152d:2338 High IO when writing to USB devices
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
High
|
Unassigned |
Bug Description
I am wiping a SATA disk which is attached via USB in an enclosure. I'm running this command:-
root@deep-
Whilst running I note significant IO wait on all cores. This means the desktop becomes very slow and at times completely unresponsive. Applications go grey as they wait and sometimes the mouse cursor doesn't even move.
top - 15:58:04 up 22:34, 5 users, load average: 3.11, 2.54, 2.04
Tasks: 201 total, 1 running, 199 sleeping, 0 stopped, 1 zombie
Cpu0 : 6.2%us, 4.0%sy, 0.0%ni, 51.5%id, 36.8%wa, 0.0%hi, 1.5%si, 0.0%st
Cpu1 : 1.0%us, 6.1%sy, 0.0%ni, 44.9%id, 48.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 8.2%us, 1.4%sy, 0.0%ni, 36.6%id, 53.8%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 2.0%us, 1.0%sy, 0.0%ni, 67.2%id, 29.7%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8058844k total, 7915428k used, 143416k free, 3348052k buffers
Swap: 8267772k total, 12040k used, 8255732k free, 2043248k cached
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-27-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 52'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:14f1506e,
Controls : 27
Simple ctrls : 9
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'
Mixer name : 'ThinkPad EC (unknown)'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Sun Jul 29 14:48:41 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: LENOVO 4287CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/15/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET52WW (1.22 )
dmi.board.
dmi.board.name: 4287CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 4287CTO
dmi.product.
dmi.sys.vendor: LENOVO
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: | added: needs-upstream-testing |
summary: |
- High IO when writing to USB devices + 152d:2338 High IO when writing to USB devices |
description: | updated |
tags: | added: lucid |
tags: | added: kernel-da-key |
Have tried 3.2.24- 030224- generic from kernel. ubuntu. com/~kernel- ppa/mainline/ v3.2.24- precise and get similar results:-
top - 16:15:12 up 7 min, 4 users, load average: 2.82, 1.07, 0.43
Tasks: 194 total, 2 running, 192 sleeping, 0 stopped, 0 zombie
Cpu0 : 7.4%us, 3.0%sy, 0.0%ni, 56.8%id, 31.7%wa, 0.0%hi, 1.1%si, 0.0%st
Cpu1 : 2.0%us, 3.3%sy, 0.0%ni, 89.0%id, 5.7%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 10.2%us, 1.7%sy, 0.0%ni, 40.3%id, 47.8%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 1.7%us, 0.3%sy, 0.0%ni, 9.4%id, 88.6%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8058896k total, 7457592k used, 601304k free, 2974216k buffers
Swap: 8267772k total, 0k used, 8267772k free, 2389896k cached