Public bug reported:
I recently installed a new motherboard Asus M5A99FX PRO R2.0 and found
out that IO speed is very low; i.e. the dd command output:
dd if=/dev/zero of=/tmp/output bs=8k count=1000k
gives
^C13885+0 records in
13885+0 records out
113745920 bytes (114 MB) copied, 99.6639 s, 1.1 MB/s
This issue is reproducing with my new SSD (with ext4), my USB drives and
my hard disk (with ext4) from Ubuntu i386, 13.04 and 13.10. Such a speed
is not ok, awfully slow.
When I run two or more the same dd commands simultaneously, I have 1,2
Mb/s for every process.
I have no such problems with the same IO stuff when loading Ubuntu Live
13.10 amd64, i.e. dd reports speed >= 400Mb/s for my SSD disk .
Please help!
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-12-generic 3.11.0-12.19
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic i686
ApportVersion: 2.12.5-0ubuntu2
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: ubuntu 4507 F.... pulseaudio
/dev/snd/controlC1: ubuntu 4507 F.... pulseaudio
/dev/snd/controlC0: ubuntu 4507 F.... pulseaudio
CasperVersion: 1.336ubuntu1
Date: Sat Dec 28 15:56:33 2013
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
MachineType: To be filled by O.E.M. To be filled by O.E.M.
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_US
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent
file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet
splash -- maybe-ubiquity
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.11.0-12-generic N/A
linux-backports-modules-3.11.0-12-generic N/A
linux-firmware 1.116
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/10/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1708
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: M5A99FX PRO R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1708:bd04/10/2013:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A99FXPROR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-bug i386 saucy
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https://bugs.launchpad.net/bugs/1264707
Title:
IO limit 1.2 MB/s for 32bit ubuntu
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