similar to: What are KVM guest cores?

Hi All, How does KVM handle multiple cores. I have an x5650 with 6 real cores that presents itself to my OS as 12 virtual cores (hyperthreading). Does KVM see 6 or 12 cores. And, can I tell KVM how many cores I want it to use? Am I misunderstanding how KVM works? What I am after is if my guest is 100% busy, I still want some power left over for my host. Many thanks, -T

> -------- Original message -------- > Subject: Re: [libvirt-users] Can I configure cores instead of CPU's > From: Todd And Margo Chester <toddandmargo at gmail.com> > To: "libvirt-users at redhat.com" <libvirt-users at redhat.com> > CC: > > > Hi All, > > Scientific Linux 6.1 x64 > qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 > > My XP-Pro

CentOS-6.2 What is the maximum number of cpus can I configure for a single vm guest running on a host with this hardware? # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 1 Core(s) per socket: 4 CPU socket(s): 1 NUMA node(s): 1 Vendor ID:

This may not be the best place to ask, but I was prompted by a question about guest cores on KVM. We currently use VMWare Server (v1.0) on CentOS5. It supports up to two virtual CPUs, but not very well, as I understand it. VMWare Server 2.0 might do better at supporting the same maximum of 2 CPUs, but if my research is correct, they both use what is called "strict co-scheduling".

On 5/9/23 9:59 AM, Marc wrote: >> I have a Windows 10 pro (64bit) long time running as a libvirt/KVM guest >> that I think Windows Update finally narfed. >> >> The hardware is a supermicro motherboard with dual Intel E5-2640 CPUs >> for a total of 40 threads and 64GB >> >> The guest is allocated 2sockets, 5cores, 2 threads and 32GB of RAM. >>

Dear all, I'm sitting here just in front of my new PC@work and wonder about the following question: * How can I adress multiple CPUs (cores) out of R to speed up the simulations I run? * What are the prerequisites to do so? Maybe anyone could give me a hint where to start reading? Regards, Thomas P.S.: I searched the R-archive to find an answer but did find none.

Hey all, I have a Windows 10 pro (64bit) long time running as a libvirt/KVM guest that I think Windows Update finally narfed. The hardware is a supermicro motherboard with dual Intel E5-2640 CPUs for a total of 40 threads and 64GB The guest is allocated 2sockets, 5cores, 2 threads and 32GB of RAM. (I've also tried 1 socket, 20 cores, 1 thread and 1s10c2t -- no help) In an SSH session to

Hi All, I am running Virtual box on a CentOS 5.5 x64 bit host. The guest is 23 bit Windows Server 2008 SP2 (not R2). Virtual Box bug 7606 is causing a customer of mine serious financial harm. http://www.virtualbox.org/ticket/7607#comment:3 I have tried in vain month or month over month to get Oracle to sell me a tech support contract, so that we can get some priority on this issue.

Good morning, The tuning page says worker_processes should be at least the number of CPU cores on a dedicated server. In the case of hyper-threading, should this be the number of cores or the number of threads? For example the Intel Core i7-2600 Quadcore[1] has 4 cores and 8 threads. Would I start my worker_processes at 4 or 8? Finally, would the same apply to Nginx worker processes? Many

On Tue, May 09, 2023 at 02:00:25PM -0500, Benjammin2068 wrote: > I will say one thing that I noticed is: when giving the guest 8 cores > and not setting the topology, windows device manager shows 8 CPUs but > the task manager only shows 2. Feh. Windows. Historically, if you did NOT specify topology then QEMU would defaults to sockets==nCPUs, cores==1, threads=1. Since QEMU 6.2, new

Which among these three motherboard is the best supported in Linux (Centos/Ubuntu) ? Intel? Desktop Board DH55HC [ http://ark.intel.com/Product.aspx?id=42409 ] Intel? Desktop Board DP55WG [ http://ark.intel.com/Product.aspx?id=40078 ] Intel? Desktop Board DP55KG [ http://www.intel.com/products/desktop/motherboards/DP55KG/DP55KG-overview.htm] Also which will be a good processor , for using

Has anyone had any success getting WinXP 32bit to use 4 CPU's under Centos 5.5 KVM? I have tried everything and the best I can get is 2 CPU's. I tried everything listed here http://www.linux-kvm.com/content/running-windows-smp-guests I am using the VIRTIO drivers. Is this known limitation of KVM-83-164 (Centos5 release) with WinXP 32bit? I think there are reports of it working

What is the correct combination of packages to configure and manage VMs via virt-manager undet CentOS-5.4? If I use qemu then while virt-manager works I obtain SELinux alerts with respect to the real-time clock. If instead of qemu I use kvm-qemu-img then virt-manager simply does not work. It starts but it does not find any form of qemu and the selection boxes are all greyed out. Further, do I

Hi All, I have been Googling my rear off. Where is the manual for KVM? It seems like the information is just all thrown about. Anyone know of a manual? A pdf? A home page with instructions? I am teachable (mostly). Many thanks, -T

Hi All, I am confused. In one of the examples of a PDC, the following smb.conf parameter is given: add user script = /usr/sbin/useradd -m -G users '%u' If you have "passdb backend = tdbsam" and the way to add users to "tdbsam" is "pdbedit -a -u username", what is the purpose of the "add user script"? I am thinking it is to add the user

Hi, my video sharing website (politube.org) that I developed with rails, runs on lighttpd/fcgi (I know it is obsolete by now) and is severely under load and regularly blocks because the lighttpd process chews up 50% of RAM (1GB). So now I want to move the system to a new server with 8GB, 64bit , Quad core processor (intel i7 920) but I am not sure if hyperthreading will really do anything better.

Hi All, What causes this error in /var/log/messages when on XP-Pro client boots up? winbindd[4041]: idmap uid range missing or invalid winbindd[4041]: idmap will be unable to map foreign SIDs winbindd[4041]: [2009/04/02 19:38:22, 0] nsswitch/idmap.c:idmap_alloc_init(820) rn1 winbindd[4041]: ERROR: Initialization failed for alloc backend, deferred! Many thanks, -T

Hello, Is there a way to force through R the amount of the cpu's cores (or the cpu's utilization level) used under Windows 7 or Linux? Thanks, Costas

Hi All, Can someone point me to a good reference on how to configure "tdbsam" ? Many thanks, -T

On 06/13/2013 10:11 PM, Michael Giardino wrote: > Hi, > > I'm running libvert on a Debian 7 system. I have upgraded libvert and qemu > from source (v1.06 and 1.5.0 respectively) and the problem persists. The > guest OS is also a Debian 7 system running a non-SMP kernel. The error > message from virt-manager is > > Error starting domain: unsupported configuration: