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SubjectRe: Linux 2.6.39
Date
From
2.6.39 first observations: The framerate jitter in games that seem to  
depend on kernel for low-jitter, like doom 3, is almost completely gone
now. (Tested with latest nvidia driver something 75 something)
I decided to try threadirqs from grub, but that did not work. Looks like
the same error as I get when I tried the rt kernels, which was this one:

http://www.paradoxuncreated.com/tmp/rterror.jpg

Peace Be With You,
Uwaysi.


http://www.paradoxuncreated.com/tmp/.config39

Pentium(R) Dual-Core CPU E5200 @ 2.50GHz

uwaysi@Millennium:~$ lspci -v
00:00.0 Host bridge: nVidia Corporation C55 Host Bridge (rev a2)
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: <access denied>

00:00.1 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:00.2 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:00.3 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: bus master, 66MHz, fast devsel, latency 0

00:00.4 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: bus master, 66MHz, fast devsel, latency 0

00:00.5 RAM memory: nVidia Corporation C55 Memory Controller (rev a2)
Flags: bus master, 66MHz, fast devsel, latency 0

00:00.6 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:00.7 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.0 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.1 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.2 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.3 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.4 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.5 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:01.6 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:02.0 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:02.1 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: bus master, 66MHz, fast devsel, latency 0

00:02.2 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
Flags: 66MHz, fast devsel

00:03.0 PCI bridge: nVidia Corporation C55 PCI Express bridge (rev a1)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=05, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fa000000-feafffff
Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:06.0 PCI bridge: nVidia Corporation C55 PCI Express bridge (rev a1)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=06, subordinate=06, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:07.0 PCI bridge: nVidia Corporation C55 PCI Express bridge (rev a1)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2)
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: <access denied>

00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0
I/O ports at 4f00 [size=128]

00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: 66MHz, fast devsel, IRQ 11
I/O ports at 5000 [size=64]
I/O ports at 6000 [size=64]
Capabilities: <access denied>
Kernel driver in use: nForce2_smbus
Kernel modules: i2c-nforce2

00:0a.2 RAM memory: nVidia Corporation MCP51 Memory Controller 0 (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: 66MHz, fast devsel

00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3)
(prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 20
Memory at f9fff000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: ohci_hcd

00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3)
(prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at f9ffec00 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev a1) (prog-if 8a
[Master SecP PriP])
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
I/O ports at ffa0 [size=16]
Capabilities: <access denied>
Kernel driver in use: pata_amd
Kernel modules: pata_amd
00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev
a1) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
I/O ports at c800 [size=8]
I/O ports at c480 [size=4]
I/O ports at c400 [size=8]
I/O ports at c080 [size=4]
I/O ports at c000 [size=16]
Memory at f9ffd000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: sata_nv
Kernel modules: sata_nv

00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev
a1) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
I/O ports at bc00 [size=8]
I/O ports at b880 [size=4]
I/O ports at b800 [size=8]
I/O ports at b480 [size=4]
I/O ports at b400 [size=16]
Memory at f9ffc000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: sata_nv
Kernel modules: sata_nv

00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) (prog-if
01 [Subtractive decode])
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=08, subordinate=08, sec-latency=32
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: feb00000-febfffff
Capabilities: <access denied>
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev
a2)
Subsystem: Micro-Star International Co., Ltd. Device 7380
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
Memory at f9ff8000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel

00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 380c
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at f9ff7000 (32-bit, non-prefetchable) [size=4K]
I/O ports at b080 [size=8]
Capabilities: <access denied>
Kernel driver in use: forcedeth
Kernel modules: forcedeth

01:00.0 PCI bridge: nVidia Corporation NF200 PCIe 2.0 switch for
mainboards (rev a2) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=01, secondary=02, subordinate=05, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fa000000-feafffff
Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
02:00.0 PCI bridge: nVidia Corporation NF200 PCIe 2.0 switch for
mainboards (rev a2) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fa000000-feafffff
Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
02:02.0 PCI bridge: nVidia Corporation NF200 PCIe 2.0 switch for
mainboards (rev a2) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=04, subordinate=04, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

02:03.0 PCI bridge: nVidia Corporation NF200 PCIe 2.0 switch for
mainboards (rev a2) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=05, subordinate=05, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

03:00.0 VGA compatible controller: nVidia Corporation GT200 [GeForce GTX
280] (rev a1) (prog-if 00 [VGA controller])
Subsystem: eVga.com. Corp. Device 1280
Flags: bus master, fast devsel, latency 0, IRQ 19
Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at fa000000 (64-bit, non-prefetchable) [size=32M]
I/O ports at dc00 [size=128]
[virtual] Expansion ROM at fea80000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia, nvidiafb
08:09.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire
II(M)] IEEE 1394 OHCI Controller (rev c0) (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. Device 380d
Flags: bus master, medium devsel, latency 32, IRQ 10
Memory at febff800 (32-bit, non-prefetchable) [size=2K]
I/O ports at ec00 [size=128]
Capabilities: <access denied>


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