Re: Gnome Shell performance degrades over time

[Evandro Giovanini <efgiovanini gmail com>]

Do you have issues with other OpenGL apps or window managers?

---
Evandro

Em Ter, 2011-11-01 às 17:22 +0100, Alessandro Crismani escreveu:
> Hi everybody,
> 
> I've been using Gnome Shell for a long time know. My Laptop is a Lenovo T420s, 
> which comes with an integrated HD3000 Sandy Bridge (SNB) graphic adapter and a 
> i5 2520 CPU.
> 
> Lately, the performance of the Shell has increased and going to activities is 
> smooth, compared to old times where SNB was performing awful. However, after 
> some time the scaling effect "gets corrupted" and slows down. It seems like 
> less frames are shown and going to the activity view becomes a frustrating 
> experience, hurting my concentration. This happens even if I don't use the 
> laptop and leave it idle.
> 
> I've tried many combinations of software to see if something solved it. More 
> particularly, I've tried all the possible combinations between (running Arch 
> Linux, if that matetrs):
> 
> Kernel 3.0.x (where x was the stable minor version at different points in 
> time)
> Kernel 3.1.rcx
> Kernel 3.1.0
> 
> Mesa 7.10.4
> Mesa 7.11.0
> Mesa from the master tree as of last week (and some other older snapshots)
> 
> xf86-video-intel 2.15
> xf86-video-intel 2.16
> xf86-video-intel from the master tree as of last week
> 
> No combinations were found to work reliably after some time. In particular, if 
> I leave the laptop idle without screen-lock or suspend enabled, when I come 
> back the shell is slower than when I left.
> 
> Is this a known behaviour. Does anyone else see this on Sandy Bridge equipped 
> laptops or is it only me?
> 
> Last, but more important, how can I help debugging this? I've got no idea 
> about which logs might be useful: memory and CPU are under control both when 
> animations are fluid and when they are "corrupted". I am enclosing my lspci as 
> a starting point:
> 
> alessandro at alessandro-thinky in ~ 
> $ lspci
> 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family 
> DRAM Controller (rev 09)
> 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core 
> Processor Family Integrated Graphics Controller (rev 09)
> 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family 
> MEI Controller #1 (rev 04)
> 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network 
> Connection (rev 04)
> 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced 
> Host Controller #2 (rev 04)
> 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High 
> Definition Audio Controller (rev 04)
> 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root 
> Port 1 (rev b4)
> 00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root 
> Port 2 (rev b4)
> 00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root 
> Port 4 (rev b4)
> 00:1c.4 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root 
> Port 5 (rev b4)
> 00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced 
> Host Controller #1 (rev 04)
> 00:1f.0 ISA bridge: Intel Corporation 6 Series Chipset Family LPC Controller 
> (rev 04)
> 00:1f.2 SATA controller: Intel Corporation 6 Series Chipset Family 6 port SATA 
> AHCI Controller (rev 04)
> 00:1f.3 SMBus: Intel Corporation 6 Series Chipset Family SMBus Controller (rev 
> 04)
> 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 
> 2c)
> 05:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 04)
> 0d:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 
> 04)
> 
> 
> Thanks to anybody who has even the slightest idea on what is going on.
> Cheers,
> Alessandro
> 
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