2026-02-13 08:07.01: New job: test ocaml-multicore/multicore-bench https://github.com/ocaml-multicore/multicore-bench.git#refs/heads/main (efb15d8562dbdc1ba976ffc574de028e3c11c123) (linux-x86_64:ubuntu-22.04-4.14_opam-2.5) Base: ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 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:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 # ubuntu-22.04-4.14_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 2026-02-13 08:07.01: Using cache hint "ocaml-multicore/multicore-bench-ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08-ubuntu-22.04-4.14_opam-2.5-3276ee940043c1e69634f204ac603fad" 2026-02-13 08:07.01: Using OBuilder spec: ((from ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08) (comment ubuntu-22.04-4.14_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")) ) 2026-02-13 08:07.01: Waiting for resource in pool OCluster 2026-02-13 11:19.58: Waiting for worker… 2026-02-13 11:23.36: Got resource from pool OCluster Building on eumache All commits already cached HEAD is now at efb15d8 Inline `Atomic` and `Ref` ops and unroll (from ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08) 2026-02-13 11:23.36 ---> using "82c50a0cbf04f29b81010c51cd3ec548d69ed37c97c76d03cc86a5cf2c47a5d5" from cache /: (comment ubuntu-22.04-4.14_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")) 2026-02-13 11:23.36 ---> using "d8d96c87b6227f5242abf545502bad6a75c73eae7d79b373871ad3a7d8c45228" 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 2026-02-13 11:23.36 ---> using "d811c351465aee87f56e66bdf4ea1af2b8288714d1ea59d69c4f2cd442eda9e1" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 5.15.0-131-generic The OCaml toplevel, version 4.14.2 2.5.0 2026-02-13 11:23.36 ---> using "635afcb073603434110c0b39c7baaa419ac6a3035cc12f4d7f2f0d922391170a" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-02-13 11:23.36 ---> using "e5b890cff0e1c742768a821ee6181eea03a625ad0cfd3ba68cc397ded410473e" 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 92679ed614..302e116c40 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 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) 2026-02-13 11:23.36 ---> using "85c44f9a6137b7d00ea7bb338a83d9102eebae9ad63ff47efaf6129813ded79c" from cache /src: (copy (src multicore-bench.opam) (dst ./)) 2026-02-13 11:23.37 ---> saved as "55991bae77d03f78743676d49e74572d668e4248ab90a759aa1f768fa6fe9eba" /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) 2026-02-13 11:23.40 ---> saved as "306874898d44ad79668455f2e1a3a4f54536d601166331fa4d7deab0cf6da5d7" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-02-13 11:23.41 ---> saved as "2d53a07c432c9a7748a55ae933deae6ce71cfbdd7bdaf8b6754fa97a249ae44e" /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 "apt-get" "update" - Get:1 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB] - Hit:2 http://archive.ubuntu.com/ubuntu jammy InRelease - Get:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease [128 kB] - Get:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease [127 kB] - Get:5 http://security.ubuntu.com/ubuntu jammy-security/multiverse amd64 Packages [62.6 kB] - Get:6 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages [1299 kB] - Get:7 http://security.ubuntu.com/ubuntu jammy-security/restricted amd64 Packages [6468 kB] - Get:8 http://archive.ubuntu.com/ubuntu jammy-updates/multiverse amd64 Packages [70.9 kB] - Get:9 http://archive.ubuntu.com/ubuntu jammy-updates/restricted amd64 Packages [6688 kB] - Get:10 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages [3708 kB] - Get:11 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [4047 kB] - Get:12 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1611 kB] - Fetched 24.3 MB in 2s (11.3 MB/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). # To update the current shell environment, run: eval $(opam env) 2026-02-13 11:24.01 ---> saved as "9f6c6676fe2b5a35de64e2489052a94881b77f62973a12b470141dce79421752" /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 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 