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:opensuse-16.0-4.14_opam-2.5) Base: ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24 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:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24 # opensuse-16.0-4.14_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-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.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 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:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24-opensuse-16.0-4.14_opam-2.5-3276ee940043c1e69634f204ac603fad" 2026-02-15 17:59.35: Using OBuilder spec: ((from ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24) (comment opensuse-16.0-4.14_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-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.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 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 19:07.43: Waiting for worker… 2026-02-15 19:12.57: Got resource from pool OCluster Building on clete All commits already cached HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll (from ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24) Unable to find image 'ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24' locally docker.io/ocaml/opam@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24: Pulling from ocaml/opam 64cfa2a65095: Already exists 692f5537ba42: Already exists 43d4ccad78cf: Already exists 70070cd3c955: Already exists ec78a4ac80e5: Already exists eefb9793fafd: Already exists 4c43fcde2d96: Already exists f8ebe3d69c53: Already exists 5701de31e7b4: Already exists 6f0d4e876bbd: Already exists 514a778e56ac: Already exists 6f18741b08bc: Already exists b55a7ea2c456: Already exists 2feb3e941e06: Already exists 653f3a3f03c4: Already exists c33d44c2fe4b: Already exists 4fea671b1885: Already exists b9f264b7c21f: Already exists 6d5265cd7803: Already exists 4f4fb700ef54: Already exists 7d8fef25b78c: Already exists 6b0aa9646d3b: Already exists 10db3a3b9be6: Already exists 2d2da8b6b9b7: Already exists 1ec924573b5f: Already exists 6073c773f2c4: Already exists bb3927dba7ec: Already exists 2fe1303967bb: Already exists 8f6ca5296dbb: Already exists a3cfb92e75bb: Already exists a8021b72a568: Already exists 1ec42febf652: Already exists a97cb0151adc: Already exists 49c1029be156: Already exists 89e146cf2a15: Already exists c205ee7826da: Already exists a1bc65435ed6: Already exists 42d855c8ca83: Already exists da6404631fa3: Pulling fs layer 47b2fa122fda: Pulling fs layer 7822984ee8ab: Pulling fs layer 424bc6dca278: Pulling fs layer 424bc6dca278: Waiting 47b2fa122fda: Verifying Checksum 47b2fa122fda: Download complete 7822984ee8ab: Download complete 424bc6dca278: Download complete da6404631fa3: Verifying Checksum da6404631fa3: Download complete da6404631fa3: Pull complete 47b2fa122fda: Pull complete 7822984ee8ab: Pull complete 424bc6dca278: Pull complete Digest: sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24 Status: Downloaded newer image for ocaml/opam@sha256:bc9402df5e62337a46a305774c8027b5065bdc70d2c2589b8ee8188136692f24 2026-02-15 19:12.57 ---> using "d24bdd8603442a0d7912975028b0ce88114965e0f6ed3b35a5a8333e7774aba7" from cache /: (comment opensuse-16.0-4.14_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")) 2026-02-15 19:12.57 ---> using "996ffe17ac4a10c9b2b821a4508e4e1e4518eb1960823fc421a8e661afa4309b" 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 [NOTE] The 'jobs' option was reset, its value was 255 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=255 --global Format upgrade done. <><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><> [default] Initialised 2026-02-15 19:12.57 ---> using "1d7b0a91902b43346c4e8ab2e9874d7471306deec503ec41fcc28264a4b1c2ab" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 6.8.0-90-generic The OCaml toplevel, version 4.14.2 2.5.0 2026-02-15 19:12.57 ---> using "f0ea699475bc3e945ddb203d11c27b5445c0ff5c6dd75e87dbc3cda5aa232632" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-02-15 19:12.57 ---> using "34be3f037acd9f856fc47e146277b81620ba69be0149e86caa6915f9a25d5af3" 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 Everything as up-to-date as possible (run with --verbose to show unavailable upgrades). However, you may "opam upgrade" these packages explicitly at these versions (e.g. "opam upgrade ocaml.5.4.0"), which will ask permission to downgrade or uninstall the conflicting packages. Nothing to do. # To update the current shell environment, run: eval $(opam env) 2026-02-15 19:12.57 ---> using "f635dec762c1439d34e5b3e8e44aafe55da5f07eaf1110147d65c475fe66eccc" from cache /src: (copy (src multicore-bench.opam) (dst ./)) 2026-02-15 19:12.57 ---> saved as "5f76e7e6bb9b74a081e502a0ce5cf45bbfe665c9331bcb478e50a61e1422eeed" /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 19:12.59 ---> saved as "2fdbb196b0242d8b953aa6d555b6cdcca38d122c2f5ecd9354d7cbd29d511df9" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-02-15 19:13.00 ---> saved as "83c813068dffdd3b9422d93f3991bfbe5110fbb1ff52f42be11bc92bc837caa7" /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.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.4.14.2 ocaml-base-compiler.4.14.2 ocaml-config.2 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 "zypper" "--non-interactive" "refresh" - Repository 'repo-openh264 (16.0)' is up to date. - Retrieving repository 'repo-oss (16.0)' metadata [.. - Looking for gpg keys in repository repo-oss (16.0). - gpgkey=http://cdn.opensuse.org/distribution/leap/16.0/repo/oss/x86_64/repodata/repomd.xml.key - .. - - Note: Received 1 new package signing key from repository "repo-oss (16.0)": - - Those additional keys are usually used to sign packages shipped by the repository. In order to - validate those packages upon download and installation the new keys will be imported into the rpm - database. - - New: - Key Fingerprint: F044 C2C5 07A1 262B 538A AADD 8A49 EB03 25DB 7AE0 - Key Name: openSUSE:Backports OBS Project <openSUSE:Backports@build.opensuse.org> - Key Algorithm: RSA 4096 - Key Created: Wed May 10 14:46:12 2023 - Key Expires: Sun May 9 14:46:12 2027 - Rpm Name: gpg-pubkey-25db7ae0-645bae34 - - The repository metadata introducing the new keys have been signed and validated by the trusted - key: - - Repository: repo-oss (16.0) - Key Fingerprint: AD48 5664 E901 B867 051A B15F 35A2 F86E 29B7 00A4 - Key Name: openSUSE Project Signing Key <opensuse@opensuse.org> - Key Algorithm: RSA 4096 - Key Created: Mon Jun 20 14:03:14 2022 - Key Expires: Fri Jun 19 14:03:14 2026 - Rpm Name: gpg-pubkey-29b700a4-62b07e22 - - . - . - .......... - .......... - ......... - .......... - .......... - .......... - ......done] - Building repository 'repo-oss (16.0)' cache [.. - ..done] - All repositories have been refreshed. <><> 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). # To update the current shell environment, run: eval $(opam env) 2026-02-15 19:13.40 ---> saved as "bb1e34deab1b79e1d2988b4b0ed276dc89be9c048b6cb347c7ef1c5d243a70ca" /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 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 cmdliner.2.1.0 (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 yojson.3.0.0 (cached) -> retrieved topkg.1.1.1 (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 csexp.1.5.2 -> installed camlp-streams.5.0.1 -> installed domain_shims.0.1.0 -> installed result.1.5 -> installed thread-table.1.0.0 -> installed backoff.0.1.1 -> installed ocaml-version.4.0.3 -> 