Diff of the two buildlogs: -- --- b1/build.log 2025-09-01 03:36:39.705307336 +0000 +++ b2/build.log 2025-09-01 03:40:16.501577823 +0000 @@ -1,6 +1,6 @@ I: pbuilder: network access will be disabled during build -I: Current time: Sat Oct 3 21:58:15 -12 2026 -I: pbuilder-time-stamp: 1791107895 +I: Current time: Mon Sep 1 17:36:41 +14 2025 +I: pbuilder-time-stamp: 1756697801 I: Building the build Environment I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz] I: copying local configuration @@ -22,53 +22,85 @@ dpkg-source: info: unpacking ocaml-multicore-bench_0.1.7-1.debian.tar.xz I: Not using root during the build. I: Installing the build-deps -I: user script /srv/workspace/pbuilder/3603064/tmp/hooks/D02_print_environment starting +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/D01_modify_environment starting +debug: Running on ionos1-amd64. +I: Changing host+domainname to test build reproducibility +I: Adding a custom variable just for the fun of it... +I: Changing /bin/sh to bash +'/bin/sh' -> '/bin/bash' +lrwxrwxrwx 1 root root 9 Sep 1 03:36 /bin/sh -> /bin/bash +I: Setting pbuilder2's login shell to /bin/bash +I: Setting pbuilder2's GECOS to second user,second room,second work-phone,second home-phone,second other +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/D01_modify_environment finished +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/D02_print_environment starting I: set - BUILDDIR='/build/reproducible-path' - BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other' - BUILDUSERNAME='pbuilder1' - BUILD_ARCH='amd64' - DEBIAN_FRONTEND='noninteractive' - DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 ' - DISTRIBUTION='forky' - HOME='/root' - HOST_ARCH='amd64' + BASH=/bin/sh + BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath + BASH_ALIASES=() + BASH_ARGC=() + BASH_ARGV=() + BASH_CMDS=() + BASH_LINENO=([0]="12" [1]="0") + BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:. + BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment") + BASH_VERSINFO=([0]="5" [1]="2" [2]="37" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu") + BASH_VERSION='5.2.37(1)-release' + BUILDDIR=/build/reproducible-path + BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other' + BUILDUSERNAME=pbuilder2 + BUILD_ARCH=amd64 + DEBIAN_FRONTEND=noninteractive + DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=40 ' + DIRSTACK=() + DISTRIBUTION=forky + EUID=0 + FUNCNAME=([0]="Echo" [1]="main") + GROUPS=() + HOME=/root + HOSTNAME=i-capture-the-hostname + HOSTTYPE=x86_64 + HOST_ARCH=amd64 IFS=' ' - INVOCATION_ID='cde6634f147b4826b105ccae9862c134' - LANG='C' - LANGUAGE='en_US:en' - LC_ALL='C' - MAIL='/var/mail/root' - OPTIND='1' - PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games' - PBCURRENTCOMMANDLINEOPERATION='build' - PBUILDER_OPERATION='build' - PBUILDER_PKGDATADIR='/usr/share/pbuilder' - PBUILDER_PKGLIBDIR='/usr/lib/pbuilder' - PBUILDER_SYSCONFDIR='/etc' - PPID='3603064' - PS1='# ' - PS2='> ' + INVOCATION_ID=fd4d1f14765f4489844c62add1823875 + LANG=C + LANGUAGE=et_EE:et + LC_ALL=C + MACHTYPE=x86_64-pc-linux-gnu + MAIL=/var/mail/root + OPTERR=1 + OPTIND=1 + OSTYPE=linux-gnu + PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path + PBCURRENTCOMMANDLINEOPERATION=build + PBUILDER_OPERATION=build + PBUILDER_PKGDATADIR=/usr/share/pbuilder + PBUILDER_PKGLIBDIR=/usr/lib/pbuilder + PBUILDER_SYSCONFDIR=/etc + PIPESTATUS=([0]="0") + POSIXLY_CORRECT=y + PPID=1848071 PS4='+ ' - PWD='/' - SHELL='/bin/bash' - SHLVL='2' - SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.6x7iaEid/pbuilderrc_6CZl --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.6x7iaEid/b1 --logfile b1/build.log ocaml-multicore-bench_0.1.7-1.dsc' - SUDO_GID='110' - SUDO_HOME='/var/lib/jenkins' - SUDO_UID='105' - SUDO_USER='jenkins' - TERM='unknown' - TZ='/usr/share/zoneinfo/Etc/GMT+12' - USER='root' - _='/usr/bin/systemd-run' - http_proxy='http://213.165.73.152:3128' + PWD=/ + SHELL=/bin/bash + SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix + SHLVL=3 + SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.6x7iaEid/pbuilderrc_8eVg --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.6x7iaEid/b2 --logfile b2/build.log ocaml-multicore-bench_0.1.7-1.dsc' + SUDO_GID=110 + SUDO_HOME=/var/lib/jenkins + SUDO_UID=105 + SUDO_USER=jenkins + TERM=unknown + TZ=/usr/share/zoneinfo/Etc/GMT-14 + UID=0 + USER=root + _='I: set' + http_proxy=http://46.16.76.132:3128 I: uname -a - Linux ionos5-amd64 6.12.41+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) x86_64 GNU/Linux + Linux i-capture-the-hostname 6.12.41+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) x86_64 GNU/Linux I: ls -l /bin - lrwxrwxrwx 1 root root 7 Aug 10 2025 /bin -> usr/bin -I: user script /srv/workspace/pbuilder/3603064/tmp/hooks/D02_print_environment finished + lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/D02_print_environment finished -> Attempting to satisfy build-dependencies -> Creating pbuilder-satisfydepends-dummy package Package: pbuilder-satisfydepends-dummy @@ -260,7 +292,7 @@ Get: 136 http://deb.debian.org/debian forky/main amd64 libmulticore-magic-ocaml amd64 2.3.1-2+b2 [4384 B] Get: 137 http://deb.debian.org/debian forky/main amd64 libmulticore-magic-ocaml-dev amd64 2.3.1-2+b2 [133 kB] Get: 138 http://deb.debian.org/debian forky/main amd64 ocaml-dune amd64 3.17.2-1+b1 [4835 kB] -Fetched 211 MB in 3s (82.3 MB/s) +Fetched 211 MB in 20s (10.3 MB/s) Preconfiguring packages ... Selecting previously unselected package libexpat1:amd64. (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 19897 files and directories currently installed.) @@ -827,7 +859,11 @@ Building tag database... -> Finished parsing the build-deps I: Building the package -I: Running cd /build/reproducible-path/ocaml-multicore-bench-0.1.7/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S > ../ocaml-multicore-bench_0.1.7-1_source.changes +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/A99_set_merged_usr starting +Not re-configuring usrmerge for forky +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/A99_set_merged_usr finished +hostname: Name or service not known +I: Running cd /build/reproducible-path/ocaml-multicore-bench-0.1.7/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S > ../ocaml-multicore-bench_0.1.7-1_source.changes dpkg-buildpackage: info: source package ocaml-multicore-bench dpkg-buildpackage: info: source version 0.1.7-1 dpkg-buildpackage: info: source distribution unstable @@ -848,259 +884,259 @@ dh_ocamlinit -O--buildsystem=ocaml_dune dh_auto_configure -O--buildsystem=ocaml_dune dh_auto_build -O--buildsystem=ocaml_dune - dune build -j 42 -p multicore-bench + dune build -j 40 -p multicore-bench dh_auto_test -O--buildsystem=ocaml_dune - dune runtest -j 42 -p multicore-bench + dune runtest -j 40 -p multicore-bench (cd _build/default/bench && ./main.exe -brief) Atomic: ops over time/cas int: - 96.16 M/s + 47.37 M/s ops over time/get: - 449.87 M/s + 177.86 M/s ops over time/incr: - 110.93 M/s + 54.68 M/s ops over time/push & pop: - 53.88 M/s + 13.99 M/s ops over time/swap: - 66.35 M/s + 14.52 M/s ops over time/xchg int: - 84.74 M/s + 46.03 M/s time per op/cas int: - 10.40 ns + 21.11 ns time per op/get: - 2.22 ns + 5.62 ns time per op/incr: - 9.01 ns + 18.29 ns time per op/push & pop: - 18.56 ns + 71.47 ns time per op/swap: - 15.07 ns + 68.89 ns time per op/xchg int: - 11.80 ns + 21.72 ns Atomic incr: ops over time/CAS, 1 domains: - 78.26 M/s + 64.37 M/s ops over time/CAS, 2 domains: - 33.36 M/s + 41.09 M/s ops over time/CAS, 4 domains: - 29.74 M/s + 17.51 M/s ops over time/CAS, 8 domains: - 22.91 M/s + 17.26 M/s ops over time/CAS with backoff, 1 domains: - 79.59 M/s + 66.55 