Right now: Small packet performance sucks under Xen (moved from the question itself to a separate answer instead) According to a user on HN (a KVM developer?) this is due to small packet performance in Xen and also KVM. It’s a known problem with virtualization and according to him, VMWare’s ESX handles this much better. … Read more
There were some proof-of-concept rootkits like Blue Pill a while back that could own a system with VT on. After this discovery, most vendors began shipping their units with VT disabled as a general security precaution.
There are actually 4 sets of Locally Administered Address Ranges that can be used on your network without fear of conflict, assuming no one else has assigned these on your network: x2-xx-xx-xx-xx-xx x6-xx-xx-xx-xx-xx xA-xx-xx-xx-xx-xx xE-xx-xx-xx-xx-xx Replacing x with any hex value.
stop the VM run qemu-img resize vmdisk.img +10G to increase image size by 10Gb start the VM, resize the partitions and LVM structure within it normally
Since all Linux distributions run the same (yup, it’s a bit simplified) Linux kernel and differ only in userland software, it’s pretty easy to simulate a different distribution environment – by just installing that userland software and pretending it’s another distribution. Being specific, installing CentOS container inside Ubuntu OS will mean that you will get … Read more
Virtual memory isn’t even necessarily memory. For example, if a process memory-maps a large file, the file is actually stored on disk, but it still takes up “address space” in the process. Address space (ie. virtual memory in the process list) doesn’t cost anything; it’s not real. What’s real is the RSS (RES) column, which … Read more
Qemu: QEmu is a complete and standalone software of its own. You use it to emulate machines, it is very flexible and portable. Mainly it works by a special ‘recompiler’ that transforms binary code written for a given processor into another one (say, to run MIPS code on a PPC mac, or ARM in an … Read more
I seach for 2 days and nothing worked for me.. then i find the solution: The problem is in Windows 10… u need to disable Hyper-V Manager … 1) make sure in your BIOS cpu virtualization is enable. 2) open your CMD as administrator 3) in your desktop folder type bcdedit and look for hypervisorlaunchtype in the … Read more
Softwares run on the OS on a very simple premise – they require memory. The device OS provides it in the form of RAM. The amount of memory required may vary – some softwares need huge memory, some require paltry memory. Most (if not all) users run multiple applications on the OS simultaneously, and given … Read more
I have enabled the virtualization in bios setup but when i try to launch the emulator i am getting the error “your cpu doesn’t support vt-x or svm” I have installed Intel haxm too