fedora-42-5.4_opam-2.5

2026-02-15 17:59.35: New job: test ocaml-multicore/multicore-bench https://github.com/ocaml-multicore/multicore-bench.git#refs/heads/main (efb15d8562dbdc1ba976ffc574de028e3c11c123) (linux-x86_64:fedora-42-5.4_opam-2.5)
Base: ocaml/opam:fedora-42-ocaml-5.4@sha256:af3807edfde31652769b5a5011b4c8f9109875ac6f7e4ae119331178ca647aa8
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 ocaml/opam:fedora-42-ocaml-5.4@sha256:af3807edfde31652769b5a5011b4c8f9109875ac6f7e4ae119331178ca647aa8
# fedora-42-5.4_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo dnf install -y findutils
RUN sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
WORKDIR /src
RUN sudo chown opam /src
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 ./
RUN opam pin add -yn multicore-bench.dev './'
RUN echo '(lang dune 3.0)' > './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 opam exec -- dune build @install @check @runtest && rm -rf _build


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


2026-02-15 17:59.35: Using cache hint "ocaml-multicore/multicore-bench-ocaml/opam:fedora-42-ocaml-5.4@sha256:af3807edfde31652769b5a5011b4c8f9109875ac6f7e4ae119331178ca647aa8-fedora-42-5.4_opam-2.5-ca9771ecc62fd6bbba007243926da734"
2026-02-15 17:59.35: Using OBuilder spec:
((from ocaml/opam:fedora-42-ocaml-5.4@sha256:af3807edfde31652769b5a5011b4c8f9109875ac6f7e4ae119331178ca647aa8)
(comment fedora-42-5.4_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (network host)
(shell "sudo dnf install -y findutils"))
(run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))
(run (shell "opam init --reinit -ni"))
(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
(workdir /src)
(run (shell "sudo chown opam /src"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(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 ./))
(run (network host)
(shell "opam pin add -yn multicore-bench.dev './'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './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 /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.5 --depext-only -y multicore-bench.dev $DEPS"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
(copy (src .) (dst /src))
(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
)


2026-02-15 17:59.35: Waiting for resource in pool OCluster
2026-02-15 18:00.15: Waiting for worker…
2026-02-15 18:03.28: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll


(from ocaml/opam:fedora-42-ocaml-5.4@sha256:af3807edfde31652769b5a5011b4c8f9109875ac6f7e4ae119331178ca647aa8)
2026-02-15 18:15.22 ---> using "df14cd90ce9bb00d2ec3452cc8c95f7005fb902611b52fd480ace2e03f802e87" from cache


/: (comment fedora-42-5.4_opam-2.5)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (network host)
(shell "sudo dnf install -y findutils"))
Updating and loading repositories:
Fedora 42 - x86_64 - Updates           100% | 118.4 KiB/s |  17.2 KiB |  00m00s
Repositories loaded.
Package "findutils-1:4.10.0-5.fc42.x86_64" is already installed.


Nothing to do.
2026-02-15 18:15.22 ---> using "2799ff75c9c61284d6f7a1f647ac37570b94a2b49ae88a2e1c73dfb1ea43194e" from cache


/src: (run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))
2026-02-15 18:15.22 ---> using "9c619b4adeab6fdd5544f88f84a4bb54a7c60a1fac8236cf05e09d18e183c65e" from cache


/src: (run (shell "opam init --reinit -ni"))
Configuring from /home/opam/.opamrc and then from 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 /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.


Continue? [Y/n] y
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-02-15 18:15.22 ---> using "7f98e5eebde2aa32373cdf2b56e35afa38478f841e32595058079a1009ca1ca0" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-87-generic
The OCaml toplevel, version 5.4.0
2.5.0
2026-02-15 18:15.22 ---> using "b84868788286afe3b7593c4c2a6c6b9b5f222bc8b625b8b73b5b9e58dd3950b3" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-02-15 18:15.22 ---> using "c4b52acd1f2460cd9cdca02c90025ed2e9060a6f6453d01bb3ae0fbb36481c69" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(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"))
302e116c40 Merge pull request #29374 from shonfeder/release-dune-3.21.1


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


Already up-to-date.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2026-02-15 18:15.22 ---> using "f065daedf11f717b36f69fae0e610a8b0b10aff4d54e74377732fb0fd32b5462" from cache


/src: (copy (src multicore-bench.opam) (dst ./))
2026-02-15 18:15.22 ---> saved as "4bb22e0b2f0d80b2ef131c6ff3632543245bc5e622d912e38407c5f094823b9b"


