e1000

, in the third case above, You have to insert printk printing in the source code to further determine the actual time consumption process. The Linux kernel startup analysis after my last reduction is as follows: Total kernel Start Time: 6.188 s Key time-consuming part: 1) initialization of core components such as 0.652 s-Timer, IRQ, Cache, And Mem Pages2) 0.611 s-kernel and RTC Clock Synchronization3) 0.328 s-calculate the total consumption of Calibrating Delay4 CPU cores)4) 0.144 s-calibration

0 Else Echo "error: no interface specified" Exit 1 Fi 4. Create an empty tap network shutdown script (to avoid a warning when the VM is shut down) Sudo VI/etc/qemu-ifdown The content is as follows: #! /Bin/sh After the configuration is complete, run the following command to start qemu and directly use the bridge without other configuration (filename is the image file path ): Sudo qemu-system-x86_64-hda$ Filename-Net Nic, model = e1000, ma

Openstack qcow2 Image File CreationI. Linux image file generationA. Bridging network device script[Root @ app10-051 ~] # Cat/etc/qemu-ifup#! /Bin/bash# Bridging network devicesSwitch = br0If [-n $1]; thenIp link set $1 upBrctl addif $ {switch} $1Exit 0ElseEcho "no interface! "Exit 1FiCreate a qcow2 FileQemu-img create-f qcow2 centos_6.5.qcow2 20GCreate a linux Image/Usr/libexec/qemu-kvm-m 1024-cdrom iso/CentOS-6.5-x86_64-minimal.iso-drive file = centos6.5-30G. qcow2, if = virtio-net nic, model =

eth1: Supported ports: [TP] Supported link modes: 10 baseT/Half 10 baseT/Full 100 baseT/Half 100 baseT/Full 1000 baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10 baseT/Half 10 baseT/Full 100 baseT/Half 100 baseT/Full 1000 baseT/Full Advertised auto-negotiation: Yes Speed: 1000 Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: umbg Wake-on: d Link detected: yes2) [root @ linux/] # ethtool-I eth1 driver:

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

My computer is winn7 64-bit. It is difficult to install the vmwarevm and install the Mac lion on it, but it cannot be connected to the network. I searched the internet and some netizens said I was looking for it. in the vmx file, add ethernet0.virtualdev = "e1000" to it. I found the file and found that there was such a sentence, but I still couldn't access the network. Some people on the Internet say that Windows 7 cannot set the network connection

Recently, the company has a project to modify Intel's NIC Driver. Because all devices in the company are using newer NICs, take the e1000e part of the kernel for analysis. The e1000 is an old driver used to support older intel Nic devices. For the comparison between the two parts, I have an article on lwn.ArticleFor more information, see http://lwn.net/articles/278016 /. Kernel version: 3.0.13 Source code Directory: Driver/NET/e1000e/ Linux release

Synchronization3) 0.328 S-computing calibrating delay (total consumption of 4 CPU cores)4) 0.144 S-calibration APIC clock5) 0.312 S-calibration migration cost6) 3.520 S-Intel e1000 Nic Initialization Next, we will analyze and resolve the above parts one by one. (3) Next, perform specific optimization. CELF has already proposed a complete set of startup optimization solutions for Embedded Linux for consumer electronic products. However, due to differe

performances are supported for reference only. We can see that para-receivalized Disk Driver provide a good speedup versus the standard receivalized ide controller. Anyway, both approaches are far behind the native scores. Net speed now: In this case the paravirtualized Network Driver makes an huge difference: while it can't touch native speed, it is way ahead of the virtualized e1000 Nic adapter. the rtl8139 was benchmarked for Pure curiosity, and

The latest moblin V2.0 netbook image can be downloaded and tested. This version modifies some bugs and adds new features. Current download Http://mirrors.kernel.org/moblin/releases/test/beta/images/moblin-netbook-beta-refresh-20090616-001.img MD5 Verification Code Http://repo.moblin.org/moblin/releases/test/beta/images/md5sum.txt Introduction Http://moblin.org/documentation/test-drive-moblin/using-moblin-live-image Problem Known issues: http://moblin.org/documentation/test-drive-moblin/know

bridging settings. Here, you need to read the documents of the software, which will be of great help.The above is the most basic implementation method of KVM. We hope you can read more documents to learn more and more flexible functions. BTW:The reason for the poor performance of the original disk has been found. The previous method is to use-hda disk. IMG method to use the virtual disk. Now, after the version is updated,-drive file =/home/lm/KVM/WINXP. IMG, cache = writeback to use virtual dis

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

192.168.91.100 192.16 8.91.254;cobbler syncsystemctl start dhcpd #启动dhcpManagement distroCobbler Import--path=/misc/cd/--name=centos7.3cobbler distro listSet individual properties of cobblerCp/root/ks7.cfg/var/lib/cobbler/kickstarts/cobbler profile Add--name=centos7.3-x86_64-desktop--distro= centos7.3-x86_64--kickstart=/var/lib/cobbler/kickstarts/ks7.cfgcobbler Profile Listcobbler profile Remove--name= Centos7.3-x86_64Then we create a new virtual machine and select the host mode of a network se

directory, and the properties for creating the file permissions and names of the device files are customizable;Udev has rules files:/etc/udev/rules.d/Modify the network card device name; vim/etc/udev/rules.d/70-persistent-net; to be effective, first uninstall the network card module, in the installation can be, that modprobe-r e1000 in Modprobe e1000uname command:-r: The release number of the kernel;-N: hostname;-A: Displays all information; RAMDisk