Výzkumníci ukazují, jak mohou otevřené tunely a IPv6 Extension Headers synchronizovat pakety do krátkých provozních špiček. V kontrolovaném experimentu naměřili přes 180násobnou koncentraci paketového toku vůči průměrné rychlosti odesílání — nikoli 180násobné zvětšení objemu dat. Článek obsahuje metodiku, limity měření i mitigace pro GRE, IPIP a další tunely.
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01:00.0 VGA compatible controller: nVidia Corporation Quadro NVS 290 (rev a1)Stahnul jsem a prelozil drivery NVIDIA-Linux-x86_64-169.12-pkg2.run driver se nainstaluje, pouzije, ale kdyz mu zadam twinview do konfiguraku:
Section "Device"
#Driver "intel"
Identifier "Generic Video Card"
Driver "nvidia"
#the TwinView stuff
Option "TwinView"
Option "MetaModes" "1280x1024,1280x1024; 1280x1024; 1024x768,1024x768; 1024x768; 800x600,800x600; 800x600"
Option "TwinViewOrientation" "RightOf"
Option "SecondMonitorHorizSync" "UseEdidFreqs"
Option "SecondMonitorVertRefresh" "UseEdidFreqs"
EndSection
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 (==) NVIDIA(0): RGB weight 888 (==) NVIDIA(0): Default visual is TrueColor (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) (**) NVIDIA(0): Option "TwinView" (**) NVIDIA(0): Option "TwinViewOrientation" "RightOf" (**) NVIDIA(0): Option "SecondMonitorHorizSync" "UseEdidFreqs" (**) NVIDIA(0): Option "SecondMonitorVertRefresh" "UseEdidFreqs" (**) NVIDIA(0): Option "MetaModes" "1280x1024,1280x1024; 1280x1024; 1024x768,1024x768; 1024x768; 800x600,800x600; 800x600" (**) NVIDIA(0): Enabling RENDER acceleration (**) NVIDIA(0): TwinView enabled (II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is (II) NVIDIA(0): enabled. (II) NVIDIA(0): NVIDIA GPU Quadro NVS 290 (G86GL) at PCI:1:0:0 (GPU-0) (--) NVIDIA(0): Memory: 262144 kBytes (--) NVIDIA(0): VideoBIOS: 60.86.5b.00.22 (II) NVIDIA(0): Detected PCI Express Link width: 16X (--) NVIDIA(0): Interlaced video modes are supported on this GPU (--) NVIDIA(0): Connected display device(s) on Quadro NVS 290 at PCI:1:0:0: (--) NVIDIA(0): Samsung SyncMaster (DFP-0) (--) NVIDIA(0): Samsung SyncMaster (DFP-0): 165.0 MHz maximum pixel clock (--) NVIDIA(0): Samsung SyncMaster (DFP-0): Internal Single Link TMDS (WW) NVIDIA(0): TwinView requested, but only 1 display devices found. (II) NVIDIA(0): Assigned Display Device: DFP-0 (WW) NVIDIA(0): Invalid display device in Mode Description "1280x1024" (WW) NVIDIA(0): Not using mode description "1280x1024"; unable to map to (WW) NVIDIA(0): display device (WW) NVIDIA(0): Invalid display device in Mode Description "1024x768" (WW) NVIDIA(0): Not using mode description "1024x768"; unable to map to (WW) NVIDIA(0): display device (WW) NVIDIA(0): Invalid display device in Mode Description "800x600" (WW) NVIDIA(0): Not using mode description "800x600"; unable to map to display (WW) NVIDIA(0): device (II) NVIDIA(0): Validated modes: (II) NVIDIA(0): "1280x1024,1280x1024" (II) NVIDIA(0): "1280x1024" (II) NVIDIA(0): "1024x768,1024x768" (II) NVIDIA(0): "1024x768" (II) NVIDIA(0): "800x600,800x600" (II) NVIDIA(0): "800x600" (II) NVIDIA(0): Virtual screen size determined to be 1280 x 1024 (--) NVIDIA(0): DPI set to (85, 86); computed from "UseEdidDpi" X config (--) NVIDIA(0): option (==) NVIDIA(0): Enabling 32-bit ARGB GLX visuals. (--) Depth 24 pixmap format is 32 bpp (II) do I need RAC? No, I don't.Z te karty leze jen jeden konektor, ktery je rozvetven na 2 DVI. Nevite nekdo co s tim? Akcelerace na tom jednom monitoru co je rozpoznan funguje... Diky.
cijoml@optiplex:~$ nvidia-settings --query=all
Attributes for optiplex:0.0:
Attribute 'DigitalVibrance' (optiplex:0.0; display device: DFP-0): 0.
The valid values for 'DigitalVibrance' are in the range 0 - 1023 (inclusive).
'DigitalVibrance' is display device specific.
'DigitalVibrance' can use the following target types: X Screen, GPU.
Attribute 'BusType' (optiplex:0.0): 2.
The valid values for 'BusType' are in the range 0 - 3 (inclusive).
'BusType' is a read-only attribute.
'BusType' can use the following target types: X Screen, GPU.
Attribute 'BusRate' (optiplex:0.0): 16.
The valid values for 'BusRate' are in the range 1 - 16 (inclusive).
'BusRate' is a read-only attribute.
'BusRate' can use the following target types: X Screen, GPU.
Attribute 'VideoRam' (optiplex:0.0): 262144.
'VideoRam' is an integer attribute.
'VideoRam' is a read-only attribute.
'VideoRam' can use the following target types: X Screen, GPU.
Attribute 'Irq' (optiplex:0.0): 16.
'Irq' is an integer attribute.
'Irq' is a read-only attribute.
'Irq' can use the following target types: X Screen, GPU.
Attribute 'OperatingSystem' (optiplex:0.0): 0.
The valid values for 'OperatingSystem' are in the range 0 - 2 (inclusive).
'OperatingSystem' is a read-only attribute.
'OperatingSystem' can use the following target types: X Screen, GPU.
Attribute 'SyncToVBlank' (optiplex:0.0): 0.
'SyncToVBlank' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'SyncToVBlank' can use the following target types: X Screen.
Attribute 'AllowFlipping' (optiplex:0.0): 1.
'AllowFlipping' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'AllowFlipping' can use the following target types: X Screen.
Attribute 'LogAniso' (optiplex:0.0): 0.
The valid values for 'LogAniso' are in the range 0 - 4 (inclusive).
'LogAniso' can use the following target types: X Screen.
Attribute 'FSAA' (optiplex:0.0): 0.
Valid values for 'FSAA' are: 0, 1, 5, 7, 8, 10 and 12.
'FSAA' can use the following target types: X Screen.
Attribute 'TextureSharpen' (optiplex:0.0): 0.
'TextureSharpen' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'TextureSharpen' can use the following target types: X Screen.
Attribute 'TwinView' (optiplex:0.0): 0.
'TwinView' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'TwinView' is a read-only attribute.
'TwinView' can use the following target types: X Screen.
Attribute 'ConnectedDisplays' (optiplex:0.0): 0x00010000.
'ConnectedDisplays' is a bitmask attribute.
'ConnectedDisplays' is a read-only attribute.
'ConnectedDisplays' can use the following target types: X Screen, GPU.
Attribute 'EnabledDisplays' (optiplex:0.0): 0x00010000.
'EnabledDisplays' is a bitmask attribute.
'EnabledDisplays' is a read-only attribute.
'EnabledDisplays' can use the following target types: X Screen, GPU.
Attribute 'AssociatedDisplays' (optiplex:0.0): 0x00010000.
'AssociatedDisplays' is a bitmask attribute.
'AssociatedDisplays' can use the following target types: X Screen.
Attribute 'Depth30Allowed' (optiplex:0.0): 0.
'Depth30Allowed' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'Depth30Allowed' is a read-only attribute.
'Depth30Allowed' can use the following target types: X Screen, GPU.
Attribute 'ForceGenericCpu' (optiplex:0.0): 0.
'ForceGenericCpu' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'ForceGenericCpu' can use the following target types: X Screen.
Attribute 'GammaCorrectedAALines' (optiplex:0.0): 0.
'GammaCorrectedAALines' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'GammaCorrectedAALines' can use the following target types: X Screen.
Attribute 'CursorShadow' (optiplex:0.0): 0.
'CursorShadow' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'CursorShadow' can use the following target types: X Screen.
Attribute 'CursorShadowXOffset' (optiplex:0.0): 4.
The valid values for 'CursorShadowXOffset' are in the range 0 - 32 (inclusive).
'CursorShadowXOffset' can use the following target types: X Screen.
Attribute 'CursorShadowYOffset' (optiplex:0.0): 2.
The valid values for 'CursorShadowYOffset' are in the range 0 - 32 (inclusive).
'CursorShadowYOffset' can use the following target types: X Screen.
Attribute 'CursorShadowAlpha' (optiplex:0.0): 64.
The valid values for 'CursorShadowAlpha' are in the range 0 - 254 (inclusive).
'CursorShadowAlpha' can use the following target types: X Screen.
Attribute 'CursorShadowRed' (optiplex:0.0): 0.
The valid values for 'CursorShadowRed' are in the range 0 - 255 (inclusive).
'CursorShadowRed' can use the following target types: X Screen.
Attribute 'CursorShadowGreen' (optiplex:0.0): 0.
