virtio

installation exampleDnf install terminator upgrade vlc gradle sbt thunderbird subversion java scala git gcc-c ++ vim inxi qt-creator VirtualBox freemind meld kdiff kget smplayer synergy cherrytree zsh curl upgrade-pinyin redhat-lsb tmux util -linux-user wine grub-customizer plymouth uth-theme-solar clisp glances htop gwenview terminology libreoffice # A very useful configuration for oh-my-zsh install zshSh-c "$ (curl-fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/ins

this articleTest packet loss in the virtual environment First experiment:IperfTest whether packet loss occurs. Iperf (Iperf is a network performance testing tool, that is, the network speed test in LINUX), the two generotors start to fill the traffic at full speed. Then we start to calculate the number of packet loss at each point in Figure 1 based on the statistical information. The result is shown in: Because of the different configurations in Table 1, the seven configurations from C1 to C7

a packet header of 50 bytes. Refer to this article Test packet loss in the virtual environment First experiment:IperfTest whether packet loss occurs. Iperf (Iperf is a network performance testing tool, that is, the network speed test in LINUX), the two generotors start to fill the traffic at full speed. Then we start to calculate the number of packet loss at each point in Figure 1 based on the statistical information. The result is shown in: Because of the different configurations in Table 1,

1. Get Network card informationunder Windows Enter cmd, enter " typeperf-qx | find "Network Interface" | find "Bytes" > C:\network.txt"Then it will be under the C drive.generate Network.txt files, open files in which you can search for network interface performance-related parameters, and use these performance counter paths to get related performance values. (This is similar to monitoring IIS)650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/74/CA/wKioL1YpoSqQm7-qAAXdj1jGf_4994.jpg "tit

Opennebula hotPlug disk or NIC network retrieval keywords (network search keywords)208.117.233.122Virsh Attach Disk VirtioKVM Attach DiskVirsh Attach DiskServerfault.comServer Fault is a question and answer site for professional system and network administratorsAdding Virtio block devices at runtime in Libvirt KVMVirsh Edit Virtual machine instance,guest domain systemhttp://archives.opennebula.org/documentation:archives:rel4.2:kvmghttp://kumu-linux.gi

. Except that the nat network is a bit problematic (in the first attempt, the NIC of the virtual machine is changed to virtio-net, and then it is done again by wiki). every time, you always need to manually dhcpcd. However, my partitions are not very good. I cannot put my LFS inside the archlinux partition. it is better to have a separate partition and use the mbr partition table. So I want to reinstall archlinux. the second time, of course, I am unwi

This note summarizes articles from other places on Microsoft Windows images for OpenStack creation, along with some fir St Hand experience. The whole process of creating Windows $ and Windows images fully usable on OpenStack instances is described there. PrerequisiteTo achieve the creation of a qcow2 Windows image for OpenStack, we need the following ISO images: An ISO image of the installation DVD for all OSes This we wish to use in OpenStack. These ISOs can usually is downloaded from

while. I recommend to read some articles like this one. Qemu-system-aarch64-machine virt-cpu cortex-a57-nographic-smp 1-m 512-kernel linux-initrd initrd.gz--append "early PRINTK console=ttyama0 root=/dev/sda1 "-netdev user,id=eth0-device virtio-net-device,netdev=eth0-redir tcp:2222::22- Drive If=none,file=ubuntu.qcow2,id=hd0-device virtio-blk-device,drive=hd0 During above installation, flash boot would be

time=50.8 ms 4. Create a virtual machine Create a virtual machine (Guest) by virt the virtual machine management software. Upload 2 installation images to Server:u1204.iso, Xp.iso Placed under the/home/conan/os directory. 1) Create GUEST1, Ubuntu 64-bit LTS 12.04 version (command line, no visual interface) Mount the U1204.iso file in a directory~ sudo mount-o loop/home/conan/os/u1204.iso/home/conan/os/ubuntu~ Ls/home/conan/os/ubuntuBoot dists EFI isolinux pics preseed UbuntuCdromupgrade doc ins

types of network cards are optional: AMD pcnet PCI II (am79c970a); AMD pcnet FAST III (am79c973, the default); Intel pro/1000 MT Desktop (82540EM); Intel pro/1000 T Server (82543GC); Intel pro/1000 MT Server (82545EM); Paravirtualized network adapter (virtio-net) Corresponds to 6 items in the "Control Chip" list: command Line There is a command-line tool called Vboxmanage MODIFYVM that can be used to configure the NIC. In the command line mode, the

, including low-level pixel control programs, also used by Cairo libraries, Cairo is a 2D graphics library for supporting multiple output devices, Qpixman is a lightweight modified version of Pixman * Qcairo:cairo is a vector graphics device-independent library, Qcairo is a lightweight modified version of Cairo *celt:celt is an audio compression algorithm for high-quality transmission of music, the signal will have a very small delay *ffmpeg: is a used for audio and video re-encoding, conversion

order to complete an operation involving multiple registers, causes the VMM to intercept each register access and perform the corresponding simulation, resulting in multiple context switches. This approach can greatly reduce the frequency of context switching, providing greater space for optimization.Example: Xen virtio (virtio Next I will continue to research, mainly including

, cores = 1, threads = 1-uuid response-no-user-config-nodefaults-chardev socket, id = charmonitor, path =/var/lib/libvirt/qemu/AloeCCnode. monitor, server, nowait-mon chardev = charmonitor, id = monitor, mode = control-rtc base = utc, driftfix = slew-global kvm-pit.lost_tick_policy = discard-no-hpet-no-reboot-global PIIX4_PM.disable_s3 = 1-global PIIX4_PM.disable_s4 = 1-boot strict = on-device ich9-usb-ehci1, id = usb, bus = pci.0, addr = 0x5.0x7-device ich9-usb-uhci1, masterbus = usb.0, firstpo

: 56Up broadcast running multicast mtu: 1500 Metric: 1RX packets: 377686 errors: 0 dropped: 0 overruns: 0 frame: 0TX packets: 110643 errors: 0 dropped: 0 overruns: 0 carrier: 0Collisions: 0 FIG: 1000RX bytes: 507725096 (484.2 MiB) TX bytes: 66233641 (63.1 MiB) 4. Create a Virtual Disk:Qemu-img create-f qcow2/kvm/test003.img 5G 5. Create a virtual machine:Qcow2 format[Root @ localhost ~] # Virt-install -- name test003 -- ram 512 \-- Vcpus = 1 -- disk path =/kvm/test003.img, size = 5, format = qco

= ubuntuprecise \-- Accelerate \-- Hvm \-- Disk path =/home/conan/OS/g1.img, size = 6, bus = virtio \-- Location/home/conan/OS/ubuntu \-- Extra-args = 'console = tty0 console = ttys0 '\-- Network bridge = br0, model = virtio \-- Graphics none Go to the installation page Lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqu [!] Select a language tqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqkXX Choose the language to be used for the in

bytes of packet headers using the Mac in UDP method. can refer to this articletest drops in a virtual environmentFirst experiment:Iperf Tests whether to drop packets.Iperf (Iperf is a network performance test tool, which is the speed test under Linux), two generotor start to fill traffic at full speed. Then we started to calculate the number of drops per point in Figure 1 based on statistics. The results are as follows:Because the various configurations of table one are different, the total for

:0txpackets :110643errors:0dropped:0overruns:0carrier:0 collisions:0txqueuelen:1000 RXbytes:507725096 (484.2NBSP;MIB) TXbytes:66233641 (63.1 MiB)4. Create a Virtual disk:Qemu-img create-f qcow2/kvm/test003.img 5G5. Create a virtual machine:QCOW2 format [[email protected] ~]# virt-install--name test003--ram--vcpus=1--disk Path=/kvm/test003.img,size=5,format =qcow2,bus=virtio--accelerate--cdrom/tmp/centos-6.6-x86_64-minimal.iso--vnc--vncport=5910--vncli

/network-scripts/ifcfg-em1Device=em1type=ethernetonboot=yesbridge=br0nm_controlled=yes2. Restart the network/etc/init.d/network restart3. View Network ConnectionsBrctl Show If the configuration is successful, the following output will be available: Bridge Namebridge IDSTP Enabledinterfacesbr08000.14187745822enoem1vnet0vnet1vnet2vnet3vnet4vnet5vnet6virbr08000.5254005fcc0byesvirbr0-nic4. Check if IP forwarding is turned oncat/etc/sysctl.conf |grep Ip_forwardnet.ipv4.ip_forward = 1 if not enabled:

tap is the corresponding second partNET Nic: Create a new virtual machine NIC interface, using the method:-net Nic[,vlan=n][,macaddr=mac][,model=type][,name=name][,addr=addr][,vectors=v]Create a new NIC device and connect to the specified VLAN, macaddr to specify the MAC address for itmodel Specifies the type of NIC, QEMU can emulate multiple types of NIC devices, such as the default NIC for e1000 on the VIRTIO,PC architecture, and you can use the qe

frame:0TX packets:110643 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:507725096 (484.2 MiB) TX bytes:66233641 (63.1 MiB) 4. Create a virtual disk: Qemu-img create-f qcow2/kvm/test003.img 5G 5. Create a virtual machine: Qcow2 format[Root@localhost ~]# virt-install--name test003--ram 512 \--vcpus=1--disk path=/kvm/test003.img,size=5,format=qcow2,bus=virtio \--accelerate--cdrom/tmp/centos-6.6-x86_64-minimal.iso\--vnc--vn