Hi, Gentlemen, Hope this is the right mailing list to ask question regarding Intel graphic performance issue. Please let me know the right mailing list if intel-gfx is not the right one. We have a machine running ubuntu 10.04 (kernel version?2.6.32). The application is simple: It has a display area of 640x480 showing image at about 30Hz rate. The screen resolution is 1024x768. Out side of display area we have some text display. The CPU is intel T3500, i915 chipset for graphics. The problem we have is at this display rate, xorg process is taking up about 25% CPU. ?Is this number normal, or should I expect xorg CPU usage <=5%? We don't have xorg.conf file configured. So I suspect HW acceleration is not used at all. We can wipe out /usr/lib/xorg/modules/drivers/intel_drv.so,?everything is still running, almost the same CPU usage from xorg. The application drawing is through GTK/Cairo. So not sure whether the problem is inside configuration of GTK, Cairo, X or the Intel graphic driver. Any help would be appreciated. Thanks, Guo here is my lspci -nnk output. Attached is the Xorg.0.loog file. Thanks again. 00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07) Kernel driver in use: agpgart-intel Kernel modules: intel-agp 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) Kernel modules: i915 00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07) 00:1a.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 [8086:2937] (rev 03) Kernel driver in use: uhci_hcd 00:1a.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 03) Kernel driver in use: uhci_hcd 00:1a.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 03) Kernel driver in use: uhci_hcd 00:1a.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 03) Kernel driver in use: ehci_hcd 00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03) Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03) Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 03) Kernel driver in use: uhci_hcd 00:1d.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 03) Kernel driver in use: uhci_hcd 00:1d.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 03) Kernel driver in use: uhci_hcd 00:1d.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 03) Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 93) 00:1f.0 ISA bridge [0601]: Intel Corporation ICH9M LPC Interface Controller [8086:2919] (rev 03) Kernel modules: iTCO_wdt 00:1f.2 IDE interface [0101]: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller [8086:2928] (rev 03) Kernel driver in use: ata_piix 00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 03) Kernel modules: i2c-i801 00:1f.5 IDE interface [0101]: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller [8086:292d] (rev 03) Kernel driver in use: ata_piix 01:0c.0 FireWire (IEEE 1394) [0c00]: Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link) [104c:8024] Kernel driver in use: ohci1394 Kernel modules: firewire-ohci, ohci1394 02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 02) Kernel driver in use: r8169 -------------- next part -------------- A non-text attachment was scrubbed... Name: Xorg.0.log Type: application/octet-stream Size: 50736 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120418/feccd1be/attachment-0001.obj>