The valid values for 'CursorShadowGreen' are in the range 0 - 255 (inclusive).
'CursorShadowGreen' can use the following target types: X Screen.
Attribute 'CursorShadowBlue' (optiplex:0.0): 0.
The valid values for 'CursorShadowBlue' are in the range 0 - 255 (inclusive).
'CursorShadowBlue' can use the following target types: X Screen.
Attribute 'FSAAAppControlled' (optiplex:0.0): 1.
'FSAAAppControlled' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'FSAAAppControlled' can use the following target types: X Screen.
Attribute 'LogAnisoAppControlled' (optiplex:0.0): 1.
'LogAnisoAppControlled' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'LogAnisoAppControlled' can use the following target types: X Screen.
Attribute 'RefreshRate' (optiplex:0.0; display device: DFP-0): 60.02 Hz.
'RefreshRate' is an integer attribute.
'RefreshRate' is a read-only attribute.
'RefreshRate' is display device specific.
'RefreshRate' can use the following target types: X Screen, GPU.
Attribute 'InitialPixmapPlacement' (optiplex:0.0): 1.
The valid values for 'InitialPixmapPlacement' are in the range 0 - 4 (inclusive).
'InitialPixmapPlacement' can use the following target types: X Screen.
Attribute 'DynamicTwinview' (optiplex:0.0): 1.
'DynamicTwinview' is an integer attribute.
'DynamicTwinview' is a read-only attribute.
'DynamicTwinview' can use the following target types: X Screen.
Attribute 'MultiGpuDisplayOwner' (optiplex:0.0): 0.
'MultiGpuDisplayOwner' is an integer attribute.
'MultiGpuDisplayOwner' is a read-only attribute.
'MultiGpuDisplayOwner' can use the following target types: X Screen.
Attribute 'GPUScaling' (optiplex:0.0; display device: DFP-0): 2,1.
Valid values for 'GPUScaling' are: [1, 2 and 3], [1 and 2].
'GPUScaling' is display device specific.
'GPUScaling' can use the following target types: X Screen, GPU.
Attribute 'FrontendResolution' (optiplex:0.0; display device: DFP-0): 1280,1024.
'FrontendResolution' is a packed integer attribute.
'FrontendResolution' is a read-only attribute.
'FrontendResolution' is display device specific.
'FrontendResolution' can use the following target types: X Screen, GPU.
Attribute 'BackendResolution' (optiplex:0.0; display device: DFP-0): 1280,1024.
'BackendResolution' is a packed integer attribute.
'BackendResolution' is a read-only attribute.
'BackendResolution' is display device specific.
'BackendResolution' can use the following target types: X Screen, GPU.
Attribute 'FlatpanelNativeResolution' (optiplex:0.0; display device: DFP-0): 1280,1024.
'FlatpanelNativeResolution' is a packed integer attribute.
'FlatpanelNativeResolution' is a read-only attribute.
'FlatpanelNativeResolution' is display device specific.
'FlatpanelNativeResolution' can use the following target types: X Screen, GPU.
Attribute 'FlatpanelBestFitResolution' (optiplex:0.0; display device: DFP-0): 1280,1024.
'FlatpanelBestFitResolution' is a packed integer attribute.
'FlatpanelBestFitResolution' is a read-only attribute.
'FlatpanelBestFitResolution' is display device specific.
'FlatpanelBestFitResolution' can use the following target types: X Screen, GPU.
Attribute 'GPUScalingActive' (optiplex:0.0; display device: DFP-0): 0.
'GPUScalingActive' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'GPUScalingActive' is a read-only attribute.
'GPUScalingActive' is display device specific.
'GPUScalingActive' can use the following target types: X Screen, GPU.
Attribute 'DFPScalingActive' (optiplex:0.0; display device: DFP-0): 0.
'DFPScalingActive' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'DFPScalingActive' is a read-only attribute.
'DFPScalingActive' is display device specific.
'DFPScalingActive' can use the following target types: X Screen, GPU.
Attribute 'FSAAAppEnhanced' (optiplex:0.0): 0.
'FSAAAppEnhanced' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'FSAAAppEnhanced' can use the following target types: X Screen.
Attribute 'GPUErrors' (optiplex:0.0): 0.
'GPUErrors' is an integer attribute.
'GPUErrors' is a read-only attribute.
'GPUErrors' can use the following target types: X Screen.
Attribute 'GvoSupported' (optiplex:0.0): 0.
'GvoSupported' is a boolean attribute; valid values are: 1 (on/true) and 0 (off/false).
'GvoSupported' is a read-only attribute.
'GvoSupported' can use the following target types: X Screen.
Attribute 'GPUCoreTemp' (optiplex:0.0): 62.