/src: (run (network host)
(shell "opam pin add -yn multicore-bench.dev './'"))
[multicore-bench.dev] synchronised (file:///src)
multicore-bench is now pinned to file:///src (version dev)
2026-02-15 18:15.23 ---> saved as "86a6c8f8e8e4ef230a892dc6996f41ff8908242def1d75db87347293376f18df"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-02-15 18:15.23 ---> saved as "8c46b81907f55c6f3768165963a7df339446dbab7d39f0b807ede1b12daaac8b"


/src: (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")


/src: (env CI true)


/src: (env OCAMLCI true)


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.5 --depext-only -y multicore-bench.dev $DEPS"))
+ /usr/sbin/sudo "yum" "makecache"
- Updating and loading repositories:
- Repositories loaded.
- Metadata cache created.


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[multicore-bench.dev] synchronised (file:///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)
2026-02-15 18:15.30 ---> saved as "37292d70076585c28bbaedf2570fedb56f30aec803fbb105c9fafbe7d01c5022"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(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 astring.0.8.5  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain_shims.0.1.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved logs.0.10.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved mdx.2.5.1  (cached)
-> retrieved multicore-magic.2.3.2  (cached)
-> retrieved ocaml-version.4.0.3  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved re.1.14.0  (cached)
-> retrieved result.1.5  (cached)
-> retrieved thread-table.1.0.0  (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 ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> 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 thread-table.1.0.0
-> installed result.1.5
-> installed multicore-magic.2.3.2
-> installed ocaml-version.4.0.3
-> installed camlp-streams.5.0.1
-> installed domain-local-await.1.0.1
-> installed cppo.1.8.0
-> 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)
2026-02-15 18:16.05 ---> saved as "721836115fde536b4d6455dddca1dc0f0bc846f01af176cea2196be761764ec1"


