I've just reproduced the problem with 14.04 GA and a 3.13.0-24-generic kernel:
$ for x in `seq 0 9`; do start=`date +"%s"`; sleep 60; stop=`date +"%s"`; echo "$stop - $start"|bc; done 63 60 60 60 61 60 60 60 60 61 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1563970 Title: Clock issues on AMD Opteron(tm) Processor 6320 Status in linux package in Ubuntu: Confirmed Bug description: In doing certification testing on an HP DL385p Gen8 server with an AMD Opteron(tm) Processor 6320 CPU, we've run into some clock issues, as illustrated by the following: $ for x in `seq 0 9`; do start=`date +"%s"`; sleep 60; stop=`date +"%s"`; echo "$stop - $start"|bc; done 65 62 60 60 60 61 60 60 60 61 This should produce a string of "60" values, and does on most systems; however, on the DL385p Gen8, the output shown above is quite irregular. (The test we use in the certification suite is more specialized and is not this exact test; the above is simply an easy- to-reproduce bash variant.) The system in question is "phelps" in OIL. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-15-generic 4.4.0-15.31 ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6 Uname: Linux 4.4.0-15-generic x86_64 AlsaDevices: total 0 crw-rw----+ 1 root audio 116, 1 Mar 29 14:43 seq crw-rw----+ 1 root audio 116, 33 Mar 29 14:43 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20-0ubuntu3 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser' Date: Wed Mar 30 12:13:22 2016 HibernationDevice: RESUME=UUID=b6a44b05-ebe0-4d1c-a525-69d4748960f8 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: HP ProLiant DL385p Gen8 PciMultimedia: ProcEnviron: TERM=screen PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic root=UUID=96485ede-c1a8-407d-9960-f4cfa725ea89 ro rootdelay=60 RelatedPackageVersions: linux-restricted-modules-4.4.0-15-generic N/A linux-backports-modules-4.4.0-15-generic N/A linux-firmware 1.157 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/06/2014 dmi.bios.vendor: HP dmi.bios.version: A28 dmi.chassis.type: 23 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrA28:bd02/06/2014:svnHP:pnProLiantDL385pGen8:pvr:cvnHP:ct23:cvr: dmi.product.name: ProLiant DL385p Gen8 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1563970/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