'GPUCoreTemp' is an integer attribute.
'GPUCoreTemp' is a read-only attribute.
'GPUCoreTemp' can use the following target types: X Screen, GPU.
Attribute 'OpenGLImageSettings' (optiplex:0.0): 1.
The valid values for 'OpenGLImageSettings' are in the range 0 - 3 (inclusive).
'OpenGLImageSettings' can use the following target types: X Screen.
Attribute 'XVideoTextureBrightness' (optiplex:0.0): 0.
The valid values for 'XVideoTextureBrightness' are in the range -512 - 511 (inclusive).
'XVideoTextureBrightness' can use the following target types: X Screen.
Attribute 'XVideoTextureContrast' (optiplex:0.0): 4096.
The valid values for 'XVideoTextureContrast' are in the range 0 - 8191 (inclusive).
'XVideoTextureContrast' can use the following target types: X Screen.
Attribute 'XVideoTextureSyncToVBlank' (optiplex:0.0): 1.
The valid values for 'XVideoTextureSyncToVBlank' are in the range 0 - 1 (inclusive).
'XVideoTextureSyncToVBlank' can use the following target types: X Screen.
Attribute 'XVideoSyncToDisplay' (optiplex:0.0): 0x00010000.
'XVideoSyncToDisplay' is a bitmask attribute.
'XVideoSyncToDisplay' can use the following target types: X Screen.
Attribute 'GPUDefault2DClockFreqs' (optiplex:0.0): 208,100.
'GPUDefault2DClockFreqs' is a packed integer attribute.
'GPUDefault2DClockFreqs' is a read-only attribute.
'GPUDefault2DClockFreqs' can use the following target types: X Screen, GPU.
Attribute 'GPUDefault3DClockFreqs' (optiplex:0.0): 459,400.
'GPUDefault3DClockFreqs' is a packed integer attribute.
'GPUDefault3DClockFreqs' is a read-only attribute.
'GPUDefault3DClockFreqs' can use the following target types: X Screen, GPU.
Attribute 'GPU2DClockFreqs' (optiplex:0.0): 208,100.
The valid values for 'GPU2DClockFreqs' are in the ranges 52 - 416, 25 - 1100 (inclusive).
'GPU2DClockFreqs' can use the following target types: X Screen, GPU.
Attribute 'GPU3DClockFreqs' (optiplex:0.0): 459,400.
The valid values for 'GPU3DClockFreqs' are in the ranges 114 - 918, 100 - 1100 (inclusive).
'GPU3DClockFreqs' can use the following target types: X Screen, GPU.
Attribute 'GPUCurrentClockFreqs' (optiplex:0.0): 459,400.
'GPUCurrentClockFreqs' is a packed integer attribute.
'GPUCurrentClockFreqs' is a read-only attribute.
'GPUCurrentClockFreqs' can use the following target types: X Screen, GPU.
Attribute 'GPUPerfModes' (optiplex:0.0): perf=0, nvclock=208, memclock=100 ; perf=1, nvclock=459, memclock=400
Attribute 'NvidiaDriverVersion' (optiplex:0.0): 169.12
Attribute 'NvControlVersion' (optiplex:0.0): 1.14
Attribute 'GLXServerVersion' (optiplex:0.0): 1.4
Attribute 'GLXClientVersion' (optiplex:0.0): 1.4
Attribute 'OpenGLVersion' (optiplex:0.0): 2.1.2 NVIDIA 169.12
Attribute 'XRandRVersion' (optiplex:0.0): 1.2
Attribute 'XF86VidModeVersion' (optiplex:0.0): 2.2
Attribute 'XvVersion' (optiplex:0.0): 2.2
Attribute 'GPUCurrentPerfMode' (optiplex:0.0): 1.
'GPUCurrentPerfMode' is an integer attribute.
'GPUCurrentPerfMode' is a read-only attribute.
'GPUCurrentPerfMode' can use the following target types: X Screen, GPU.
Attribute 'GPUCurrentPerfLevel' (optiplex:0.0): 1.
'GPUCurrentPerfLevel' is an integer attribute.
'GPUCurrentPerfLevel' is a read-only attribute.
'GPUCurrentPerfLevel' can use the following target types: X Screen, GPU.
Attribute 'GPUAdaptiveClockState' (optiplex:0.0): 1.
'GPUAdaptiveClockState' is an integer attribute.
'GPUAdaptiveClockState' is a read-only attribute.
'GPUAdaptiveClockState' can use the following target types: X Screen, GPU.
Attribute 'GPUPowerSource' (optiplex:0.0): 0.
'GPUPowerSource' is an integer attribute.
'GPUPowerSource' is a read-only attribute.
'GPUPowerSource' can use the following target types: X Screen, GPU.
Tiskni
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