debian-12-4.14_ppc64_opam-2.3

2025-06-12 14:21.29: New job: test ocaml-multicore/multicore-bench https://github.com/ocaml-multicore/multicore-bench.git#refs/heads/main (d2dcd9f17eb27ef2e967e6e40389827f80fd9514) (linux-ppc64:debian-12-4.14_ppc64_opam-2.3)
Base: ocaml/opam:debian-12-ocaml-4.14@sha256:8b9c0ee6fe529603c97fea52b0f264babe30c5958adc0fd2d6ccbe365d0fc744
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 d2dcd9f1
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.14@sha256:8b9c0ee6fe529603c97fea52b0f264babe30c5958adc0fd2d6ccbe365d0fc744
# debian-12-4.14_ppc64_opam-2.3
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.3 /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 a28eb8a148feb4fbc6466fa0791668993513dbde || git fetch origin master) && git reset -q --hard a28eb8a148feb4fbc6466fa0791668993513dbde && 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-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.19.1 fmt.0.10.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.12.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.0.8 yojson.3.0.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.3 --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


2025-06-12 14:21.29: Using cache hint "ocaml-multicore/multicore-bench-ocaml/opam:debian-12-ocaml-4.14@sha256:8b9c0ee6fe529603c97fea52b0f264babe30c5958adc0fd2d6ccbe365d0fc744-debian-12-4.14_ppc64_opam-2.3-5e4c8ffe3a82688c609d0a76996fa04b"
2025-06-12 14:21.29: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.14@sha256:8b9c0ee6fe529603c97fea52b0f264babe30c5958adc0fd2d6ccbe365d0fc744)
(comment debian-12-4.14_ppc64_opam-2.3)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (shell "sudo ln -f /usr/bin/opam-2.3 /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 a28eb8a148feb4fbc6466fa0791668993513dbde || git fetch origin master) && git reset -q --hard a28eb8a148feb4fbc6466fa0791668993513dbde && 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-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.19.1 fmt.0.10.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.12.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.0.8 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=2.3 --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"))
)


2025-06-12 14:21.29: Waiting for resource in pool OCluster
2025-06-12 14:57.11: Waiting for worker…
2025-06-12 15:07.55: Got resource from pool OCluster
Building on orithia.caelum.ci.dev
All commits already cached
HEAD is now at d2dcd9f Try to avoid false sharing


(from ocaml/opam:debian-12-ocaml-4.14@sha256:8b9c0ee6fe529603c97fea52b0f264babe30c5958adc0fd2d6ccbe365d0fc744)
2025-06-12 15:07.56 ---> using "94507078dbcad988175abac8e1eba426ff5f5d396859d1f53ee7ff41d411499f" from cache


/: (comment debian-12-4.14_ppc64_opam-2.3)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-06-12 15:07.56 ---> using "61bfae97119427a3beb7ffc1b8033d0979b5f7af7a512eedf2a03664e71e9ce8" 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 development 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
2025-06-12 15:07.56 ---> using "ec19f34f3a4e0cb68290c0f88054d88032b47ef7191b8407bd9f0b29f1d2e382" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-60-generic
The OCaml toplevel, version 4.14.2
2.3.0
2025-06-12 15:07.56 ---> using "d178e1cb8c6c35f3b5e5b6925b201ba09629c2f7975a3e188b57f2d564d4b4b0" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2025-06-12 15:07.56 ---> using "cec3b0fef38d63399b882733f41ead6362d710c8bf6ec25e3e647949684b723f" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e a28eb8a148feb4fbc6466fa0791668993513dbde || git fetch origin master) && git reset -q --hard a28eb8a148feb4fbc6466fa0791668993513dbde && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
0d013e603b..a28eb8a148  master     -> origin/master
a28eb8a148 Merge pull request #28017 from maiste/release-dune-3.19.1


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


Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).
However, you may "opam upgrade" these packages explicitly, which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-06-12 15:07.56 ---> using "49a0a33bc15b90608c9dd36d9fb685194059560d1018e1da1f2f7816c12979a2" from cache


