IO limit 1.2 MB/s for 32bit ubuntu (PAE, 32 Gb RAM)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Low
|
Unassigned |
Bug Description
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
^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.
WORKAROUNDs:
+ turn off ACPI services, see more at https:/
+ Use the amd64 version
+ Use CONFIG_HIGHMEM4G=y
+ CONFIG_VMSPLIT_1G=y
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.11.0-12-generic i686
ApportVersion: 2.12.5-0ubuntu2
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
/dev/snd/
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/
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.
RelatedPackageV
linux-
linux-
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.
dmi.board.name: M5A99FX PRO R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: To be filled by O.E.M.
dmi.product.
dmi.sys.vendor: To be filled by O.E.M.
description: | updated |
tags: | added: bios-outdated-2201 |
Changed in linux (Ubuntu): | |
importance: | Undecided → Low |
status: | Confirmed → Incomplete |
summary: |
- IO limit 1.2 MB/s for 32bit ubuntu + IO limit 1.2 MB/s for 32bit ubuntu (after running lightgm service) |
summary: |
- IO limit 1.2 MB/s for 32bit ubuntu (after running lightgm service) + IO limit 1.2 MB/s for 32bit ubuntu (after running lightdm service) |
no longer affects: | lightdm |
summary: |
- IO limit 1.2 MB/s for 32bit ubuntu (after running lightdm service) + IO limit 1.2 MB/s for 32bit ubuntu (ACPI issues) |
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
This change was made by a bot.