Public bug reported:
A slight but noticable drop in graphics performance can be observed
after a single suspend/resume cycle in the latest -proposed kernel in
Ubuntu Lucid (2.6.32-26). I haven't tested if the problem is more
general, or if it only applies to graphics operations.
glxgears numbers before first suspend:
18494 frames in 5.0 seconds
16493 frames in 5.0 seconds
16521 frames in 5.0 seconds
17073 frames in 5.0 seconds
18495 frames in 5.0 seconds
glxgears again under exactly same conditions after a single suspend/resume:
15517 frames in 5.0 seconds
15672 frames in 5.0 seconds
15684 frames in 5.0 seconds
15687 frames in 5.0 seconds
15680 frames in 5.0 seconds
I know glxgears isn't a proper benchmarking tool, but the point here is
the *relative* decrease in performance. The performance drop is also
noticable when for instance browsing web pages in Firefox.
This is a regression, kernel 2.6.32-25 in Lucid does *not* have this
problem.
Using nvida driver 195.36.24.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-26-generic 2.6.32-26.46 [modified:
lib/modules/2.6.32-26-generic/kernel/drivers/input/mouse/psmouse.ko]
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-26.46-generic 2.6.32.24+drm33.11
Uname: Linux 2.6.32-26-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: oyvind 1661 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xd9660000 irq 22'
Mixer name : 'IDT 92HD81B1C5'
Components : 'HDA:111d76d5,1028040b,00100104'
Controls : 14
Simple ctrls : 9
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xd3080000 irq 16'
Mixer name : 'Nvidia ID b'
Components : 'HDA:10de000b,10de0101,00100100'
Controls : 0
Simple ctrls : 0
Card1.Amixer.values:
Date: Sat Nov 6 20:40:07 2010
HibernationDevice: RESUME=UUID=983c04ad-2482-46a9-8cea-257feca98e75
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: Dell Inc. Latitude E6510
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-26-generic
root=UUID=4626d257-a6a0-44b7-98e2-fd554a191b29 ro quiet splash
ProcEnviron:
LANGUAGE=nb_NO:nb:en
PATH=(custom, user)
LANG=nb_NO.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
dmi.bios.date: 08/10/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0N5KHN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA05:bd08/10/2010:svnDellInc.:pnLatitudeE6510:pvr0001:rvnDellInc.:rn0N5KHN:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6510
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid needs-upstream-testing regression-proposed
resume suspend
--
Performance drop after suspend/resume cycle
https://bugs.launchpad.net/bugs/671932
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