/src: (copy (src multicore-bench.opam) (dst ./))
2025-06-12 15:07.56 ---> saved as "7ef06613e96b0da0130ad0d3b06ce6bad70c222dfe91a81a54653db93ff195d4"


/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)
2025-06-12 15:07.58 ---> saved as "d7fd0c62824046d2f7986047eeeb6e19375eea117f4f66578da06b9067968926"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-06-12 15:07.58 ---> saved as "562d55369039bc869b6af7f112e8ed620df963ce06051e28ce4fa5949ce36a1e"


/src: (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.1.3.0 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain_shims.0.1.0 dune.3.19.1 fmt.0.10.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 ocaml-options-vanilla.1 ocaml-version.4.0.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 re.1.12.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.0.8 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=2.3 --depext-only -y multicore-bench.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian bookworm InRelease [151 kB]
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian bookworm/main ppc64el Packages [8629 kB]
- Get:5 http://deb.debian.org/debian-security bookworm-security/main ppc64el Packages [253 kB]
- Fetched 9137 kB in 2s (4116 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 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).
2025-06-12 15:08.20 ---> saved as "7a0ab3a00490fc835510f12f6d95c570cfd4d8f153c3ac365f8ac5a57fb75fd5"


/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 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 23 packages
- install astring            0.8.5
- install backoff            0.1.1
- install camlp-streams      5.0.1
- install cmdliner           1.3.0
- 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               3.19.1
- install fmt                0.10.0
- install logs               0.8.0
- install mdx                2.5.0
- install mtime              2.1.0
- install multicore-magic    2.3.1
- install ocaml-version      4.0.1
- install ocamlbuild         0.16.1
- install ocamlfind          1.9.8
- install re                 1.12.0
- install result             1.5
- install seq                base
- install thread-table       1.0.0
- install topkg              1.0.8
- install yojson             3.0.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved backoff.0.1.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain_shims.0.1.0  (cached)
-> retrieved fmt.0.10.0  (cached)
-> retrieved logs.0.8.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.1  (cached)
-> retrieved mdx.2.5.0  (cached)
-> retrieved ocaml-version.4.0.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved re.1.12.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved result.1.5  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved dune.3.19.1  (cached)
-> retrieved topkg.1.0.8  (cached)
-> retrieved yojson.3.0.0  (cached)
-> installed cmdliner.1.3.0
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed topkg.1.0.8
-> installed fmt.0.10.0
-> installed mtime.2.1.0
-> installed astring.0.8.5
-> installed logs.0.8.0
-> installed dune.3.19.1
-> installed domain_shims.0.1.0
-> installed csexp.1.5.2
-> installed thread-table.1.0.0
-> installed result.1.5
-> installed backoff.0.1.1
-> installed multicore-magic.2.3.1
-> installed ocaml-version.4.0.1
-> installed camlp-streams.5.0.1
-> installed domain-local-await.1.0.1
-> installed re.1.12.0
-> installed cppo.1.8.0
-> installed yojson.3.0.0
-> installed mdx.2.5.0
Done.
# To update the current shell environment, run: eval $(opam env)
2025-06-12 15:09.27 ---> saved as "1a722de27ff9c0daffa62c169c3dadfc8d38b23e817989b7690727b9ba90abef"


/src: (copy (src .) (dst /src))
2025-06-12 15:09.27 ---> saved as "b180533d71d096c9a4c2ea1b55c72f9ca59fb68fcd6f941f91902b52f7438439"


