debian-13-5.4_arm64_opam-2.5

2026-02-19 08:53.23: New job: test ocaml-multicore/multicore-bench https://github.com/ocaml-multicore/multicore-bench.git#refs/heads/main (efb15d8562dbdc1ba976ffc574de028e3c11c123) (linux-arm64:debian-13-5.4_arm64_opam-2.5)
Base: ocaml/opam:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e
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:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e
# debian-13-5.4_arm64_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
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


2026-02-19 08:53.23: Using cache hint "ocaml-multicore/multicore-bench-ocaml/opam:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e-debian-13-5.4_arm64_opam-2.5-ca9771ecc62fd6bbba007243926da734"
2026-02-19 08:53.23: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e)
(comment debian-13-5.4_arm64_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(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"))
)


2026-02-19 08:53.23: Waiting for resource in pool OCluster
2026-02-19 08:55.44: Waiting for worker…
2026-02-19 09:11.59: Got resource from pool OCluster
Building on okypous.caelum.ci.dev
All commits already cached
HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll


(from ocaml/opam:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e' locally
docker.io/ocaml/opam@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e: Pulling from ocaml/opam
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Digest: sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e
Status: Downloaded newer image for ocaml/opam@sha256:515f91384679260c4d76d9346991a9270d017efc081cbcf7b65bf75ac0c6cd9e
2026-02-19 09:12.01 ---> using "724e50f554abe841332fd9ee9d83624f9592d1368cc4463ef3d546f6169aa36a" from cache


/: (comment debian-13-5.4_arm64_opam-2.5)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))
2026-02-19 09:12.03 ---> using "aa3224ffa912fe43af96143f4eb0413b717c2dd972635a9f54d4e269f7a502ce" 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
2026-02-19 09:12.03 ---> using "eee2c0f3ec9a311741a876f0dc227db2a4c2841a510506e4be3f0af545c9e32a" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-90-generic
The OCaml toplevel, version 5.4.0
2.5.0
2026-02-19 09:12.03 ---> using "9a0be1b07a7818d4a855398e1b66a120fa634d390c857b8966f10a05e63e2e8b" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-02-19 09:12.03 ---> using "a9f48187e484773581299270020fbba19342c8afca6591785f779c0aec4550a5" 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"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
340ee6fd1f..48176cb9e4  master     -> origin/master
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)
2026-02-19 09:12.03 ---> using "ccabf89609def9875e777c73280046c87d6afc9c50f83678e65a6d9653224632" from cache


/src: (copy (src multicore-bench.opam) (dst ./))
2026-02-19 09:12.20 ---> saved as "807f27afd6511b4bb861c3dfa264a34ccb5fa34038dd80a82b3c645c2906f68d"


/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)
2026-02-19 09:12.30 ---> saved as "bef484e13ce1eb23f01de0a1c1f5de95d0e920fcdf07df29c5bb5777a2490606"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-02-19 09:12.33 ---> saved as "2c31d431d0ac37dd9248179a077cb362cf3b10ce57f88a3826a00eba7c8b4bda"


/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/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian-security trixie-security/main arm64 Packages [110 kB]
- Fetched 201 kB in 0s (1256 kB/s)
- Reading package lists...
- 


<><> 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)
2026-02-19 09:12.46 ---> saved as "f2bc3c83330974b5ee4e31d3bb44c3cfa4fc4903a03d401e8452fabd15f49b48"


/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 csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved cmdliner.2.1.0  (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 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 result.1.5
-> installed backoff.0.1.1
-> installed thread-table.1.0.0
-> installed ocaml-version.4.0.3
-> installed camlp-streams.5.0.1
-> installed multicore-magic.2.3.2
-> 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)
2026-02-19 09:13.37 ---> saved as "0647d13b2145ba8220979ea47563a3fa8d5990f5ccc0414851e573b1455388fc"


/src: (copy (src .) (dst /src))
2026-02-19 09:13.37 ---> saved as "550290b0ff652c6fec7154c4d984bd3c4ee0b15d770ff7534e2c74792aafae00"