/src: (copy (src .) (dst /src))
2026-02-15 18:16.05 ---> saved as "96c328ee6f61eb9ee0cd4797e5bb2cef67611def2235f160ff79035c26250b8a"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
(cd _build/default/bench && ./main.exe -brief)
Atomic:
ops over time/cas int:
177.24 M/s
ops over time/get:
2539.70 M/s
ops over time/incr:
158.62 M/s
ops over time/push & pop:
65.51 M/s
ops over time/swap:
123.87 M/s
ops over time/xchg int:
176.49 M/s
time per op/cas int:
5.64 ns
time per op/get:
0.39 ns
time per op/incr:
6.30 ns
time per op/push & pop:
15.26 ns
time per op/swap:
8.07 ns
time per op/xchg int:
5.67 ns
Atomic incr:
ops over time/CAS, 1 domains:
127.94 M/s
ops over time/CAS, 2 domains:
55.60 M/s
ops over time/CAS, 4 domains:
32.03 M/s
ops over time/CAS, 8 domains:
39.97 M/s
ops over time/CAS with backoff, 1 domains:
128.87 M/s
ops over time/CAS with backoff, 2 domains:
71.09 M/s
ops over time/CAS with backoff, 4 domains:
41.58 M/s
ops over time/CAS with backoff, 8 domains:
31.06 M/s
ops over time/Incr, 1 domains:
139.25 M/s
ops over time/Incr, 2 domains:
127.36 M/s
ops over time/Incr, 4 domains:
72.76 M/s
ops over time/Incr, 8 domains:
66.38 M/s
time per op/CAS, 1 domains:
7.82 ns
time per op/CAS, 2 domains:
35.97 ns
time per op/CAS, 4 domains:
124.89 ns
time per op/CAS, 8 domains:
200.15 ns
time per op/CAS with backoff, 1 domains:
7.76 ns
time per op/CAS with backoff, 2 domains:
28.13 ns
time per op/CAS with backoff, 4 domains:
96.20 ns
time per op/CAS with backoff, 8 domains:
257.53 ns
time per op/Incr, 1 domains:
7.18 ns
time per op/Incr, 2 domains:
15.70 ns
time per op/Incr, 4 domains:
54.98 ns
time per op/Incr, 8 domains:
120.51 ns
Bounded_q:
messages over time/1 adder, 1 taker:
4.13 M/s
messages over time/1 adder, 2 takers:
3.35 M/s
messages over time/1 adder, 4 takers:
2.04 M/s
messages over time/2 adders, 1 taker:
3.49 M/s
messages over time/2 adders, 2 takers:
2.49 M/s
messages over time/2 adders, 4 takers:
1.56 M/s
messages over time/4 adders, 1 taker:
2.52 M/s
messages over time/4 adders, 2 takers:
2.07 M/s
messages over time/4 adders, 4 takers:
1.26 M/s
messages over time/one domain:
9.84 M/s
time per message/1 adder, 1 taker:
484.05 ns
time per message/1 adder, 2 takers:
894.79 ns
time per message/1 adder, 4 takers:
2446.30 ns
time per message/2 adders, 1 taker:
858.56 ns
time per message/2 adders, 2 takers:
1606.76 ns
time per message/2 adders, 4 takers:
3844.78 ns
time per message/4 adders, 1 taker:
1987.05 ns
time per message/4 adders, 2 takers:
2897.61 ns
time per message/4 adders, 4 takers:
6348.94 ns
time per message/one domain:
101.65 ns
Hashtbl:
operations over time/1 worker, 10% reads:
17.38 M/s
operations over time/1 worker, 50% reads:
17.00 M/s
operations over time/1 worker, 90% reads:
18.26 M/s
operations over time/2 workers, 10% reads:
2.42 M/s
operations over time/2 workers, 50% reads:
3.18 M/s
operations over time/2 workers, 90% reads:
3.46 M/s
operations over time/4 workers, 10% reads:
1.10 M/s
operations over time/4 workers, 50% reads:
1.78 M/s
operations over time/4 workers, 90% reads:
3.02 M/s
operations over time/8 workers, 10% reads:
0.98 M/s
operations over time/8 workers, 50% reads:
1.23 M/s
operations over time/8 workers, 90% reads:
2.27 M/s
operations over time/one domain, 10% reads:
23.66 M/s
operations over time/one domain, 50% reads:
20.28 M/s
operations over time/one domain, 90% reads:
30.80 M/s
time per operation/1 worker, 10% reads:
57.54 ns
time per operation/1 worker, 50% reads:
58.82 ns
time per operation/1 worker, 90% reads:
54.77 ns
time per operation/2 workers, 10% reads:
827.17 ns
time per operation/2 workers, 50% reads:
629.31 ns
time per operation/2 workers, 90% reads:
577.88 ns
time per operation/4 workers, 10% reads:
3637.15 ns
time per operation/4 workers, 50% reads:
2249.51 ns
time per operation/4 workers, 90% reads:
1326.43 ns
time per operation/8 workers, 10% reads:
8168.21 ns
time per operation/8 workers, 50% reads:
6497.89 ns
time per operation/8 workers, 90% reads:
3525.14 ns
time per operation/one domain, 10% reads:
42.27 ns
time per operation/one domain, 50% reads:
49.32 ns
time per operation/one domain, 90% reads:
32.46 ns
Queue:
messages over time/one domain:
38.01 M/s
time per message/one domain:
26.31 ns
Ref with Mutex:
ops over time/cas int:
48.87 M/s
ops over time/get:
57.57 M/s
ops over time/incr:
57.96 M/s
ops over time/push & pop:
33.68 M/s
ops over time/swap:
47.37 M/s
ops over time/xchg int:
48.01 M/s
time per op/cas int:
20.46 ns
time per op/get:
17.37 ns
time per op/incr:
17.25 ns
time per op/push & pop:
29.69 ns
time per op/swap:
21.11 ns
time per op/xchg int:
20.83 ns
Ref with [@poll error]:
ops over time/cas int:
184.40 M/s
ops over time/get:
1745.42 M/s
ops over time/incr:
387.32 M/s
ops over time/push & pop:
41.64 M/s
ops over time/swap:
113.46 M/s
ops over time/xchg int:
259.97 M/s
time per op/cas int:
5.42 ns
time per op/get:
0.57 ns
time per op/incr:
2.58 ns
time per op/push & pop:
24.02 ns
time per op/swap:
8.81 ns
time per op/xchg int:
3.85 ns
Stack:
messages over time/one domain:
31.82 M/s
time per message/one domain:
31.43 ns
Unix:
blocking reads over time/1 worker:
1.41 M/s
blocking reads over time/2 workers:
2.86 M/s
blocking reads over time/4 workers:
5.67 M/s
time per blocking read/1 worker:
710.90 ns
time per blocking read/2 workers:
698.34 ns
time per blocking read/4 workers:
705.85 ns
2026-02-15 18:16.19 ---> saved as "79b04c45078091c3ac2c5957093d34ede45f0449cbcd9547feebebce0990b11e"
Job succeeded
2026-02-15 18:16.19: Job succeeded