debian-13-5.4_s390x_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-s390x:debian-13-5.4_s390x_opam-2.5)
Base: ocaml/opam:debian-13-ocaml-5.4@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff
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@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff
# debian-13-5.4_s390x_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


2026-02-15 17:59.35: Using cache hint "ocaml-multicore/multicore-bench-ocaml/opam:debian-13-ocaml-5.4@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff-debian-13-5.4_s390x_opam-2.5-ca9771ecc62fd6bbba007243926da734"
2026-02-15 17:59.35: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff)
(comment debian-13-5.4_s390x_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"))
)


2026-02-15 17:59.35: Waiting for resource in pool OCluster
2026-02-15 21:45.41: Waiting for worker…
2026-02-16 03:39.53: Got resource from pool OCluster
Building on s390x-worker-01.marist.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@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff' locally
docker.io/ocaml/opam@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff: Pulling from ocaml/opam
Digest: sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff
Status: Downloaded newer image for ocaml/opam@sha256:589d4f3ba5a7bf1d647cdf132cd4bc6a583b4538d1b4334807c7b1da0d552fff
2026-02-16 03:39.53 ---> using "f46092bc7b56a9f31907b011f3c0d41957ea0f32efdd7a78133da055f1da0eb1" from cache


/: (comment debian-13-5.4_s390x_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"))
2026-02-16 03:39.53 ---> using "796333135c40977069543e99abb85c29e800da596929f223ef5a1172905ad9e3" 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
2026-02-16 03:39.53 ---> using "9740694339c4e30b7294aaae86f1fc1a5e16059525aa76017d6e84fdd5b42fcf" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-71-generic
The OCaml toplevel, version 5.4.0
2.5.0
2026-02-16 03:39.53 ---> using "6db426180fe5022ed54c9185f1b76dfa29c93d967854f1d8920d7cc6bbb46406" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-02-16 03:39.53 ---> using "1e075cff059ed7cbd40486a3a499a2497d882d8aaa72bce4e66670a863185008" 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..66fe1c299d  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)
2026-02-16 03:39.53 ---> using "87bb9085725a762782eab0d9f12a45df6309bcab73b5debae70afa984fae867b" from cache


/src: (copy (src multicore-bench.opam) (dst ./))
2026-02-16 03:39.54 ---> saved as "1271db52001fa0d499c8662af5aaf44abee0269d0d9b91d986a3c874fae98ac9"


/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)
2026-02-16 03:39.57 ---> saved as "363c03e32e8788dae4164dac782e54d31bef6af8f2ab7cbdfde90dcf3e1a85ab"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-02-16 03:39.58 ---> saved as "3084c794a70c7de0e5ca2f5161cd5be48aca3c4366d03700fb807a3b37195b14"


/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 s390x Packages [98.0 kB]
- Fetched 189 kB in 0s (922 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)
2026-02-16 03:40.10 ---> saved as "dc26d9f9b10ee1ed9b25328f3faa87295e590f10bc2948f59be956b9c633807f"


/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 ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (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 fmt.0.11.0
-> installed astring.0.8.5
-> installed mtime.2.1.0
-> installed logs.0.10.0
-> installed dune.3.21.1
-> installed backoff.0.1.1
-> installed camlp-streams.5.0.1
-> installed csexp.1.5.2
-> installed domain_shims.0.1.0
-> installed ocaml-version.4.0.3
-> installed multicore-magic.2.3.2
-> installed cppo.1.8.0
-> installed result.1.5
-> installed thread-table.1.0.0
-> 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)
2026-02-16 03:41.19 ---> saved as "08bedd1bd5d09df79357b3b3e0e6a7bfc7a5da40b4f272a73edb2bd7110da76f"


/src: (copy (src .) (dst /src))
2026-02-16 03:41.20 ---> saved as "0f4888cb11c6913e186aea8ff8e2d5027fe3a3988c8eddabda6ee5fe3c4589c9"