M/s ops over time/CAS with backoff, 2 domains: - 73.27 M/s + 41.34 M/s ops over time/CAS with backoff, 4 domains: - 25.27 M/s + 49.16 M/s ops over time/CAS with backoff, 8 domains: - 20.67 M/s + 16.10 M/s ops over time/Incr, 1 domains: - 109.29 M/s + 47.49 M/s ops over time/Incr, 2 domains: - 54.82 M/s + 32.60 M/s ops over time/Incr, 4 domains: - 60.72 M/s + 35.97 M/s ops over time/Incr, 8 domains: - 63.53 M/s + 30.38 M/s time per op/CAS, 1 domains: - 12.78 ns + 15.54 ns time per op/CAS, 2 domains: - 59.94 ns + 48.68 ns time per op/CAS, 4 domains: - 134.49 ns + 228.44 ns time per op/CAS, 8 domains: - 349.24 ns + 463.58 ns time per op/CAS with backoff, 1 domains: - 12.56 ns + 15.03 ns time per op/CAS with backoff, 2 domains: - 27.30 ns + 48.38 ns time per op/CAS with backoff, 4 domains: - 158.29 ns + 81.36 ns time per op/CAS with backoff, 8 domains: - 386.98 ns + 496.91 ns time per op/Incr, 1 domains: - 9.15 ns + 21.06 ns time per op/Incr, 2 domains: - 36.49 ns + 61.34 ns time per op/Incr, 4 domains: - 65.88 ns + 111.21 ns time per op/Incr, 8 domains: - 125.92 ns + 263.30 ns Bounded_q: messages over time/1 adder, 1 taker: - 4.48 M/s + 5.66 M/s messages over time/1 adder, 2 takers: - 3.41 M/s + 3.73 M/s messages over time/1 adder, 4 takers: - 1.30 M/s + 1.25 M/s messages over time/2 adders, 1 taker: - 4.24 M/s + 2.78 M/s messages over time/2 adders, 2 takers: - 3.35 M/s + 2.16 M/s messages over time/2 adders, 4 takers: - 1.79 M/s + 2.75 M/s messages over time/4 adders, 1 taker: - 3.85 M/s + 4.97 M/s messages over time/4 adders, 2 takers: - 3.10 M/s + 2.41 M/s messages over time/4 adders, 4 takers: - 1.45 M/s + 2.52 M/s messages over time/one domain: - 11.15 M/s + 1.94 M/s time per message/1 adder, 1 taker: - 446.84 ns + 353.50 ns time per message/1 adder, 2 takers: - 879.51 ns + 803.59 ns time per message/1 adder, 4 takers: - 3855.30 ns + 4006.18 ns time per message/2 adders, 1 taker: - 707.23 ns + 1078.49 ns time per message/2 adders, 2 takers: - 1195.35 ns + 1850.64 ns time per message/2 adders, 4 takers: - 3353.02 ns + 2179.94 ns time per message/4 adders, 1 taker: - 1299.22 ns + 1005.66 ns time per message/4 adders, 2 takers: - 1937.66 ns + 2485.06 ns time per message/4 adders, 4 takers: - 5527.36 ns + 3174.30 ns time per message/one domain: - 89.72 ns + 514.90 ns Hashtbl: operations over time/1 worker, 10% reads: - 13.99 M/s + 3.11 M/s operations over time/1 worker, 50% reads: - 13.88 M/s + 7.45 M/s operations over time/1 worker, 90% reads: - 15.00 M/s + 4.47 M/s operations over time/2 workers, 10% reads: - 4.24 M/s + 4.77 M/s operations over time/2 workers, 50% reads: - 3.43 M/s + 4.80 M/s operations over time/2 workers, 90% reads: - 4.74 M/s + 5.85 M/s operations over time/4 workers, 10% reads: - 4.33 M/s + 3.84 M/s operations over time/4 workers, 50% reads: - 3.68 M/s + 4.79 M/s operations over time/4 workers, 90% reads: - 3.93 M/s + 4.39 M/s operations over time/8 workers, 10% reads: - 1.88 M/s + 2.25 M/s operations over time/8 workers, 50% reads: - 1.83 M/s + 3.26 M/s operations over time/8 workers, 90% reads: - 2.67 M/s + 2.73 M/s operations over time/one domain, 10% reads: - 19.64 M/s + 12.63 M/s operations over time/one domain, 50% reads: - 20.42 M/s + 12.88 M/s operations over time/one domain, 90% reads: - 24.61 M/s + 10.68 M/s time per operation/1 worker, 10% reads: - 71.48 ns + 321.81 ns time per operation/1 worker, 50% reads: - 72.07 ns + 134.15 ns time per operation/1 worker, 90% reads: - 66.67 ns + 223.76 ns time per operation/2 workers, 10% reads: - 471.34 ns + 419.12 ns time per operation/2 workers, 50% reads: - 583.07 ns + 417.09 ns time per operation/2 workers, 90% reads: - 421.65 ns + 341.62 ns time per operation/4 workers, 10% reads: - 923.35 ns + 1041.16 ns time per operation/4 workers, 50% reads: - 1086.47 ns + 834.85 ns time per operation/4 workers, 90% reads: - 