There is a computer with two "Xeon(R) CPU X5550 @ 2.67GHz" CPU. The Hyper-threading is enabled, so it looks like 16-core system, but really there is only 8 physical cores.
I know that when hyperthreading is enabled, each physical core is splitted into two virtual cores. I want to know, which pair of virtual cores shares a physical core and which are not. Or, how (in what order) will Linux enumerate HT-cores comparing to real cores. (enumerating is done for sched_setaffinity and taskset masks).
I have a dump of /proc/cpuinfo file from the system.
I think there are possible:
CPU0-CPU7 are not sharing phys. core. CPU8-CPU15 too. But sharing is in pairs CPU0+CPU8, CPU(i)+CPU(i+8) and so on. or CPU0+CPU1 are from single physical, CPU2+CPU3, CPU(2*i)+CPU(2*i+1). or exotic CPU0+CPU15 sharing, CPU1+CPU14 ... or random?
The hard moment in this case is that there are 2 physical dies of CPU (two sockets), and usual recommendation of using "physical id:" field can't help
The cpuinfo:
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
Is there a simple way to determine the CPU socket from the output of /proc/cpuinfo. Determining the type of processor is simple enough, but the processor I have (Celeron) has two different possible sockets. The output of /proc/cpuinfo is:
processor : 0 vendor_id : GenuineIntel cpu family : 15
[Code]...
I've looked on the Intel processor finder web site with appropriate filters, but the stepping values do not appear to match anything.
I have fedora 14 installed and wish to use/learn kvm. I installed via groupinstall the virtualization group. I see vmx in /proc/cpuinfo. but when I start virt-manager I get a message that kvm is not installed or cannot be leaded into the kernel (to make a long message short). I am at a loss here as to what to do. I run cat /proc/modules and see "kvm 257420 0 - Live 0xffffffffa022a000". also after running modprobe kvm I run [root@fed14 ~]# lsmod | grep -i kvmkvm 257420 0 and see kvm there.
My CPU has 2 cores, so I can see two parts in /proc/cpuinfo.But, I want to know if CPUs that support Hyper-Threading (or similar tech), will /proc/cpuinfo give CPU info per core or per thread (or call it sibling)?I only know that Windows Task Manager will give CPU usage statistics per thread if the CPU supports HT.
I recently built a new computer. For CPU, I am using AMD Athlon II X2 @ 2.8GHz... However, when I do cat /proc/cpuinfo, I get the following:
processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 6 model name : AMD Athlon(tm) II X2 240 Processor stepping : 2 cpu MHz : 800.000 cache size : 1024 KB
and same thing for processor: 1 Notice that for cpu MHz, it says 800.000. However, that is not correct... Shouldn't it say 2800? Is this a bug? Am I looking at this wrong?
I'm trying to retrieve a single string or value from /proc/cpuinfo, but when I try to extract the model (not the model name) the model name comes with it, also it likes to print it twice...
today i install centos x86_64 in my server, but /proc/cpuinfo display 2000Mhz . My processor model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz, before the server had centos i386 and display 2800Mhz.
new user and have had a crash boot up and get the following: missing modules (cat/proc/madules;is/dev) Alert! /dev/disk/by-uuid/13bf007d-3bab-48et-b91a-babe68ab3223 does not exist
I'm using Cpanel on my server, before upgrade to new kernel, i could see 8 cores on my i7 server, now i only see 4 cores, is there anything that i need to do to have another time the 8 cores?
I've got the F13 LiveCD that I was able to boot and use using the "nomodeset" boot option. From the desktop I'm trying to perform an Install to Hard Drive. I've read the Install from LiveCD post regarding the creation of a /boot partition and a / root partition. I've tried creating them without the LVM group and with. But every time I appempt to install I get...
An error occurred mounting device proc as /proc: mount failed: (9, None). This is a fatal error and the install cannot continue.
Hardware is a Sager 8887 (P4, 3.06HT, 60GB HDD, Radeon 9000 graphics adapter)
Just installed a new CentOS with the control panel Interworx. Everything fine, BUT. I can't add new ipadresses cause there is no network device.When i do 'ifconfig' i get the following:
[root@cobra ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:1C:C0:A7:25:9F inet addr: Bcast: Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
While experimenting with rsync, I accidently deleted a bunch of files in the /proc directory. I think it was the directories: 1, 2, 3 ... 10.This happened a few days ago and after rebooting a number of times, I do not notice any problems.
i'm using Centos 5.3 (2.6.27.10-grsec-xxxx-grs-ipv4-64 x86_64 kernel) and i got a problem with installing apf/configuring iptables. It seems that my kernel doesn't support Loadeble Kernel Modules. I'm receiving following message when catting /proc/modules: Quote: cat: /proc/modules: No such file or directory /sbin/modprobe -l FATAL: Could not load /lib/modules/2.6.27.10-grsec-xxxx-grs-ipv4-64/modules.dep: No such file or directory
Just installed centOS 52 x86_64 on a Core 2 Duo (E6750). From the /proc/cpuinfo I see that only one processor is detected. Any parameter on the BIOS to be changed?
How many disks are required to get Centos 5 up and running.? It has been awhile since I've done an install but I use to use just the first three disks, with the rest being the manuals and such.
I have been trying to install clisp on one of our systems and get the error: Missing Dependency: libsigsegv.so.0()(64bit) for package: clisphowever, I have checked and the library libsigsegv-2.7-1.el5.rf.x86_64 and its associated header file package are, in fact,installed.
Using Centos 5.4 I've successfully set up pppd and wvdial to automatically dial out but I need wvdial to call an alternative number if the number is busy or dialout fails for some other reason and I cannot get this to work. I've gone back to basics and tried manually soliciting wvdial with a minimal wvdial.conf:
While searching for the maximum numbers of CPUs supported by CentOS 5 x86_64 I found the following page: [URL]. The question I have regarding the specified information ("64/255" logical CPUs) is, which number means what. Does this mean 64 real CPUs with a maximum of 255 cores/hyperthreaded CPUs or something similar or totally different?
we use for the installation of our machines bladelogic. We have different servers. Some servers have only one network interface, but it can be 2, 4 or may be more. There is always one network device for using PXE, but it is not always eth0.Is there any way to run kickstart without the entering of the PXE-Device so, that kickstart checks all the network devices in the system?