[i845] xorg intel driver 2.7.99 36% slower than 2.7.0 on i845
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xf86-video-intel |
Fix Released
|
High
|
|||
xserver-xorg-video-intel (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Binary package hint: xorg
GtkPerf from Synaptic measures several video performance characteristics. Results with Karmic Alpha 1 on i845 video on IBM ThinkCentre and i830 video on IBM Thinkpad R31 significant performance slowdown of driver 2.7.99 vs. 2.7.0, and for that matter VESA:
i845 2.7.99 42 seconds vs. 2.7.0 31 seconds, 2.799 being 36% slower
i830 2.7.99 65 seconds vs. 2.7.0 35 seconds, 2.7.99 being 90% slower
i845 2.7.99 42 seconds vs. VESA 27 seconds, 2.7.99 being 58% slower
Attached should be ubuntu-bug -p xorg data from the ThinkCentre i845
Also attached spreadsheet with details on which performance measures were worst
Linux version 2.6.30-5-generic (buildd@rothera) (gcc version 4.4.1 (Ubuntu 4.4.0-3ubuntu3) ) #6-Ubuntu SMP Mon May 11 19:56:30 UTC 2009
2.7.0 came with the Alternate CD. 2.7.99 was installed from "Edgers" as described in the Ubuntu Forums Intel Peformance Guidelines.
ProblemType: Bug
Architecture: i386
Date: Sat May 30 20:30:30 2009
DistroRelease: Ubuntu 9.10
Package: xorg 1:7.4~5ubuntu20
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
RelatedPackageV
xserver-xorg 1:7.4~5ubuntu20
libgl1-mesa-glx 7.5.0~git200905
libdrm2 2.4.11+
xserver-
xserver-
SourcePackage: xorg
Uname: Linux 2.6.30-5-generic i686
system:
distro: Ubuntu
architecture: i686kernel: 2.6.30-5-generic
Related branches
affects: | xorg (Ubuntu) → xserver-xorg-video-intel (Ubuntu) |
summary: |
- xorg intel driver 2.7.99 36% slower than 2.7.0 on i845 + [i845] xorg intel driver 2.7.99 36% slower than 2.7.0 on i845 |
Changed in xserver-xorg-video-intel: | |
status: | Unknown → Confirmed |
Changed in xserver-xorg-video-intel: | |
status: | Confirmed → In Progress |
Changed in xserver-xorg-video-intel: | |
status: | In Progress → Fix Released |
tags: | added: karmic |
Changed in xserver-xorg-video-intel: | |
importance: | Unknown → High |
Changed in xserver-xorg-video-intel: | |
importance: | High → Unknown |
Changed in xserver-xorg-video-intel: | |
importance: | Unknown → High |
Latest results from karmic 2.6.30.10.10:
I'm not sure what KMS is for on intel video graphics?
i830 Thinkpad R31 boots to blackscreen. nomodeset in kernel line turns off KMS then boots O.K. but of course KMS is turned off. That's another launchpad bug.
i845 ThinkCentre 2.0 gHz Celeron works O.K. but Noticeably slower than generic video driver vesa, for example GtkPerf from Synaptic:
06/24/09 karmic 2.6.30.10.10 i845___ ______ vesa__KMS=1__ KMS_slower _______ _______ _ 0.22 0.26 18% _______ ____ 5.55 9.25 67% ______ 3.84 5.52 44% _______ ____ 0.85 2.5 194% _______ ___ 0.82 3.97 384% _______ __ 0.95 2.47 160% _______ ___ 0.60 1.10 83% _______ ____ 0.87 1.35 55% Add-text_ _____ 1.93 1.83 -5% Scroll_ _______ _ 1.29 1.97 53% Lines__ ____ 2.11 1.83 -13% Circles_ ___ 4.15 9.81 136% Text___ ____ 4.77 5.53 16% Pixbufs_ ___ 0.26 0.51 96%
karmic.
Entry__
ComboBox_
ComboBoxEntry_
SpinButton_
ProgressBar_
ToggleButton_
CheckButton_
RadioButton_
TextView-
TextView-
DrawingArea-
DrawingArea-
DrawingArea-
DrawingArea-
Total_time_ _______ _____ 28.24 47.92 70%
Progress bar in particular visibly drags across the screen....
? Thanks, Jerry