In addition, I tried 14.04.4 with 4.2.0-27-generic, result is same.,.
Operations performed: 15420 Read, 10280 Write, 32818 Other = 58518 Total
Read 240.94Mb Written 160.62Mb Total transferred 401.56Mb (1.3385Mb/sec)
85.67 Requests/sec executed
Test execution summary:
total time: 300.0019s
total number of events: 25700
total time taken by event execution: 181.3283
per-request statistics:
min: 0.01ms
avg: 7.06ms
max: 117.32ms
approx. 95 percentile: 17.33ms
Threads fairness:
events (avg/stddev): 25700.0000/0.00
execution time (avg/stddev): 181.3283/0.00
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https://bugs.launchpad.net/bugs/1616830
Title:
Bad disk performance with AMD Carrizo FCH controllers
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have had a problem where importing database was much slower in a
dual-boot machine when booted into ubuntu compared to running ubuntu
inside virtualbox in windows 10. It seems Ubuntu does not like Amd
carrizo fch
I collected some information and posted here (and attached as text file to
report):
https://answers.launchpad.net/ubuntu/+question/360373
To put it short, the disk performs up to 10 times better inside
virtualbox. (yes I thought about caches but VM box also has half the
memory and they must favor ubuntu running on real hardware with twice
ram....)
I believe this is a kernel/driver related problem since it directly
effects disk performance.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-34-generic 4.4.0-34.53
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k4.4.0-34-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: jobgo 3381 F.... pulseaudio
/dev/snd/controlC0: jobgo 3381 F.... pulseaudio
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Thu Aug 25 12:36:05 2016
HibernationDevice: RESUME=UUID=ba38c925-a729-4e33-a08f-a7573abd2826
InstallationDate: Installed on 2016-08-23 (1 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: HP HP Pavilion Notebook
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic.efi.signed
root=UUID=cd8e7352-609f-4ebd-83ba-24335f6eece9 ro
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-34-generic N/A
linux-backports-modules-4.4.0-34-generic N/A
linux-firmware 1.157.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/09/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F.17
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 80B5
dmi.board.vendor: HP
dmi.board.version: 81.29
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF.17:bd03/09/2016:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80B5:rvr81.29:cvnHP:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Notebook
dmi.sys.vendor: HP
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