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-15.6-5.4_opam-2.5) Base: ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:effc88b5c29636e2a2c6cb1098771062d091bda2846d151c20cf377b7e7f4041 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-15.6-ocaml-5.4@sha256:effc88b5c29636e2a2c6cb1098771062d091bda2846d151c20cf377b7e7f4041 # opensuse-15.6-5.4_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:opensuse-15.6-ocaml-5.4@sha256:effc88b5c29636e2a2c6cb1098771062d091bda2846d151c20cf377b7e7f4041-opensuse-15.6-5.4_opam-2.5-ca9771ecc62fd6bbba007243926da734" 2026-02-15 17:59.35: Using OBuilder spec: ((from ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:effc88b5c29636e2a2c6cb1098771062d091bda2846d151c20cf377b7e7f4041) (comment opensuse-15.6-5.4_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 19:07.44: Waiting for worker… 2026-02-15 19:12.59: 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:opensuse-15.6-ocaml-5.4@sha256:effc88b5c29636e2a2c6cb1098771062d091bda2846d151c20cf377b7e7f4041) 2026-02-15 19:12.59 ---> using "ef7fcc773164a50ac7c6190f2fe405e5d17bf12eddb2fc6cbe71b9e48747f47a" from cache /: (comment opensuse-15.6-5.4_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 19:12.59 ---> using "de099de23ed215e5aa934a37013d9d90f80af6c95f1126a36c1dafd3f0c2771a" 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 19:12.59 ---> using "e4567fea59e9f89f28721481af1347ec0e49e166b623b782f9469b741d323d8a" 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 19:12.59 ---> using "ca5e94ca25f331100bb4ff662a4a576c2a692e3deb6b97773656fd20c750ac37" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-02-15 19:12.59 ---> using "a18645d69895a2ac0663dd277250036df2b7d0221e78508f58b24710dd49f470" 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 19:12.59 ---> using "748e442f8d388112949bfdb629a9b5b5d36c6206ec2bed974128b1cbc4fecb66" from cache /src: (copy (src multicore-bench.opam) (dst ./)) 2026-02-15 19:12.59 ---> saved as "b80b9c64bc7904db22302e94b74dc1884aeac5dcf0e0bea90bf91f1956860354" /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 19:13.00 ---> saved as "bb75590eecd714ac4da76a8c3f65178503900605a70b9496c075a6888971b4c8" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-02-15 19:13.00 ---> saved as "03c2a861943987b41523fb761358d5453d992af2848106540d4b5e61994e96b6" /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 "zypper" "--non-interactive" "refresh" - Repository 'Update repository of openSUSE Backports' is up to date. - Repository 'Update repository with updates from SUSE Linux Enterprise 15' is up to date. - Repository 'Main Update Repository' is up to date. - Repository 'Update Repository (Non-Oss)' is up to date. - Repository 'Non-OSS Repository' is up to date. - Repository 'Main Repository' is up to date. - 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 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 19:13.08 ---> saved as "70d98ff463ae15b71625f968e5e5e7919760c14110bca83e111bb4c99b684a5a" /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 fmt.0.11.0 -> installed mtime.2.1.0 -> 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 thread-table.1.0.0 -> installed backoff.0.1.1 -> installed ocaml-version.4.0.3 -> installed multicore-magic.2.3.2 -> 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 19:13.41 ---> saved as "61b2a209e44b478f44c44a8cd1762a7aff6466ec84ce1a6d8cd749cb2c82e758" /src: (copy (src .) (dst /src)) 2026-02-15 19:13.42 ---> saved as "6dc0bf57664609ada8183b970564068c323c9799a2e3d0d7c09a7be1b842c6d5" /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: 159.93 M/s ops over time/get: 2653.52 M/s ops over time/incr: 159.61 M/s ops over time/push & pop: 99.53 M/s ops over time/swap: 136.01 M/s ops over time/xchg int: 163.61 M/s time per op/cas int: 6.25 ns time per op/get: 0.38 ns time per op/incr: 6.27 ns time per op/push & pop: 10.05 ns time per op/swap: 7.35 ns time per op/xchg int: 6.11 ns Atomic incr: ops over time/CAS, 1 domains: 156.40 M/s ops over time/CAS, 2 domains: 61.16 M/s ops over time/CAS, 4 domains: 62.80 M/s ops over time/CAS, 8 domains: 61.40 M/s ops over time/CAS with backoff, 1 domains: 156.24 M/s ops over time/CAS with backoff, 2 domains: 72.71 M/s ops over time/CAS with backoff, 4 domains: 47.82 M/s ops over time/CAS with backoff, 8 domains: 34.71 M/s ops over time/Incr, 1 domains: 149.41 M/s ops over time/Incr, 2 domains: 71.43 M/s ops over time/Incr, 4 domains: 70.92 M/s ops over time/Incr, 8 domains: 88.89 M/s time per op/CAS, 1 domains: 6.39 ns time per op/CAS, 2 domains: 32.70 ns time per op/CAS, 4 domains: 63.70 ns time per op/CAS, 8 domains: 130.29 ns time per op/CAS with backoff, 1 domains: 6.40 ns time per op/CAS with backoff, 2 domains: 27.51 ns time per op/CAS with backoff, 4 domains: 83.65 ns time per op/CAS with backoff, 8 domains: 230.51 ns time per op/Incr, 1 domains: 6.69 ns time per op/Incr, 2 domains: 28.00 ns time per op/Incr, 4 domains: 56.40 ns time per op/Incr, 8 domains: 90.00 ns Bounded_q: messages over time/1 adder, 1 taker: 6.39 M/s messages over time/1 adder, 2 takers: 2.47 M/s messages over time/1 adder, 4 takers: 2.18 M/s messages over time/2 adders, 1 taker: 3.71 M/s messages over time/2 adders, 2 takers: 2.21 M/s messages over time/2 adders, 4 takers: 1.59 M/s messages over time/4 adders, 1 taker: 1.37 M/s messages over time/4 adders, 2 takers: 1.70 M/s messages over time/4 adders, 4 takers: 1.43 M/s messages over time/one domain: 13.36 M/s time per message/1 adder, 1 taker: 312.76 ns time per message/1 adder, 2 takers: 1215.07 ns time per message/1 adder, 4 takers: 2290.00 ns time per message/2 adders, 1 taker: 808.54 ns time per message/2 adders, 2 takers: 1807.12 ns time per message/2 adders, 4 takers: 3767.22 ns time per message/4 adders, 1 taker: 3650.35 ns time per message/4 adders, 2 takers: 3527.56 ns time per message/4 adders, 4 takers: 5581.42 ns time per message/one domain: 74.87 ns Hashtbl: operations over time/1 worker, 10% reads: 16.87 M/s operations over time/1 worker, 50% reads: 15.75 M/s operations over time/1 worker, 90% reads: 18.60 M/s operations over time/2 workers, 10% reads: 1.82 M/s operations over time/2 workers, 50% reads: 2.46 M/s operations over time/2 workers, 90% reads: 6.94 M/s operations over time/4 workers, 10% reads: 1.09 M/s operations over time/4 workers, 50% reads: 1.96 M/s operations over time/4 workers, 90% reads: 3.77 M/s operations over time/8 workers, 10% reads: 0.94 M/s operations over time/8 workers, 50% reads: 1.90 M/s operations over time/8 workers, 90% reads: 3.49 M/s operations over time/one domain, 10% reads: 23.24 M/s operations over time/one domain, 50% reads: 22.71 M/s operations over time/one domain, 90% reads: 31.54 M/s time per operation/1 worker, 10% reads: 59.27 ns time per operation/1 worker, 50% reads: 63.49 ns time per operation/1 worker, 90% reads: 53.75 ns time per operation/2 workers, 10% reads: 1097.03 ns time per operation/2 workers, 50% reads: 812.31 ns time per operation/2 workers, 90% reads: 288.08 ns time per operation/4 workers, 10% reads: 3660.79 ns time per operation/4 workers, 50% reads: 2041.52 ns time per operation/4 workers, 90% reads: 1061.96 ns time per operation/8 workers, 10% reads: 8481.74 ns time per operation/8 workers, 50% reads: 4206.49 ns time per operation/8 workers, 90% reads: 2289.78 ns time per operation/one domain, 10% reads: 43.03 ns time per operation/one domain, 50% reads: 44.03 ns time per operation/one domain, 90% reads: 31.71 ns Queue: messages over time/one domain: 38.16 M/s time per message/one domain: 26.21 ns Ref with Mutex: ops over time/cas int: 41.04 M/s ops over time/get: 39.05 M/s ops over time/incr: 46.04 M/s ops over time/push & pop: 31.26 M/s ops over time/swap: 38.75 M/s ops over time/xchg int: 38.60 M/s time per op/cas int: 24.37 ns time per op/get: 25.61 ns time per op/incr: 21.72 ns time per op/push & pop: 31.99 ns time per op/swap: 25.80 ns time per op/xchg int: 25.90 ns Ref with [@poll error]: ops over time/cas int: 223.46 M/s ops over time/get: 2609.32 M/s ops over time/incr: 438.75 M/s ops over time/push & pop: 63.77 M/s ops over time/swap: 116.17 M/s ops over time/xchg int: 254.17 M/s time per op/cas int: 4.48 ns time per op/get: 0.38 ns time per op/incr: 2.28 ns time per op/push & pop: 15.68 ns time per op/swap: 8.61 ns time per op/xchg int: 3.93 ns Stack: messages over time/one domain: 42.62 M/s time per message/one domain: 23.46 ns Unix: blocking reads over time/1 worker: 1.47 M/s blocking reads over time/2 workers: 2.94 M/s blocking reads over time/4 workers: 5.96 M/s time per blocking read/1 worker: 678.59 ns time per blocking read/2 workers: 679.86 ns time per blocking read/4 workers: 671.64 ns 2026-02-15 19:13.54 ---> saved as "280470c57e648037f8eeb0be3c90af0e70ee4d443a2ce66f4863eefbc9716837" Job succeeded 2026-02-15 19:13.54: Job succeeded