yojson.3.0.0 (cached) -> retrieved topkg.1.1.1 (cached) -> retrieved dune.3.21.1 (cached) -> installed ocamlfind.1.9.8 -> installed cmdliner.2.1.0 -> 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 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 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) 2026-02-13 11:25.50 ---> saved as "66ae7c22b2d4170a02a12131ea9750d627eafb4b30a3b0408d4f32aede72f98a" /src: (copy (src .) (dst /src)) 2026-02-13 11:25.51 ---> saved as "6ace85a37d522eabadd0b445821b81c81d01f1a8d4678fa5d945fc2dc6a0dfd4" /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: 167.24 M/s ops over time/get: 1327.67 M/s ops over time/incr: 226.67 M/s ops over time/push & pop: 56.28 M/s ops over time/swap: 94.58 M/s ops over time/xchg int: 182.49 M/s time per op/cas int: 5.98 ns time per op/get: 0.75 ns time per op/incr: 4.41 ns time per op/push & pop: 17.77 ns time per op/swap: 10.57 ns time per op/xchg int: 5.48 ns Atomic incr: ops over time/CAS, 1 domains: 155.26 M/s ops over time/CAS with backoff, 1 domains: 158.82 M/s ops over time/Incr, 1 domains: 192.43 M/s time per op/CAS, 1 domains: 6.44 ns time per op/CAS with backoff, 1 domains: 6.30 ns time per op/Incr, 1 domains: 5.20 ns Bounded_q: messages over time/one domain: 4.30 M/s time per message/one domain: 232.46 ns Hashtbl: operations over time/1 worker, 10% reads: 7.67 M/s operations over time/1 worker, 50% reads: 7.91 M/s operations over time/1 worker, 90% reads: 5.51 M/s operations over time/2 workers, 10% reads: 5.17 M/s operations over time/2 workers, 50% reads: 7.94 M/s operations over time/2 workers, 90% reads: 5.86 M/s operations over time/4 workers, 10% reads: 4.92 M/s operations over time/4 workers, 50% reads: 4.95 M/s operations over time/4 workers, 90% reads: 8.19 M/s operations over time/8 workers, 10% reads: 4.52 M/s operations over time/8 workers, 50% reads: 5.32 M/s operations over time/8 workers, 90% reads: 4.74 M/s operations over time/one domain, 10% reads: 11.07 M/s operations over time/one domain, 50% reads: 9.10 M/s operations over time/one domain, 90% reads: 9.69 M/s time per operation/1 worker, 10% reads: 130.35 ns time per operation/1 worker, 50% reads: 126.38 ns time per operation/1 worker, 90% reads: 181.45 ns time per operation/2 workers, 10% reads: 387.06 ns time per operation/2 workers, 50% reads: 251.76 ns time per operation/2 workers, 90% reads: 341.04 ns time per operation/4 workers, 10% reads: 813.79 ns time per operation/4 workers, 50% reads: 807.73 ns time per operation/4 workers, 90% reads: 488.55 ns time per operation/8 workers, 10% reads: 1769.36 ns time per operation/8 workers, 50% reads: 1504.20 ns time per operation/8 workers, 90% reads: 1687.74 ns time per operation/one domain, 10% reads: 90.36 ns time per operation/one domain, 50% reads: 109.93 ns time per operation/one domain, 90% reads: 103.24 ns Queue: messages over time/one domain: 31.11 M/s time per message/one domain: 32.14 ns Ref with Mutex: ops over time/cas int: 11.30 M/s ops over time/get: 11.81 M/s ops over time/incr: 11.86 M/s ops over time/push & pop: 10.87 M/s ops over time/swap: 10.58 M/s ops over time/xchg int: 11.06 M/s time per op/cas int: 88.51 ns time per op/get: 84.64 ns time per op/incr: 84.29 ns time per op/push & pop: 92.03 ns time per op/swap: 94.56 ns time per op/xchg int: 90.44 ns Ref with [@poll error]: ops over time/cas int: 97.56 M/s ops over time/get: 1047.07 M/s ops over time/incr: 169.76 M/s ops over time/push & pop: 29.44 M/s ops over time/swap: 45.88 M/s ops over time/xchg int: 105.32 M/s time per op/cas int: 10.25 ns time per op/get: 0.96 ns time per op/incr: 5.89 ns time per op/push & pop: 33.97 ns time per op/swap: 21.80 ns time per op/xchg int: 9.50 ns Stack: messages over time/one domain: 20.03 M/s time per message/one domain: 49.92 ns Unix: blocking reads over time/1 worker: 0.30 M/s time per blocking read/1 worker: 3287.58 ns 2026-02-13 11:25.59 ---> saved as "0a084082c54addfec5b9820439318eac0d392e6faa183e2af63462f77da58bbf" Job succeeded 2026-02-13 11:25.59: Job succeeded