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Message #59971
[Bug 1316110] Re: perf samples too long
** Tags added: bios-outdated-0803
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https://bugs.launchpad.net/bugs/1316110
Title:
perf samples too long
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
I always see these lines in `dmesg` and wonder what these mean:
[ 3805.057535] perf samples too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
They repeat often and I think the value
kernel.perf_event_max_sample_rate should be somehow optimized. How can
I do that?
Or it is a bug?
Thanks
Michael
---
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: michael.heuberger 1907 F.... pulseaudio
/dev/snd/controlC1: michael.heuberger 1907 F.... pulseaudio
/dev/snd/controlC0: michael.heuberger 1907 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=4bbd9d93-8982-4c0a-a955-0554ee12e4f8
InstallationDate: Installed on 2014-05-01 (4 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=47ab151a-c47d-4eff-ab5b-7751fc32014d ro quiet
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
RelatedPackageVersions:
linux-restricted-modules-3.13.0-24-generic N/A
linux-backports-modules-3.13.0-24-generic N/A
linux-firmware 1.127
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
Tags: trusty
Uname: Linux 3.13.0-24-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/10/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0701
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6X58D-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0701:bd05/10/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6X58D-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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References