VMDirectPath: How is Works
{"Image DocumentName": "VMDirectPath: How is Works", "Image ImageDescription": "Dynamic VIC device. Config: Used by PCI mgmt layer. Mgmt Bar: Used by Vmkernel and PTS. Data Bar : Vmxnet3 compliant Rings and Registers. Vmxnet3. OS PCI. subsystem. Control Path. Emulation <-> PT transitions. Port Events. PCIe events. VM. Vmxnet3 Driver. Ethernet Device Driver. Cisco DVS. Data Path. There are several components I would like to introduce under VMware VM-FEX architecture. Leverage ESX native driver \u2013 VMXNET3 and DirectPath I/O feature with user configurable parameters such as RQ/TQ number, available interrupt and ring size. Depends on the type of Guest OS and its configuration such as enable RSS or not, will have different recommendation. A dedicate Cisco DVS will be installed on each ESX host through the form of vib file and its main purpose is to overwrite the default DVS function and enable the VM traffic to bypass hypervisor stack. As mentioned in previous slides, in emulation mode, VM traffic would still pass-through the hypervisor stack but offload the policy management piece to the bridge controller hardware. Whereas, in bypass mode, the VM traffic complete bypass the hypervisor stack and eliminate additional layer of memory copy. - Dynamic vNIC device is configured through UCSM Service Profile and present to the host OS as individual PCI device, however only the virtual machine interface would leave dynamic interface.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}