similar to: Reading the new 6.0 manual - now questions

Good m/d/n guys, wanted to put idea through you before trying to implement this. So afaik LVM snapshots basically don't take any "real" space on hard drives. I'm using KVM virtualization on my hosts and let's say i create an LVM volume for my linux VM, then install it properly, shut it down and take LVM snapshot of it. Basically i've just cloned it (LVM2 snapshots are

Hi list, According to the libvirt documentation [1] "Show maximum number of virtual CPUs for guest domains on this connection" This may not be a complete definition. My first guess from the above was that this returns the number of virtual CPUs that can exist at the same time on the host, either one or several VMs. In fact it returned 16 in my fedora 20 desktop running with KVM,

I would attempt to decrease number of VCPUS allocated to cloud VMs. Say try 4 => 2 . My guess there is not enough VCPUs to run OS itself. I also guess CPU model << Haswell. Please , confirm ( or not) if possible. Since Haswell was launched via my experience Intel Xeons based on this kernel (or latter kernels ) behaves much better then SandyBridge or IvyBridge based. Boris.

Hi there, I know it's in the supplementary channel and there is no srpm to rebuild windows drivers. But are these drivers anywhere available so that I can use them without a rhn subscription? Thx Rainer

Hey George, I was wondering if you could explain in simple terms how the scheduler would handle per-physical CPU when there are say 16 guests (each guest is using one VCPU), 32 physical CPUs and dom0 is not restricted to any CPUs. Would the scheduler per physical CPU schedule: guest, dom0, guest, dom0, and so on; or would it be more random? (I assume that both guest and dom0 would do a hypercall

Reports posted look good for me. Config should provide the best available performance for cloud VM (L2) on Compute Node. 1. Please, remind me what goes wrong from your standpoint ? 2. Which CPU is installed on Compute Node && how much RAM ? Actually , my concern is :- Number_of_ Cloud_VMs versus Number_CPU_Cores ( not threads) Please, check `top` report in

Dual Core AMD Opteron(tm) Processor 280, 2 units. All configs are native. исходное сообщение Тема: RE: [Xen-users] Bad network performance between VMs in a domain. От: zvoice@snto.ru Дата: 18.04.2007 11.15 In my next message i ll give you to your questions, but i think the problem is when the packet comes from vif to bridge and then from bridge to another vif. But what is strange, that packets

Hi Folks, I''ve been getting just a little fed up with the state of Xen on Debian Lenny - there are a couple of known bugs that lead to periodic kernel panics - but fixes haven''t made it into the Lenny distribution. I''m sort of waiting to see how things shake out with Debian Squeeze, when it becomes stable, but... I''ve been noticing that Suse (both the

Hello, My testing machine has 2 quad-core CPU (It supports hyperthreading, but i disable it in BIOS). I uses Xen 4.0.1 as the hypervisor. When I use 8 VMs to conduct a test, CPU affinity of the VMs is very strange. Like this: vm_name vcpu_num cpu_affinity Domain-0 8 any VM1 4 1,3,5,7 VM2 4 1,3,5,7 VM3 4 1,3,5,7 VM4 4

Hello guys, Is there any way to match a render :nothing? I coudn''t find any way to do this so i''ve just changed my controllers to do a "head :ok", but it would be nice to know if there is any other way :) -- Maur?cio Linhares http://alinhavado.wordpress.com/ (pt-br) | http://blog.codevader.com/ (en) Jo?o Pessoa, PB, +55 83 8867-7208

Hi, Netperf tells me that a KVM VM using a bridged connection to a system across the Gigabit LAN sees on average about 1/10th of the bandwidth the host sees. This is on very lightly loaded hosts, although with multiple low-use VMs. I've tried adjusting the CPU throttling after seeing that mentioned as a possible factor in slowing down a bridge, but it has not much if any effect here. Is

Hi all, I just upgraded more servers, and doing some tests I found that my setup for kerberos/ldap authentication against Active Directory is no more working. I don't know why... I followed some times ago scott Lowe blog for this setup : http://blog.scottlowe.org/2007/01/15/linux-ad-integration-version-4/ And it was working correctly until the upgrade. What is curious is that id command

Hello again :) I''m trying to run rcov on my specs here but i''m getting a lot of segmentation faults (and they usually happen at different places): /home/mauricio/NetBeansProjects/reeds/vendor/rails/activerecord/lib/active_record/attribute_methods.rb:211: [BUG] Segmentation fault ruby 1.8.6 (2007-09-24) [i486-linux]

Hi all (and Mr. Dunlap in particular), I have a question about the credit (and ultimately credit2) scheduler that I hope you can help me with. I have read the white paper "Scheduler development update" and as much material on the credit scheduler as I can find, but I am still not completely clear on how I should think about the cap. Example scenario: Server hardware: 2

Can find documented how many CPUS can Xen support and how many Virtual Machines per CPU are allowed? Can someone please supply this info? -- View this message in context: http://www.nabble.com/Supported--of-CPUs-VMs-per-CPUs-tf2278842.html#a6329630 Sent from the Xen - Dev forum at Nabble.com. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

Hi all, This is my first post to the list, I hope someone out there can help! I am running xen 3.0.3, with CentOS 5.2 based Dom0 (kernel-xen-2.6.18-92.1.22.el5) Recently I have noticed some complete system lockups on a few different servers. Neither Dom0 or any of the guests respond to pings, connecting a keyboard and monitor to the system only shows a blank screen. Nothing is written to logs

Hi, I am a Masters student from Carnegie Mellon University. I am looking for a research topics for an Advanced OS & DS course we have. I wanted to know what is the current support for NUMA on Xen ? Does it support the IBM x440 and AMD64 Opteron ? Also, does the Xen scheduler do NUMA aware scheduling so it does not degrade the VM performace ? My group is currently looking into Scheduling

Hello, This small series deals with some weirdness in the mechanism with which the credit scheduler choses what PCPU to tickle upon a VCPU wake-up. Details are available in the changelog of the first patch. The new approach has been extensively benchmarked and proved itself either beneficial or harmless. That means it does not introduce any significant amount of overhead and/or performances

hi, --> i have 8cores cpu. but my xenserver is using only one cpu, how to make use of all cpu cores --> machine is having 16G ram but domain0 is having very less memory. is there any way to increase memory for domain0 [root@xenserver-DZONGRI ~]# cat /proc/meminfo MemTotal: 574464 kB MemFree: 111776 kB Buffers: 9500 kB Cached: 117320 kB SwapCached: 100

Hi All, First time mailing here, I hope someone can help. We?re running a OpenStack Newton environment on top of CentOS-7.3, LibVirt and Qemu-KVM-EV. We are encountered an issue live migrating a VM between 2 hosts with different CPUs and LibVirt throws the following error: libvirtError: unsupported configuration: guest and host CPU are not compatible: Host CPU does not provide required features: