I have just bought new PC (Intel mother board "Intel DP43TF ATX" and Processor "Intel Core 2 Quad Q9550"). and I have installed centos 5.3 32 bit.
NOTE: All cores are enabled in BIOS.
When I issue below command, it shows only one core (not 4 cores): what could be reason!
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
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Only lately I notice that my CentOS 5.2
(Linux centos52-64-fuj 2.6.18-92.el5 #1 SMP Tue Jun 10 18:51:06 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux)
does not detect a second core according to /proc/cpuinfo
Quote:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
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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
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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
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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.
View 3 Replies View RelatedMy 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.
View 2 Replies View RelatedI 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...
Code:
model="`cat /proc/cpuinfo | grep model | cut -d: -f2 | cut -c1-3`"
echo $model
All i want this to do is spit out the model number once. (I need to pass it to another script)
I have following in cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
[code]....
JIt was easy to check in Windows, but I just wanted to know if there's a way to check if Ubuntu is utilizing both cores of my processor (Pentium Core 2 Duo).
View 9 Replies View Relatedidentifying the number of cores each processor is running.
I have checked /proc/cpuinfo but i dont find any core details inside it and I can find only no of processor and its speed.
Basically system monitor and the "top" command show 2 cpu cores when I only have 1 (a 3 Ghz P4 on my work computer).
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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.
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Edit: I can do "tune2fs -l <device> | grep acl | awk '{print $4}'" and if that isn't empty I can update /etc/mtab with "mount -f -o remount,acl <device>", but like the udev rule I previously messed with this seems lumberingly unelegant to me.
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An error occurred mounting device proc as /proc: mount failed: (9, None). This is a fatal error and the install cannot continue.
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I open the ports in graphical mode.
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shananigen:/etc# cat exports
#
/home/gerard 192.168.1.34(rw,sync,no_subtree_check,root_squash)
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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
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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.
View 3 Replies View RelatedI am trying to install Linux on a 12-year-old PC with an AMD Pentium II equivalent and with 128Mb RAM. Xubuntu 10.04 won't install because the kernel requires "cmov" but the PC's processor doesn't have it. There are loads of posts on the Internet about this but I have not found any listings of Linux distros that don't need cmov other than TinyMe, which I shall try installing.
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View 5 Replies View RelatedSystem has a boot partition on raid1. The root filesystem is on RAID1/LVM.During the boot process, it gets to here:
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: Intel(R) Celeron(R) CPU E1200 @ 1.60GHz stepping 0d
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most of the time, it will not reboot. I can cycle power, and, eventually, it does boot. So, hardware issue perhaps? Something else?What can I do, or add to the configuration to help debug this and figure out why? For boot options, I have tried noapic, apm=off, noht, nomce, nousb, nousbstorage, and none of those helped. As the machine is remote, to mess with console stuff, I have to get a KVM over IP hooked up, which I can do.
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More information on my system is below:
Code:
$ lsb_release -rd
Description:Debian GNU/Linux 6.0.1 (squeeze)
Release:6.0.1
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