operations over time/4 workers, 10% reads:
9.71 M/s
operations over time/4 workers, 50% reads:
9.76 M/s
operations over time/4 workers, 90% reads:
12.76 M/s
operations over time/8 workers, 10% reads:
5.66 M/s
operations over time/8 workers, 50% reads:
5.69 M/s
operations over time/8 workers, 90% reads:
7.32 M/s
operations over time/one domain, 10% reads:
36.47 M/s
operations over time/one domain, 50% reads:
35.96 M/s
operations over time/one domain, 90% reads:
52.48 M/s
time per operation/1 worker, 10% reads:
43.03 ns
time per operation/1 worker, 50% reads:
44.44 ns
time per operation/1 worker, 90% reads:
33.28 ns
time per operation/2 workers, 10% reads:
219.99 ns
time per operation/2 workers, 50% reads:
215.83 ns
time per operation/2 workers, 90% reads:
154.76 ns
time per operation/4 workers, 10% reads:
412.06 ns
time per operation/4 workers, 50% reads:
409.86 ns
time per operation/4 workers, 90% reads:
313.57 ns
time per operation/8 workers, 10% reads:
1414.54 ns
time per operation/8 workers, 50% reads:
1405.39 ns
time per operation/8 workers, 90% reads:
1092.57 ns
time per operation/one domain, 10% reads:
27.42 ns
time per operation/one domain, 50% reads:
27.81 ns
time per operation/one domain, 90% reads:
19.05 ns
Queue:
messages over time/one domain:
54.42 M/s
time per message/one domain:
18.38 ns
Ref with Mutex:
ops over time/cas int:
27.88 M/s
ops over time/get:
60.31 M/s
ops over time/incr:
56.32 M/s
ops over time/push & pop:
27.86 M/s
ops over time/swap:
55.64 M/s
ops over time/xchg int:
56.75 M/s
time per op/cas int:
35.86 ns
time per op/get:
16.58 ns
time per op/incr:
17.76 ns
time per op/push & pop:
35.89 ns
time per op/swap:
17.97 ns
time per op/xchg int:
17.62 ns
Ref with [@poll error]:
ops over time/cas int:
161.73 M/s
ops over time/get:
4368.40 M/s
ops over time/incr:
162.80 M/s
ops over time/push & pop:
100.27 M/s
ops over time/swap:
103.98 M/s
ops over time/xchg int:
156.72 M/s
time per op/cas int:
6.18 ns
time per op/get:
0.23 ns
time per op/incr:
6.14 ns
time per op/push & pop:
9.97 ns
time per op/swap:
9.62 ns
time per op/xchg int:
6.38 ns
Stack:
messages over time/one domain:
58.39 M/s
time per message/one domain:
17.12 ns
Unix:
blocking reads over time/1 worker:
2.87 M/s
blocking reads over time/2 workers:
4.57 M/s
blocking reads over time/4 workers:
3.10 M/s
time per blocking read/1 worker:
348.17 ns
time per blocking read/2 workers:
437.83 ns
time per blocking read/4 workers:
1290.30 ns
2026-02-13 12:04.29 ---> saved as "b1288409957e596c8b5aa917e271b650e7844f49e29a214fa3f174bb6434cdba"
Job succeeded
2026-02-13 12:04.34: Job succeeded