[Bug 559179] [NEW] Cache issue with 10.04

[Jaakan Shorter]

Public bug reported:

My current HTPC use to always be around 50% ram used since I built it
almost 2 years ago and now it hovering around 95% to 99%. I really
notice this on my laptop before I upgraded my ram from 1G to 4Gb.
Something has changed with 10.04.

there seems to be an issue system wide with caching

mythfrontend for my only uses 20% of my ram
mythbackend 2.4%
mysql 1.5%
Xorg 4%

my laptop
Code:

             total       used       free     shared    buffers     cached
Mem:       3928280    1838056    2090224          0     119328    1004872
-/+ buffers/cache:     713856    3214424
Swap:      2000084          0    2000084

my Mythtv HTPC
Code:

             total       used       free     shared    buffers     cached
Mem:       2056768    2039956      16812          0      64708     679500
-/+ buffers/cache:    1295748     761020
Swap:      2000052          0    2000052

look at how cache is used in 9.10
upgrade to 10.04
look at how cache is used

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-19-generic 2.6.32-19.28
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  jaakan     1664 F.... pulseaudio
 /dev/snd/pcmC0D0p:   jaakan     1664 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xc0000000 irq 16'
   Mixer name	: 'SigmaTel STAC9200'
   Components	: 'HDA:14f12c06,14f1000f,00100000 HDA:83847690,102801f5,00102201'
   Controls      : 6
   Simple ctrls  : 4
Date: Fri Apr  9 08:20:35 2010
HibernationDevice: RESUME=UUID=6afe3826-956f-430e-bd9d-c10c5ce210cc
MachineType: Dell Inc. Vostro   1000
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic root=UUID=99d8c97a-ec1a-4c47-9329-db8d98367aaa ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.33
RfKill:
 
SourcePackage: linux
WifiSyslog:
 
dmi.bios.date: 12/07/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.6.3
dmi.board.name: 0WY383
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr2.6.3:bd12/07/2007:svnDellInc.:pnVostro1000:pvrNotSpecified:rvnDellInc.:rn0WY383:rvr:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Vostro   1000
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug kconfig lucid needs-upstream-testing regression-potential

-- 
Cache issue with 10.04
https://bugs.launchpad.net/bugs/559179
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