/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:
286.26 M/s
ops over time/get:
4012.55 M/s
ops over time/incr:
315.30 M/s
ops over time/push & pop:
100.94 M/s
ops over time/swap:
86.86 M/s
ops over time/xchg int:
288.05 M/s
time per op/cas int:
3.49 ns
time per op/get:
0.25 ns
time per op/incr:
3.17 ns
time per op/push & pop:
9.91 ns
time per op/swap:
11.51 ns
time per op/xchg int:
3.47 ns
Atomic incr:
ops over time/CAS, 1 domains:
271.53 M/s
ops over time/CAS, 2 domains:
171.58 M/s
ops over time/CAS, 4 domains:
41.37 M/s
ops over time/CAS with backoff, 1 domains:
228.58 M/s
ops over time/CAS with backoff, 2 domains:
164.52 M/s
ops over time/CAS with backoff, 4 domains:
25.72 M/s
ops over time/Incr, 1 domains:
256.51 M/s
ops over time/Incr, 2 domains:
215.00 M/s
ops over time/Incr, 4 domains:
212.37 M/s
time per op/CAS, 1 domains:
3.68 ns
time per op/CAS, 2 domains:
11.66 ns
time per op/CAS, 4 domains:
96.70 ns
time per op/CAS with backoff, 1 domains:
4.37 ns
time per op/CAS with backoff, 2 domains:
12.16 ns
time per op/CAS with backoff, 4 domains:
155.50 ns
time per op/Incr, 1 domains:
3.90 ns
time per op/Incr, 2 domains:
9.30 ns
time per op/Incr, 4 domains:
18.83 ns
Bounded_q:
messages over time/1 adder, 1 taker:
7.71 M/s
messages over time/1 adder, 2 takers:
5.48 M/s
messages over time/2 adders, 1 taker:
5.89 M/s
messages over time/2 adders, 2 takers:
4.91 M/s
messages over time/one domain:
13.40 M/s
time per message/1 adder, 1 taker:
259.29 ns
time per message/1 adder, 2 takers:
547.41 ns
time per message/2 adders, 1 taker:
509.59 ns
time per message/2 adders, 2 takers:
815.10 ns
time per message/one domain:
74.65 ns
Hashtbl:
operations over time/1 worker, 10% reads:
18.79 M/s
operations over time/1 worker, 50% reads:
6.59 M/s
operations over time/1 worker, 90% reads:
22.68 M/s
operations over time/2 workers, 10% reads:
7.68 M/s
operations over time/2 workers, 50% reads:
7.40 M/s
operations over time/2 workers, 90% reads:
11.74 M/s
operations over time/4 workers, 10% reads:
4.54 M/s
operations over time/4 workers, 50% reads:
9.90 M/s
operations over time/4 workers, 90% reads:
11.53 M/s
operations over time/8 workers, 10% reads:
3.64 M/s
operations over time/8 workers, 50% reads:
6.88 M/s
operations over time/8 workers, 90% reads:
7.84 M/s
operations over time/one domain, 10% reads:
26.34 M/s
operations over time/one domain, 50% reads:
25.70 M/s
operations over time/one domain, 90% reads:
25.69 M/s
time per operation/1 worker, 10% reads:
53.23 ns
time per operation/1 worker, 50% reads:
151.81 ns
time per operation/1 worker, 90% reads:
44.10 ns
time per operation/2 workers, 10% reads:
260.29 ns
time per operation/2 workers, 50% reads:
270.16 ns
time per operation/2 workers, 90% reads:
170.38 ns
time per operation/4 workers, 10% reads:
881.03 ns
time per operation/4 workers, 50% reads:
404.22 ns
time per operation/4 workers, 90% reads:
347.00 ns
time per operation/8 workers, 10% reads:
2198.82 ns
time per operation/8 workers, 50% reads:
1163.29 ns
time per operation/8 workers, 90% reads:
1021.05 ns
time per operation/one domain, 10% reads:
37.97 ns
time per operation/one domain, 50% reads:
38.91 ns
time per operation/one domain, 90% reads:
38.93 ns
Queue:
messages over time/one domain:
31.83 M/s
time per message/one domain:
31.41 ns
Ref with Mutex:
ops over time/cas int:
53.98 M/s
ops over time/get:
61.03 M/s
ops over time/incr:
60.04 M/s
ops over time/push & pop:
46.33 M/s
ops over time/swap:
52.09 M/s
ops over time/xchg int:
53.84 M/s
time per op/cas int:
18.53 ns
time per op/get:
16.39 ns
time per op/incr:
16.65 ns
time per op/push & pop:
21.59 ns
time per op/swap:
19.20 ns
time per op/xchg int:
18.57 ns
Ref with [@poll error]:
ops over time/cas int:
129.10 M/s
ops over time/get:
4027.61 M/s
ops over time/incr:
557.09 M/s
ops over time/push & pop:
57.45 M/s
ops over time/swap:
95.42 M/s
ops over time/xchg int:
109.96 M/s
time per op/cas int:
7.75 ns
time per op/get:
0.25 ns
time per op/incr:
1.80 ns
time per op/push & pop:
17.41 ns
time per op/swap:
10.48 ns
time per op/xchg int:
9.09 ns
Stack:
messages over time/one domain:
40.93 M/s
time per message/one domain:
24.43 ns
Unix:
blocking reads over time/1 worker:
4.71 M/s
blocking reads over time/2 workers:
8.17 M/s
blocking reads over time/4 workers:
9.41 M/s
time per blocking read/1 worker:
212.28 ns
time per blocking read/2 workers:
244.81 ns
time per blocking read/4 workers:
425.12 ns
2026-02-16 03:41.59 ---> saved as "de768e3de7694f2e05cac2b651ea363b857182cda7657cf5f7b6c573d52bd3e9"
Job succeeded
2026-02-16 03:41.59: Job succeeded