Click on “Device Manager” from that list. Search for the Sound driver from the device list, right click on it and then select “Uninstall”. On the un-installation window, if you have an option: “Delete the driver software for this device” you may select that and then remove the corrupted drivers from the computer. Click Create a new port. Select Local Port for Type of port. In the Port Name box, type the path to the printer in the following format, where server is the name of the print server and printer is the share name of the printer (e.g. Server printer). Select the printer model and driver. Virtual COM port (VCP) drivers cause the USB device to appear as an additional COM port available to the PC. Application software can access the USB device in the same way as it would access a standard COM port. This software is provided by Future Technology Devices International Limited “as is” and any express or implied warranties. Apart from updating your PCI Drivers, installing a Driver Update Tool gives: Up to 3 times faster internet connection and download speeds; Better PC performance for games and audio applications; Smooth-running of all your PC devices such as printers, scanners etc. Better all-round performance of your PC due to automatic driver updates which will.
Paravirtualized drivers for kvm/Linux
- Virtio was chosen to be the main platform for IO virtualization in KVM
- The idea behind it is to have a common framework for hypervisors for IO virtualization
- More information (although not uptodate) can be found here
- At the moment network/block/balloon devices are supported for kvm
- The host implementation is in userspace - qemu, so no driver is needed in the host.
The Spultronix DASH7 product line is the new age of driver/vehicle communication and data acquisition. Designed with the driver in mind and able to withstand.
How to use Virtio
- Get kvm version >= 60
- Get Linux kernel with virtio drivers for the guest
- Get Kernel >= 2.6.25 and activate (modules should also work, but take care of initramdisk)
- CONFIG_VIRTIO_PCI=y (Virtualization -> PCI driver for virtio devices)
- CONFIG_VIRTIO_BALLOON=y (Virtualization -> Virtio balloon driver)
- CONFIG_VIRTIO_BLK=y (Device Drivers -> Block -> Virtio block driver)
- CONFIG_VIRTIO_NET=y (Device Drivers -> Network device support -> Virtio network driver)
- CONFIG_VIRTIO=y (automatically selected)
- CONFIG_VIRTIO_RING=y (automatically selected)
- you can safely disable SATA/SCSI and also all other nic drivers if you only use VIRTIO (disk/nic)
- Get Kernel >= 2.6.25 and activate (modules should also work, but take care of initramdisk)
- As an alternative one can use a standard guest kernel for the guest > 2.6.18 and make use sync backward compatibility option
- Backport and instructions can be found in kvm-guest-drivers-linux.git
- Use virtio-net-pci device for the network devices (or model=virtio for old -net..-net syntax) and if=virtio for disk
- Example
- -hd[ab] for disk won't work, use -drive
- Disk will show up as /dev/vd[a-z][1-9], if you migrate you need to change 'root=' in Lilo/GRUB config
- At the moment the kernel modules are automatically loaded in the guest but the interface should be started manually (dhclient/ifconfig)
- Currently performance is much better when using a host kernel configured with CONFIG_HIGH_RES_TIMERS. Another option is use HPET/RTC and -clock= qemu option.
- Expected performance
- Performance varies from host to host, kernel to kernel
- On my laptop I measured 1.1Gbps rx throughput using 2.6.23, 850Mbps tx.
- Ping latency is 300-500 usec
- Enjoy, more to come :)
How to use get high performance with Virtio
- get the latest drop from dpdk.org
- add the librte_pmd_virtio
- Example
Drivers Vi-pec Port Devices Terminal