apport information ** Tags added: apport-collected utopic
** Description changed: I've just upgraded two servers to use 14.10 (they were before at 14.04) and found that my builds were taking much longer: - A jenkins regression test suite that took about 135 minutes is now taking about 300 minutes. - A C complation tasks which took the following amount of time (time from tcsh): 419.633u 9.471s 1:36.78 443.3% 0+0k 0+166968io 0pf+0w is now taking 519.637u 11.022s 4:42.80 187.6% 0+0k 0+176216io 0pf+0w Both tasks are heavily using all the available cores of the processor. In one case it is a dual socket E5420 ( 8 cores), in another case it is a virtualized 8 cores E5645. I first thought it could be the new version of gcc (4.9) since both tasks involves a lot of C compilation. Although gcc 4.9 is slower (3s vs 2.8s in my own tests) it is not enough to explain the difference. I actually also tried using gcc 4.8 and 4.7 with the same performance degradation. I unfortunately do not have a 14.04 server to which I can compare the results to see where the difference is in terms of performance. Is anyone observing the same behavior? + --- + AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory + AplayDevices: Error: [Errno 2] No such file or directory + ApportVersion: 2.14.7-0ubuntu8 + Architecture: amd64 + ArecordDevices: Error: [Errno 2] No such file or directory + CRDA: Error: [Errno 2] No such file or directory + DistroRelease: Ubuntu 14.10 + HibernationDevice: RESUME=UUID=9a90cb5e-bce2-49fc-8c26-8f3d23bce997 + InstallationDate: Installed on 2012-05-15 (899 days ago) + InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1) + IwConfig: + eth0 no wireless extensions. + + eth1 no wireless extensions. + + lo no wireless extensions. + MachineType: System manufacturer System Product Name + Package: linux (not installed) + PciMultimedia: + + ProcEnviron: + TERM=vt100 + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=C + SHELL=/usr/bin/tcsh + ProcFB: 0 radeondrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=14f555da-6c91-4091-9976-f16962890c86 ro + ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 + PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. + RelatedPackageVersions: + linux-restricted-modules-3.13.0-37-generic N/A + linux-backports-modules-3.13.0-37-generic N/A + linux-firmware 1.138 + RfKill: Error: [Errno 2] No such file or directory + Tags: utopic utopic + Uname: Linux 3.13.0-37-generic x86_64 + UnreportableReason: The report belongs to a package that is not installed. + UpgradeStatus: Upgraded to utopic on 2014-10-28 (3 days ago) + UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 12/13/2007 + dmi.bios.vendor: Phoenix Technologies LTD + dmi.bios.version: 1004 + dmi.board.name: DSBF-DE + dmi.board.vendor: ASUSTek Computer Inc. + dmi.board.version: REV : 1.xxG + dmi.chassis.asset.tag: Asset-1234567890 + dmi.chassis.type: 1 + dmi.chassis.vendor: Chassis Manufacture + dmi.chassis.version: Chassis Version + dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr1004:bd12/13/2007:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTekComputerInc.:rnDSBF-DE:rvrREV1.xxG:cvnChassisManufacture:ct1:cvrChassisVersion: + dmi.product.name: System Product Name + dmi.product.version: System Version + dmi.sys.vendor: System manufacturer ** Attachment added: "AudioDevicesInUse.txt" https://bugs.launchpad.net/bugs/1388276/+attachment/4250541/+files/AudioDevicesInUse.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1388276 Title: 14.10 about 2 to 3 times slower to perform concurrent tasks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