1017.91 ns + 910.28 ns time per operation/8 workers, 10% reads: - 4246.73 ns + 3562.17 ns time per operation/8 workers, 50% reads: - 4368.52 ns + 2455.03 ns time per operation/8 workers, 90% reads: - 2997.76 ns + 2932.06 ns time per operation/one domain, 10% reads: - 50.91 ns + 79.18 ns time per operation/one domain, 50% reads: - 48.97 ns + 77.63 ns time per operation/one domain, 90% reads: - 40.63 ns + 93.59 ns Queue: messages over time/one domain: - 34.13 M/s + 8.23 M/s time per message/one domain: - 29.30 ns + 121.52 ns Ref with Mutex: ops over time/cas int: - 29.25 M/s + 7.89 M/s ops over time/get: - 31.23 M/s + 13.06 M/s ops over time/incr: - 30.96 M/s + 6.86 M/s ops over time/push & pop: - 25.70 M/s + 7.02 M/s ops over time/swap: - 27.21 M/s + 7.58 M/s ops over time/xchg int: - 29.30 M/s + 9.84 M/s time per op/cas int: - 34.19 ns + 126.71 ns time per op/get: - 32.02 ns + 76.58 ns time per op/incr: - 32.30 ns + 145.85 ns time per op/push & pop: - 38.92 ns + 142.37 ns time per op/swap: - 36.75 ns + 132.01 ns time per op/xchg int: - 34.13 ns + 101.63 ns Ref with [@poll error]: ops over time/cas int: - 168.88 M/s + 58.55 M/s ops over time/get: - 522.78 M/s + 179.96 M/s ops over time/incr: - 361.51 M/s + 321.64 M/s ops over time/push & pop: - 72.10 M/s + 13.19 M/s ops over time/swap: - 103.22 M/s + 32.08 M/s ops over time/xchg int: - 168.88 M/s + 58.42 M/s time per op/cas int: - 5.92 ns + 17.08 ns time per op/get: - 1.91 ns + 5.56 ns time per op/incr: - 2.77 ns + 3.11 ns time per op/push & pop: - 13.87 ns + 75.81 ns time per op/swap: - 9.69 ns + 31.17 ns time per op/xchg int: - 5.92 ns + 17.12 ns Stack: messages over time/one domain: - 40.49 M/s + 8.23 M/s time per message/one domain: - 24.70 ns + 121.48 ns Unix: blocking reads over time/1 worker: - 1.19 M/s + 0.87 M/s blocking reads over time/2 workers: - 2.39 M/s + 1.24 M/s blocking reads over time/4 workers: - 4.86 M/s + 2.11 M/s time per blocking read/1 worker: - 837.34 ns + 1152.22 ns time per blocking read/2 workers: - 836.67 ns + 1617.46 ns time per blocking read/4 workers: - 822.82 ns + 1896.16 ns create-stamp debian/debhelper-build-stamp dh_testroot -O--buildsystem=ocaml_dune dh_prep -O--buildsystem=ocaml_dune @@ -1128,8 +1164,8 @@ dpkg-gencontrol: warning: Depends field of package libmulticore-bench-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined dh_md5sums -O--buildsystem=ocaml_dune dh_builddeb -O--buildsystem=ocaml_dune -dpkg-deb: building package 'libmulticore-bench-ocaml-dev' in '../libmulticore-bench-ocaml-dev_0.1.7-1_amd64.deb'. dpkg-deb: building package 'libmulticore-bench-ocaml-dev-dbgsym' in '../libmulticore-bench-ocaml-dev-dbgsym_0.1.7-1_amd64.deb'. +dpkg-deb: building package 'libmulticore-bench-ocaml-dev' in '../libmulticore-bench-ocaml-dev_0.1.7-1_amd64.deb'. dpkg-genbuildinfo --build=binary -O../ocaml-multicore-bench_0.1.7-1_amd64.buildinfo dpkg-genchanges --build=binary -O../ocaml-multicore-bench_0.1.7-1_amd64.changes dpkg-genchanges: info: binary-only upload (no source code included) @@ -1137,12 +1173,14 @@ dpkg-buildpackage: info: binary-only upload (no source included) dpkg-genchanges: info: including full source code in upload I: copying local configuration +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/B01_cleanup starting +I: user script /srv/workspace/pbuilder/1848071/tmp/hooks/B01_cleanup finished I: unmounting dev/ptmx filesystem I: unmounting dev/pts filesystem I: unmounting dev/shm filesystem I: unmounting proc filesystem I: unmounting sys filesystem I: cleaning the build env -I: removing directory /srv/workspace/pbuilder/3603064 and its subdirectories -I: Current time: Sat Oct 3 21:59:36 -12 2026 -I: pbuilder-time-stamp: 1791107976 +I: removing directory /srv/workspace/pbuilder/1848071 and its subdirectories +I: Current time: Mon Sep 1 17:40:16 +14 2025 +I: pbuilder-time-stamp: 1756698016