Verified 2.27-3ubuntu1.3 on Bionic: root@bb-glibc:~# gcc strstr.c root@bb-glibc:~# time ./a.out aa matches = 3000000
real 0m4.149s user 0m4.146s sys 0m0.000s root@bb-glibc:~# sed -i s/backports/proposed/ /etc/apt/sources.list root@bb-glibc:~# apt update Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease Get:2 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Get:3 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:4 http://archive.ubuntu.com/ubuntu bionic-proposed InRelease [242 kB] Get:5 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages [123 kB] Get:6 http://archive.ubuntu.com/ubuntu bionic-proposed/main Translation-en [30.1 kB] Get:7 http://archive.ubuntu.com/ubuntu bionic-proposed/restricted amd64 Packages [40.9 kB] Get:8 http://archive.ubuntu.com/ubuntu bionic-proposed/restricted Translation-en [7508 B] Get:9 http://archive.ubuntu.com/ubuntu bionic-proposed/universe amd64 Packages [22.1 kB] Get:10 http://archive.ubuntu.com/ubuntu bionic-proposed/universe Translation-en [11.0 kB] Get:11 http://archive.ubuntu.com/ubuntu bionic-proposed/multiverse amd64 Packages [7244 B] Get:12 http://archive.ubuntu.com/ubuntu bionic-proposed/multiverse Translation-en [2172 B] Fetched 664 kB in 1s (852 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done 21 packages can be upgraded. Run 'apt list --upgradable' to see them. root@bb-glibc:~# apt install libc6 libc-bin locales Reading package lists... Done Building dependency tree Reading state information... Done The following package was automatically installed and is no longer required: libfreetype6 Use 'apt autoremove' to remove it. The following additional packages will be installed: libc-dev-bin libc6-dev Suggested packages: glibc-doc The following packages will be upgraded: libc-bin libc-dev-bin libc6 libc6-dev locales 5 upgraded, 0 newly installed, 0 to remove and 16 not upgraded. Need to get 9741 kB of archives. After this operation, 13.3 kB of additional disk space will be used. Do you want to continue? [Y/n] Get:1 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 libc6-dev amd64 2.27-3ubuntu1.3 [2586 kB] Get:2 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 libc-dev-bin amd64 2.27-3ubuntu1.3 [71.8 kB] Get:3 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 libc6 amd64 2.27-3ubuntu1.3 [2831 kB] Get:4 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 locales all 2.27-3ubuntu1.3 [3613 kB] Get:5 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 libc-bin amd64 2.27-3ubuntu1.3 [639 kB] Fetched 9741 kB in 2s (5058 kB/s) Preconfiguring packages ... (Reading database ... 32938 files and directories currently installed.) Preparing to unpack .../libc6-dev_2.27-3ubuntu1.3_amd64.deb ... Unpacking libc6-dev:amd64 (2.27-3ubuntu1.3) over (2.27-3ubuntu1.2) ... Preparing to unpack .../libc-dev-bin_2.27-3ubuntu1.3_amd64.deb ... Unpacking libc-dev-bin (2.27-3ubuntu1.3) over (2.27-3ubuntu1.2) ... Preparing to unpack .../libc6_2.27-3ubuntu1.3_amd64.deb ... Unpacking libc6:amd64 (2.27-3ubuntu1.3) over (2.27-3ubuntu1.2) ... Setting up libc6:amd64 (2.27-3ubuntu1.3) ... (Reading database ... 32938 files and directories currently installed.) Preparing to unpack .../locales_2.27-3ubuntu1.3_all.deb ... Unpacking locales (2.27-3ubuntu1.3) over (2.27-3ubuntu1.2) ... Preparing to unpack .../libc-bin_2.27-3ubuntu1.3_amd64.deb ... Unpacking libc-bin (2.27-3ubuntu1.3) over (2.27-3ubuntu1.2) ... Setting up libc-bin (2.27-3ubuntu1.3) ... Setting up libc-dev-bin (2.27-3ubuntu1.3) ... Setting up libc6-dev:amd64 (2.27-3ubuntu1.3) ... Setting up locales (2.27-3ubuntu1.3) ... Generating locales (this might take a while)... en_US.UTF-8... done Generation complete. Processing triggers for man-db (2.8.3-2ubuntu0.1) ... root@bb-glibc:~# apt list --upgradable Listing... Done cryptsetup/bionic-proposed 2:2.0.2-1ubuntu1.2 amd64 [upgradable from: 2:2.0.2-1ubuntu1.1] cryptsetup-bin/bionic-proposed 2:2.0.2-1ubuntu1.2 amd64 [upgradable from: 2:2.0.2-1ubuntu1.1] libcryptsetup12/bionic-proposed 2:2.0.2-1ubuntu1.2 amd64 [upgradable from: 2:2.0.2-1ubuntu1.1] libparted2/bionic-proposed 3.2-20ubuntu0.3 amd64 [upgradable from: 3.2-20ubuntu0.2] linux-libc-dev/bionic-proposed 4.15.0-119.120 amd64 [upgradable from: 4.15.0-118.119] login/bionic-proposed 1:4.5-1ubuntu2.1 amd64 [upgradable from: 1:4.5-1ubuntu2] multiarch-support/bionic-proposed 2.27-3ubuntu1.3 amd64 [upgradable from: 2.27-3ubuntu1.2] openssh-client/bionic-proposed 1:7.6p1-4ubuntu0.4 amd64 [upgradable from: 1:7.6p1-4ubuntu0.3] openssh-server/bionic-proposed 1:7.6p1-4ubuntu0.4 amd64 [upgradable from: 1:7.6p1-4ubuntu0.3] openssh-sftp-server/bionic-proposed 1:7.6p1-4ubuntu0.4 amd64 [upgradable from: 1:7.6p1-4ubuntu0.3] parted/bionic-proposed 3.2-20ubuntu0.3 amd64 [upgradable from: 3.2-20ubuntu0.2] passwd/bionic-proposed 1:4.5-1ubuntu2.1 amd64 [upgradable from: 1:4.5-1ubuntu2] python3-distupgrade/bionic-proposed 1:18.04.39 all [upgradable from: 1:18.04.38] sudo/bionic-proposed 1.8.21p2-3ubuntu1.3 amd64 [upgradable from: 1.8.21p2-3ubuntu1.2] ubuntu-release-upgrader-core/bionic-proposed 1:18.04.39 all [upgradable from: 1:18.04.38] uidmap/bionic-proposed 1:4.5-1ubuntu2.1 amd64 [upgradable from: 1:4.5-1ubuntu2] root@bb-glibc:~# time ./a.out aa matches = 3000000 real 0m0.410s user 0m0.407s sys 0m0.003s root@bb-glibc:~# cat /proc/cpuinfo | head -n 6 processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz stepping : 3 root@bb-glibc:~# cat /proc/cpuinfo | head -n 6 ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1797335 Title: strstr() on ubuntu18.04 8 times slower than on ubuntu16 To manage notifications about this bug go to: https://bugs.launchpad.net/glibc/+bug/1797335/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
