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Message #67175
[Bug 1331186] Re: Ubuntu Linux kernel memory leak, cache memory trouble
** Description changed:
As soon as I start Ubuntu 12.04.4 LTS with i386 PAE kernel, 8GB memory, GNU/Linux 3.2.0-64-generic-pae i686,
cache memory area increases a little by a little, and It consumes at last, a few hours later, 5GB memory. User memory left will become 200MB.
I release cache memory by issuing a shell script, cache_release.sh. It
is like that :
#!/bin/bash
/bin/sync
/bin/sync
/bin/sync
/bin/sync
/bin/sync
/sbin/sysctl -w vm.drop_caches=1
/sbin/sysctl -w vm.drop_caches=2
/sbin/sysctl -w vm.drop_caches=3
I registered this shell script to crontab and I issue this script
- command once a hour.
+ command once a ten minutes.
Maybe kernel requires patches.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-64-generic-pae 3.2.0-64.97
ProcVersionSignature: Ubuntu 3.2.0-64.97-generic-pae 3.2.59
Uname: Linux 3.2.0-64-generic-pae i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC665 Analog [ALC665 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: hiroshi 4448 F.... pulseaudio
/dev/snd/controlC0: hiroshi 4448 F.... pulseaudio
/dev/snd/pcmC0D0p: hiroshi 4448 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 57'
Mixer name : 'Realtek ALC665'
Components : 'HDA:10ec0665,1028046e,00100003'
Controls : 26
Simple ctrls : 13
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xcdefc000 irq 17'
Mixer name : 'Nvidia GPU 14 HDMI/DP'
Components : 'HDA:10de0014,10de0101,00100100'
Controls : 24
Simple ctrls : 4
Date: Wed Jun 18 05:27:20 2014
HibernationDevice: RESUME=UUID=02e8790f-b82d-416f-8a25-de64b1bac6e9
InstallationMedia: Ubuntu 12.04 "Precise" - Build i386 LIVE Binary 20120501-03:27
MachineType: Dell Inc. XPS L501X
MarkForUpload: True
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-64-generic-pae root=UUID=1dff47dd-b881-4de7-b290-b74b48753d63 ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-3.2.0-64-generic-pae N/A
linux-backports-modules-3.2.0-64-generic-pae N/A
linux-firmware 1.79.15
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/26/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.vendor: Dell Inc.
dmi.board.version: A08
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A08
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd07/26/2011:svnDellInc.:pnXPSL501X:pvrA08:rvnDellInc.:rn:rvrA08:cvnDellInc.:ct8:cvrA08:
dmi.product.name: XPS L501X
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1331186
Title:
Ubuntu Linux kernel memory leak, cache memory trouble
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
As soon as I start Ubuntu 12.04.4 LTS with i386 PAE kernel, 8GB memory, GNU/Linux 3.2.0-64-generic-pae i686,
cache memory area increases a little by a little, and It consumes at last, a few hours later, 5GB memory. User memory left will become 200MB.
I release cache memory by issuing a shell script, cache_release.sh. It
is like that :
#!/bin/bash
/bin/sync
/bin/sync
/bin/sync
/bin/sync
/bin/sync
/sbin/sysctl -w vm.drop_caches=1
/sbin/sysctl -w vm.drop_caches=2
/sbin/sysctl -w vm.drop_caches=3
I registered this shell script to crontab and I issue this script
command once a ten minutes.
Maybe kernel requires patches.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-64-generic-pae 3.2.0-64.97
ProcVersionSignature: Ubuntu 3.2.0-64.97-generic-pae 3.2.59
Uname: Linux 3.2.0-64-generic-pae i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC665 Analog [ALC665 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: hiroshi 4448 F.... pulseaudio
/dev/snd/controlC0: hiroshi 4448 F.... pulseaudio
/dev/snd/pcmC0D0p: hiroshi 4448 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 57'
Mixer name : 'Realtek ALC665'
Components : 'HDA:10ec0665,1028046e,00100003'
Controls : 26
Simple ctrls : 13
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xcdefc000 irq 17'
Mixer name : 'Nvidia GPU 14 HDMI/DP'
Components : 'HDA:10de0014,10de0101,00100100'
Controls : 24
Simple ctrls : 4
Date: Wed Jun 18 05:27:20 2014
HibernationDevice: RESUME=UUID=02e8790f-b82d-416f-8a25-de64b1bac6e9
InstallationMedia: Ubuntu 12.04 "Precise" - Build i386 LIVE Binary 20120501-03:27
MachineType: Dell Inc. XPS L501X
MarkForUpload: True
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-64-generic-pae root=UUID=1dff47dd-b881-4de7-b290-b74b48753d63 ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-3.2.0-64-generic-pae N/A
linux-backports-modules-3.2.0-64-generic-pae N/A
linux-firmware 1.79.15
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/26/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.vendor: Dell Inc.
dmi.board.version: A08
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A08
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd07/26/2011:svnDellInc.:pnXPSL501X:pvrA08:rvnDellInc.:rn:rvrA08:cvnDellInc.:ct8:cvrA08:
dmi.product.name: XPS L501X
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
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References
