CPU stands for Central Processing Unit, and is the main processing chip used in every computer. Brands include Intel, AMD and ARM. CPUs are commonly available in 32- and 64-bit, and come in a variety of frequencies or with multiple cores.
2
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1answer
76 views
How to make cpu0 offline?
I want to make cpu0 offline. I have dual core laptop. I can make cpu1 offline ( using offline file ) but can't make cpu0 offline. How to do this ?
0
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1answer
15 views
High CPU on video chats : any options?
With googling and finetuning, I've always been happy with Ubuntu. But now I can't find a solution anywhere for the high cpu usage of video conferencing.
I have an Asus 1215B eeepc, since more than a ...
0
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0answers
17 views
Dropbox very high CPU usage without any actual data transfer
The Dropbox process constantly clocks more than 50% CPU usage sometimes going up to the higher 80s and 90s. At the same time it does not even upload/download the files it is supposed to. The progress ...
1
vote
1answer
18 views
What is hammering the CPU when top is not running?
On Kubuntu 12.10 I can see with the KDE System Monitor Plasmoid that the CPU usage is fluctuating between 60% - 90% on both cores. As soon as I open top it goes down to 3% - 10%. I thought that the ...
0
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1answer
21 views
trying to install ubuntu 12.04 on my oracle vm 4.2. can't susseed
i was trying to install ubuntu 12.04 in oracle vm 4.2.12r84980 , after booting is "this kernel requires an x86-64 CPU, but only detects an i686 CPU, unable to boot"
but i am using a 64 bit win8,and ...
7
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3answers
8k views
How to determine if CPU VT extensions enabled in bios?
I know the command to figure out if a CPU can support VMware Workstation 8 or VMware Player 4:
$ grep flags /proc/cpuinfo
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov ...
-1
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0answers
19 views
Difference between i686 and x86_64 [duplicate]
I have Intel core 2 duo machine with the following CPU details
Architecture: i686
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Indian
CPU(s): 2
On-line ...
0
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0answers
12 views
CPU interrups on Lenovo U310
im new at Ubuntu and just got my brand new Lenovo E310. I noticed that i have around 500-1000 IRQ (PCI-MSI-edge i915 or "local" interrups per second, is this a bad value or is it normal to have ...
0
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1answer
893 views
Intel Core i5-2467M running hot on one core while the other keeps cool
I am running an Ubuntu 11.10 Beta2 Wubi installation on my Samsung 900x3a notebook. I had to try it with wubi because this darn thing just won't boot off usb drives (even using the port on the right ...
0
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2answers
97 views
Why is the Intel Turbo Boost Mode not running at maximum speed?
I tested CPU frequencies with either the Intel tool i7z and turbostat from the linux-tools package (sudo modprobe msr, sudo turbostat) and what I find as maximum frequencies for two different ...
1
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1answer
267 views
CPU Fan not working on acer 4755G i3 ubuntu 12.10
Hope you can help me, I'm new to ubuntu and install this 12.10 version on my acer laptop. The problem is I always got high temperature and maybe because my CPU fan is not working. Tried to install ...
0
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2answers
2k views
How to run Ubuntu 12.10 on a Laptop with maximum power saving? [duplicate]
I have a Toshiba L500-21T with Intel core I3 M330 2.13GHZ having 4 cores
with Amd Mobility Rdeon 4500 Graphic card, 360Gb HD and 6GB DDR3 RAM.
How can I run my lappy smoothly while giving me ...
0
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0answers
33 views
Amd apu e-350 recognized as e-300
My machine is a lenovo thinkpad x121e, i'm running 12.04 precise 64bit. Recently I discovered that my cpu is recognized as amd e-300, the problem is that i'm pretty sure that this laptop only comes ...
-1
votes
0answers
18 views
Building Linux PC [closed]
Im building a linux pc, i dont know if it will work. The specs are
Intel G540 CPU 2.50 GHZ 2M CACHE 2.5 2 LGA 1155 Processor
MSI LGA1155/Intel H61/DDR3/A&GbE/MicroATX Motherboard H61M-P31 (W8)
...
