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:opensuse-15.6-4.14_opam-2.5) Base: ocaml/opam:opensuse-15.6-ocaml-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7 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-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7 # opensuse-15.6-4.14_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:opensuse-15.6-ocaml-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7-opensuse-15.6-4.14_opam-2.5-3276ee940043c1e69634f204ac603fad" 2026-02-13 08:07.01: Using OBuilder spec: ((from ocaml/opam:opensuse-15.6-ocaml-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7) (comment opensuse-15.6-4.14_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 11:20.04: Waiting for worker… 2026-02-13 11:23.42: 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:opensuse-15.6-ocaml-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7) Unable to find image 'ocaml/opam:opensuse-15.6-ocaml-4.14@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7' locally docker.io/ocaml/opam@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7: Pulling from ocaml/opam 625c79e3ae60: Already exists ca6439633d2f: Already exists 3e61b5a3343d: Already exists 572d4bcd324d: Already exists 3994ff15a7b0: Already exists 1d676486d940: Already exists 1805f8e47dca: Already exists 3582d9a1382c: Already exists ac0b974faa58: Already exists 67d656ab5910: Already exists 839cdf272e6c: Already exists 8689175d709f: Already exists e40b27547779: Already exists 88cb140bc0e8: Already exists ab3a4a69e4f4: Already exists e4fd7a94954f: Already exists 92f036b4edea: Already exists 396a718de0b7: Already exists 396a718de0b7: Already exists 4f4fb700ef54: Already exists 0420ccc16eca: Already exists cc2c69f374ef: Already exists 22899c47761b: Already exists 8faa077d3a79: Already exists b972aa889009: Already exists c6b297e7480d: Already exists 3bcaed3c075b: Already exists e04276e867bb: Already exists 1abd543659d3: Already exists cdfeed99d27a: Already exists 31a3fe0454c7: Already exists 27bd77ac4143: Already exists 83ee7dcdeec7: Already exists 1619bb7b4db1: Already exists 22f6e36aa5fa: Already exists f64ad179410d: Already exists 8794b54faffb: Already exists bb981eaa95e1: Already exists a0128ffaf5eb: Already exists 5a412c9f106b: Already exists 80db8971c211: Already exists 6a2ee1c75511: Already exists Digest: sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7 Status: Downloaded newer image for ocaml/opam@sha256:06017813d28497e89c59cf3d506db67c96f556fc1ec8d5031826d12721c9a0f7 2026-02-13 11:23.43 ---> using "52e816f0aa85450cfc16d266041d2887ffe3489dbdcd0251f1fe96de79154cb7" from cache /: (comment opensuse-15.6-4.14_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 11:23.43 ---> using "8650481d781dc9d0d26de5f6a96edc122ddbd937f45050431815622602800d6f" 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 2026-02-13 11:23.43 ---> using "a639c37e4752436ea63c6b5c9003994a92c182efd195e74310c07ebbd376ee98" 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 11:23.43 ---> using "30e93a1d8eec7e3649eb26c2f3bbb48b8dc12ffbfe81099d2373f40888537920" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-02-13 11:23.43 ---> using "725df111b3eaf2178920dcb3b270894ce79a00a527e6f87689cad4be88f17e77" 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 8e1b9a49e8..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 11:23.43 ---> using "4a20659d7ced7bdc4981e142895a4088a57a0c151ba98006870f60af50895590" from cache /src: (copy (src multicore-bench.opam) (dst ./)) 2026-02-13 11:23.43 ---> saved as "2ee5e647fd981cbcece29117bbe5f47a5f66ce2c082d227b6436d0d24eb832f4" /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 11:23.45 ---> saved as "f9552a84477a12a4be01f6065a136f7fcaa9d4f1c8143f3981206381f4d7afc5" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-02-13 11:23.46 ---> saved as "579c38baf6077a28895bc98d479154235408a09556314b46594fe347da0aab1c" /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" - Retrieving repository 'Update repository of openSUSE Backports' metadata [.. - Looking for gpg keys in repository Update repository of openSUSE Backports. - gpgkey=http://download.opensuse.org/update/leap/15.6/backports/repodata/repomd.xml.key - ... - ..... - .............done] - Building repository 'Update repository of openSUSE Backports' cache [.. - ..done] - Retrieving repository 'Update repository with updates from SUSE Linux Enterprise 15' metadata [.. - Looking for gpg keys in repository Update repository with updates from SUSE Linux Enterprise 15. - gpgkey=http://download.opensuse.org/update/leap/15.6/sle/repodata/repomd.xml.key - ..... - .... - ............ - ... - . - .......... - .......... - ......... - ....... - ......... - .......... - .......... - ......... - ...... - ......... - .......... - .......... - ........ - ....... - ..... - ............ - done] - Building repository 'Update repository with updates from SUSE Linux Enterprise 15' cache [.. - ..done] - Retrieving repository 'Main Update Repository' metadata [.. - - Looking for gpg keys in repository Main Update Repository. - gpgkey=http://download.opensuse.org/update/leap/15.6/oss/repodata/repomd.xml.key - ..... - .... - .............done] - Building repository 'Main Update Repository' cache [....done] - Retrieving repository 'Update Repository (Non-Oss)' metadata [.. - Looking for gpg keys in repository Update Repository (Non-Oss). - gpgkey=http://download.opensuse.org/update/leap/15.6/non-oss/repodata/repomd.xml.key - ... - .............done] - Building repository 'Update Repository (Non-Oss)' cache [.. - ..done] - 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 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 11:25.38 ---> saved as "047d843c62d33a4ba973aff973521fe32ab2d54896959f8f77211a7662366e0d" /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 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 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 domain_shims.0.1.0 -> installed csexp.1.5.2 -> installed result.1.5 -> installed thread-table.1.0.0 -> installed multicore-magic.2.3.2 -> installed backoff.0.1.1 -> installed camlp-streams.5.0.1 -> installed ocaml-version.4.0.3 -> 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 11:26.34 ---> saved as "2687e97589d845b4bf1fe0b11a88542e6dcbac3133eb4be6a85417d963752754" /src: (copy (src .) (dst /src)) 2026-02-13 11:26.35 ---> saved as "6d64c75a08d2a0881de5f95a68e4704332f0348ecd32421d2ffd5494d0cc87a8" /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: 123.71 M/s ops over time/get: 1207.62 M/s ops over time/incr: 222.08 M/s ops over time/push & pop: 34.51 M/s ops over time/swap: 98.13 M/s ops over time/xchg int: 193.95 M/s time per op/cas int: 8.08 ns time per op/get: 0.83 ns time per op/incr: 4.50 ns time per op/push & pop: 28.98 ns time per op/swap: 10.19 ns time per op/xchg int: 5.16 ns Atomic incr: ops over time/CAS, 1 domains: 101.55 M/s ops over time/CAS with backoff, 1 domains: 97.50 M/s ops over time/Incr, 1 domains: 193.99 M/s time per op/CAS, 1 domains: 9.85 ns time per op/CAS with backoff, 1 domains: 10.26 ns time per op/Incr, 1 domains: 5.15 ns Bounded_q: messages over time/one domain: 4.35 M/s time per message/one domain: 229.63 ns Hashtbl: operations over time/1 worker, 10% reads: 4.76 M/s operations over time/1 worker, 50% reads: 5.27 M/s operations over time/1 worker, 90% reads: 5.67 M/s operations over time/2 workers, 10% reads: 4.70 M/s operations over time/2 workers, 50% reads: 5.26 M/s operations over time/2 workers, 90% reads: 5.59 M/s operations over time/4 workers, 10% reads: 4.63 M/s operations over time/4 workers, 50% reads: 5.11 M/s operations over time/4 workers, 90% reads: 5.78 M/s operations over time/8 workers, 10% reads: 4.83 M/s operations over time/8 workers, 50% reads: 5.36 M/s operations over time/8 workers, 90% reads: 5.71 M/s operations over time/one domain, 10% reads: 10.45 M/s operations over time/one domain, 50% reads: 10.76 M/s operations over time/one domain, 90% reads: 11.72 M/s time per operation/1 worker, 10% reads: 209.95 ns time per operation/1 worker, 50% reads: 189.63 ns time per operation/1 worker, 90% reads: 176.29 ns time per operation/2 workers, 10% reads: 425.11 ns time per operation/2 workers, 50% reads: 380.24 ns time per operation/2 workers, 90% reads: 357.93 ns time per operation/4 workers, 10% reads: 863.74 ns time per operation/4 workers, 50% reads: 782.74 ns time per operation/4 workers, 90% reads: 691.93 ns time per operation/8 workers, 10% reads: 1655.64 ns time per operation/8 workers, 50% reads: 1492.03 ns time per operation/8 workers, 90% reads: 1400.52 ns time per operation/one domain, 10% reads: 95.72 ns time per operation/one domain, 50% reads: 92.91 ns time per operation/one domain, 90% reads: 85.30 ns Queue: messages over time/one domain: 23.01 M/s time per message/one domain: 43.46 ns Ref with Mutex: ops over time/cas int: 16.71 M/s ops over time/get: 17.59 M/s ops over time/incr: 17.52 M/s ops over time/push & pop: 16.34 M/s ops over time/swap: 10.84 M/s ops over time/xchg int: 15.93 M/s time per op/cas int: 59.85 ns time per op/get: 56.85 ns time per op/incr: 57.08 ns time per op/push & pop: 61.21 ns time per op/swap: 92.22 ns time per op/xchg int: 62.77 ns Ref with [@poll error]: ops over time/cas int: 119.71 M/s ops over time/get: 1197.94 M/s ops over time/incr: 197.74 M/s ops over time/push & pop: 32.78 M/s ops over time/swap: 52.60 M/s ops over time/xchg int: 117.73 M/s time per op/cas int: 8.35 ns time per op/get: 0.83 ns time per op/incr: 5.06 ns time per op/push & pop: 30.50 ns time per op/swap: 19.01 ns time per op/xchg int: 8.49 ns Stack: messages over time/one domain: 34.97 M/s time per message/one domain: 28.60 ns Unix: blocking reads over time/1 worker: 0.31 M/s time per blocking read/1 worker: 3197.34 ns 2026-02-13 11:26.44 ---> saved as "e7033dfac2b6319fba9b7e5f9f92d3bf383424d12f31bf886ee3f3af3ef70c15" Job succeeded 2026-02-13 11:26.44: Job succeeded