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) 2026-02-15 19:15.21 ---> saved as "975dde7acbbb9fb1f1a02b7a3a15a5121a2d1cb8ab646c615ea1054550c0f4b4" /src: (copy (src .) (dst /src)) 2026-02-15 19:15.22 ---> saved as "b32e9ca5414dcc336aac4105120283ea1938a18b78253218c01c39936bc9eeb4" /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: 117.18 M/s ops over time/get: 1330.62 M/s ops over time/incr: 290.12 M/s ops over time/push & pop: 53.18 M/s ops over time/swap: 55.58 M/s ops over time/xchg int: 119.91 M/s time per op/cas int: 8.53 ns time per op/get: 0.75 ns time per op/incr: 3.45 ns time per op/push & pop: 18.80 ns time per op/swap: 17.99 ns time per op/xchg int: 8.34 ns Atomic incr: ops over time/CAS, 1 domains: 92.40 M/s ops over time/CAS with backoff, 1 domains: 90.44 M/s ops over time/Incr, 1 domains: 213.39 M/s time per op/CAS, 1 domains: 10.82 ns time per op/CAS with backoff, 1 domains: 11.06 ns time per op/Incr, 1 domains: 4.69 ns Bounded_q: messages over time/one domain: 6.21 M/s time per message/one domain: 161.22 ns Hashtbl: operations over time/1 worker, 10% reads: 6.48 M/s operations over time/1 worker, 50% reads: 6.95 M/s operations over time/1 worker, 90% reads: 6.64 M/s operations over time/2 workers, 10% reads: 6.45 M/s operations over time/2 workers, 50% reads: 6.62 M/s operations over time/2 workers, 90% reads: 7.77 M/s operations over time/4 workers, 10% reads: 6.37 M/s operations over time/4 workers, 50% reads: 6.70 M/s operations over time/4 workers, 90% reads: 7.05 M/s operations over time/8 workers, 10% reads: 6.09 M/s operations over time/8 workers, 50% reads: 5.91 M/s operations over time/8 workers, 90% reads: 7.39 M/s operations over time/one domain, 10% reads: 11.60 M/s operations over time/one domain, 50% reads: 11.65 M/s operations over time/one domain, 90% reads: 12.94 M/s time per operation/1 worker, 10% reads: 154.32 ns time per operation/1 worker, 50% reads: 143.95 ns time per operation/1 worker, 90% reads: 150.61 ns time per operation/2 workers, 10% reads: 309.91 ns time per operation/2 workers, 50% reads: 302.23 ns time per operation/2 workers, 90% reads: 257.38 ns time per operation/4 workers, 10% reads: 627.70 ns time per operation/4 workers, 50% reads: 597.31 ns time per operation/4 workers, 90% reads: 567.71 ns time per operation/8 workers, 10% reads: 1312.66 ns time per operation/8 workers, 50% reads: 1352.80 ns time per operation/8 workers, 90% reads: 1082.22 ns time per operation/one domain, 10% reads: 86.19 ns time per operation/one domain, 50% reads: 85.87 ns time per operation/one domain, 90% reads: 77.25 ns Queue: messages over time/one domain: 22.46 M/s time per message/one domain: 44.52 ns Ref with Mutex: ops over time/cas int: 18.58 M/s ops over time/get: 20.23 M/s ops over time/incr: 20.32 M/s ops over time/push & pop: 18.35 M/s ops over time/swap: 18.61 M/s ops over time/xchg int: 18.25 M/s time per op/cas int: 53.81 ns time per op/get: 49.43 ns time per op/incr: 49.21 ns time per op/push & pop: 54.51 ns time per op/swap: 53.74 ns time per op/xchg int: 54.80 ns Ref with [@poll error]: ops over time/cas int: 118.23 M/s ops over time/get: 1298.16 M/s ops over time/incr: 356.21 M/s ops over time/push & pop: 50.32 M/s ops over time/swap: 56.68 M/s ops over time/xchg int: 122.50 M/s time per op/cas int: 8.46 ns time per op/get: 0.77 ns time per op/incr: 2.81 ns time per op/push & pop: 19.87 ns time per op/swap: 17.64 ns time per op/xchg int: 8.16 ns Stack: messages over time/one domain: 24.02 M/s time per message/one domain: 41.64 ns Unix: blocking reads over time/1 worker: 0.33 M/s time per blocking read/1 worker: 3026.26 ns 2026-02-15 19:15.31 ---> saved as "bc3e0cafe07f30d3597d76a9014ebbb87277df1303cfe07150e0fb02d95f9ab5" Job succeeded 2026-02-15 19:15.31: Job succeeded