/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:
71.07 M/s
ops over time/get:
303.73 M/s
ops over time/incr:
109.68 M/s
ops over time/push & pop:
51.71 M/s
ops over time/swap:
46.34 M/s
ops over time/xchg int:
71.24 M/s
time per op/cas int:
14.07 ns
time per op/get:
3.29 ns
time per op/incr:
9.12 ns
time per op/push & pop:
19.34 ns
time per op/swap:
21.58 ns
time per op/xchg int:
14.04 ns
Atomic incr:
ops over time/CAS, 1 domains:
115.82 M/s
ops over time/CAS with backoff, 1 domains:
120.55 M/s
ops over time/Incr, 1 domains:
175.77 M/s
time per op/CAS, 1 domains:
8.63 ns
time per op/CAS with backoff, 1 domains:
8.30 ns
time per op/Incr, 1 domains:
5.69 ns
Bounded_q:
messages over time/one domain:
6.97 M/s
time per message/one domain:
143.39 ns
Hashtbl:
operations over time/1 worker, 10% reads:
9.08 M/s
operations over time/1 worker, 50% reads:
5.94 M/s
operations over time/1 worker, 90% reads:
6.39 M/s
operations over time/2 workers, 10% reads:
5.29 M/s
operations over time/2 workers, 50% reads:
5.26 M/s
operations over time/2 workers, 90% reads:
10.92 M/s
operations over time/4 workers, 10% reads:
5.62 M/s
operations over time/4 workers, 50% reads:
5.90 M/s
operations over time/4 workers, 90% reads:
11.32 M/s
operations over time/8 workers, 10% reads:
5.54 M/s
operations over time/8 workers, 50% reads:
6.65 M/s
operations over time/8 workers, 90% reads:
11.03 M/s
operations over time/one domain, 10% reads:
11.54 M/s
operations over time/one domain, 50% reads:
15.54 M/s
operations over time/one domain, 90% reads:
19.88 M/s
time per operation/1 worker, 10% reads:
110.09 ns
time per operation/1 worker, 50% reads:
168.37 ns
time per operation/1 worker, 90% reads:
156.49 ns
time per operation/2 workers, 10% reads:
378.26 ns
time per operation/2 workers, 50% reads:
380.46 ns
time per operation/2 workers, 90% reads:
183.24 ns
time per operation/4 workers, 10% reads:
712.36 ns
time per operation/4 workers, 50% reads:
678.08 ns
time per operation/4 workers, 90% reads:
353.20 ns
time per operation/8 workers, 10% reads:
1444.54 ns
time per operation/8 workers, 50% reads:
1202.99 ns
time per operation/8 workers, 90% reads:
725.58 ns
time per operation/one domain, 10% reads:
86.66 ns
time per operation/one domain, 50% reads:
64.37 ns
time per operation/one domain, 90% reads:
50.31 ns
Queue:
messages over time/one domain:
25.07 M/s
time per message/one domain:
39.88 ns
Ref with Mutex:
ops over time/cas int:
6.54 M/s
ops over time/get:
12.04 M/s
ops over time/incr:
11.26 M/s
ops over time/push & pop:
6.06 M/s
ops over time/swap:
10.53 M/s
ops over time/xchg int:
10.89 M/s
time per op/cas int:
152.96 ns
time per op/get:
83.11 ns
time per op/incr:
88.79 ns
time per op/push & pop:
165.01 ns
time per op/swap:
94.99 ns
time per op/xchg int:
91.84 ns
Ref with [@poll error]:
ops over time/cas int:
94.27 M/s
ops over time/get:
324.75 M/s
ops over time/incr:
205.32 M/s
ops over time/push & pop:
56.98 M/s
ops over time/swap:
52.30 M/s
ops over time/xchg int:
110.93 M/s
time per op/cas int:
10.61 ns
time per op/get:
3.08 ns
time per op/incr:
4.87 ns
time per op/push & pop:
17.55 ns
time per op/swap:
19.12 ns
time per op/xchg int:
9.01 ns
Stack:
messages over time/one domain:
27.59 M/s
time per message/one domain:
36.25 ns
Unix:
blocking reads over time/1 worker:
0.20 M/s
time per blocking read/1 worker:
4889.49 ns
2025-06-12 15:09.36 ---> saved as "de53879457a5434f3be1c1a13cbe1fb46ee41dfb405ea76ab6699b63375eaa63"
Job succeeded
2025-06-12 15:09.37: Job succeeded