/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:
94.33 M/s
ops over time/get:
419.54 M/s
ops over time/incr:
93.39 M/s
ops over time/push & pop:
46.34 M/s
ops over time/swap:
52.81 M/s
ops over time/xchg int:
87.40 M/s
time per op/cas int:
10.60 ns
time per op/get:
2.38 ns
time per op/incr:
10.71 ns
time per op/push & pop:
21.58 ns
time per op/swap:
18.94 ns
time per op/xchg int:
11.44 ns
Atomic incr:
ops over time/CAS, 1 domains:
72.75 M/s
ops over time/CAS, 2 domains:
23.06 M/s
ops over time/CAS, 4 domains:
23.88 M/s
ops over time/CAS, 8 domains:
19.05 M/s
ops over time/CAS with backoff, 1 domains:
71.39 M/s
ops over time/CAS with backoff, 2 domains:
67.83 M/s
ops over time/CAS with backoff, 4 domains:
60.94 M/s
ops over time/CAS with backoff, 8 domains:
51.23 M/s
ops over time/Incr, 1 domains:
86.11 M/s
ops over time/Incr, 2 domains:
53.37 M/s
ops over time/Incr, 4 domains:
47.63 M/s
ops over time/Incr, 8 domains:
42.68 M/s
time per op/CAS, 1 domains:
13.75 ns
time per op/CAS, 2 domains:
86.73 ns
time per op/CAS, 4 domains:
167.51 ns
time per op/CAS, 8 domains:
419.92 ns
time per op/CAS with backoff, 1 domains:
14.01 ns
time per op/CAS with backoff, 2 domains:
29.49 ns
time per op/CAS with backoff, 4 domains:
65.64 ns
time per op/CAS with backoff, 8 domains:
156.17 ns
time per op/Incr, 1 domains:
11.61 ns
time per op/Incr, 2 domains:
37.48 ns
time per op/Incr, 4 domains:
83.98 ns
time per op/Incr, 8 domains:
187.44 ns
Bounded_q:
messages over time/1 adder, 1 taker:
1.28 M/s
messages over time/1 adder, 2 takers:
2.16 M/s
messages over time/1 adder, 4 takers:
1.49 M/s
messages over time/2 adders, 1 taker:
1.80 M/s
messages over time/2 adders, 2 takers:
1.60 M/s
messages over time/2 adders, 4 takers:
1.08 M/s
messages over time/4 adders, 1 taker:
2.00 M/s
messages over time/4 adders, 2 takers:
1.26 M/s
messages over time/4 adders, 4 takers:
1.04 M/s
messages over time/one domain:
9.37 M/s
time per message/1 adder, 1 taker:
1557.05 ns
time per message/1 adder, 2 takers:
1388.71 ns
time per message/1 adder, 4 takers:
3346.02 ns
time per message/2 adders, 1 taker:
1667.63 ns
time per message/2 adders, 2 takers:
2507.07 ns
time per message/2 adders, 4 takers:
5576.38 ns
time per message/4 adders, 1 taker:
2505.23 ns
time per message/4 adders, 2 takers:
4755.75 ns
time per message/4 adders, 4 takers:
7658.94 ns
time per message/one domain:
106.70 ns
Hashtbl:
operations over time/1 worker, 10% reads:
13.44 M/s
operations over time/1 worker, 50% reads:
14.87 M/s
operations over time/1 worker, 90% reads:
18.17 M/s
operations over time/2 workers, 10% reads:
2.58 M/s
operations over time/2 workers, 50% reads:
3.15 M/s
operations over time/2 workers, 90% reads:
4.82 M/s
operations over time/4 workers, 10% reads:
2.50 M/s
operations over time/4 workers, 50% reads:
2.78 M/s
operations over time/4 workers, 90% reads:
4.01 M/s
operations over time/8 workers, 10% reads:
2.10 M/s
operations over time/8 workers, 50% reads:
2.54 M/s
operations over time/8 workers, 90% reads:
3.50 M/s
operations over time/one domain, 10% reads:
24.06 M/s
operations over time/one domain, 50% reads:
26.04 M/s
operations over time/one domain, 90% reads:
38.06 M/s
time per operation/1 worker, 10% reads:
74.42 ns
time per operation/1 worker, 50% reads:
67.26 ns
time per operation/1 worker, 90% reads:
55.03 ns
time per operation/2 workers, 10% reads:
776.39 ns
time per operation/2 workers, 50% reads:
634.51 ns
time per operation/2 workers, 90% reads:
414.97 ns
time per operation/4 workers, 10% reads:
1601.55 ns
time per operation/4 workers, 50% reads:
1439.71 ns
time per operation/4 workers, 90% reads:
998.47 ns
time per operation/8 workers, 10% reads:
3802.82 ns
time per operation/8 workers, 50% reads:
3148.30 ns
time per operation/8 workers, 90% reads:
2285.89 ns
time per operation/one domain, 10% reads:
41.57 ns
time per operation/one domain, 50% reads:
38.41 ns
time per operation/one domain, 90% reads:
26.27 ns
Queue:
messages over time/one domain:
23.12 M/s
time per message/one domain:
43.25 ns
Ref with Mutex:
ops over time/cas int:
28.69 M/s
ops over time/get:
35.22 M/s
ops over time/incr:
33.28 M/s
ops over time/push & pop:
23.20 M/s
ops over time/swap:
16.87 M/s
ops over time/xchg int:
28.76 M/s
time per op/cas int:
34.85 ns
time per op/get:
28.40 ns
time per op/incr:
30.05 ns
time per op/push & pop:
43.10 ns
time per op/swap:
59.29 ns
time per op/xchg int:
34.77 ns
Ref with [@poll error]:
ops over time/cas int:
84.28 M/s
ops over time/get:
2620.69 M/s
ops over time/incr:
235.33 M/s
ops over time/push & pop:
67.02 M/s
ops over time/swap:
67.75 M/s
ops over time/xchg int:
92.84 M/s
time per op/cas int:
11.87 ns
time per op/get:
0.38 ns
time per op/incr:
4.25 ns
time per op/push & pop:
14.92 ns
time per op/swap:
14.76 ns
time per op/xchg int:
10.77 ns
Stack:
messages over time/one domain:
30.82 M/s
time per message/one domain:
32.44 ns
Unix:
blocking reads over time/1 worker:
2.49 M/s
blocking reads over time/2 workers:
5.02 M/s
blocking reads over time/4 workers:
10.06 M/s
time per blocking read/1 worker:
400.82 ns
time per blocking read/2 workers:
398.19 ns
time per blocking read/4 workers:
397.80 ns
2026-02-19 09:13.54 ---> saved as "f6a7f70fa6a22ae3ce9f77af8da30c6faf311e53fdb46f33ac33e0df4200be57"
Job succeeded
2026-02-19 09:14.01: Job succeeded