0
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0answers
21 views
Limiting CPU frequency per process?
I am running a Minecraft server hosting. I unfortunately experienced that the servers are eating up all the CPU's processing power, so I want to limit the CPU frequency per each process.
I have read ...
0
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0answers
24 views
Higher CPU consumption after replacing RAM with 2 RAMs
I replaced my 2GB RAM (PC3-10800) with 2 2GB RAMs (PC3-8500) and my CPU consumption is higher, pc is often slower and laggy. I experienced this problem on Ubuntu 12.04 and Ubuntu 13.04 (32-bit).
...
0
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1answer
18 views
How to troubleshoot high cpu problems related to postgres and postmaster service?
I'm using an open source(RHCE 6.2) based machine running SIEM software , when i do the top command i see
postgress
postmaster
both eating 96% of cpu usage? Is there a way to pin-point or see ...
0
votes
1answer
39 views
high cpu linked to unresponsive websites?
I have two websites on an ubuntu server. None of them are responding when I try to access them on a browser. So I sshed into my ubuntu server and ran the top command. I noticed that three processes ...
0
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0answers
33 views
How to set the number of maximum cores Minecraft can use?
I am working on a simple and open source Minecraft webadmin that makes starting, stopping and killing possible over a web interface and I bumped into a problem. I want to maximize the number of CPU ...
1
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2answers
96 views
Maximum CPU frequency stuck at low value
I have observed a problem with Ubuntu 13.04. The problem was not there on 11.10 I used earlier. The maximum CPU frequency is stuck at 2GHzon my Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz (Dell Lattitude ...
14
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6answers
11k views
Is it normal for compiz to consume 40% of my CPU with no other programs running?
When I have no other programs running, compiz takes up at least 40% of my CPU.
Is this normal? If it is normal, is there anyway I could make this program take a smaller percentage?
1
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3answers
57 views
CPU Upgrade Issue
Is it possible to upgrade CPU (ex: from AMD Athlon II X2 to Phenom II X4) without any problems? I means just replacing the old cpu with new cpu at same socket and booting ubuntu with any problems or ...
0
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1answer
56 views
is intel turbo-boost option good for life-time?
here is intel-core-i-7 with 2.8 Ghz resp. 3.5 Ghz as turbo-boost option.
with this question I refer to this link:
Does Intel turbo boost work in Ubuntu?
Is option of turbo-boost not harming the ...
1
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3answers
1k views
Which CPU will work best with Ubuntu?
I'm choosing between two laptops with an AMD A6-3400 and Intel Core i3 Sandy Bridge. I want to know which CPU is better with Ubuntu as in performance? Using laptop for browsing and programming.
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0answers
94 views
High CPU temperature when using GNOME
I have ASUS Extensa 4220 laptop.If I install Kubuntu (any KDE-based), then the CPU temperature looks normal for a long time (now it is 74 degree Celsius). But when I install GNOME-based distros, then ...
0
votes
1answer
152 views
Should I install amd64-microcode? [closed]
This is my system:
AMD Phenom II x4 960T (unlocked to 6 cores)
8GB 1066 DDR2 RAM
Gigabyte Radeon HD6670 1GB DDR3 (AMD Catalyst 13.4 propriety driver)
Ubuntu 13.04 at 1920x1080 60Hz
Dual boot with ...
1
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1answer
45 views
Ubuntu Compatibility
I'm in the process of building a computer for a customer who has requested Ubuntu 13.04 to be installed could someone tell me if the following components are compatible.
CPU: Pentium G2020
...
3
votes
2answers
2k views
Overheating problem on Ubuntu 13.04
I have recently upgraded Ubuntu to 13.04. Since this time I have overheating problems with CPU and graphic card. I also can't use fglrx drivers, because Ubuntu does not work properly, so I use the ...
2
votes
1answer
43 views
Getting cpu usage realtime
When I execute following command to get cpu usage , I get nice + user cpu usage.
top -b -n1 | grep "Cpu(s)" | awk '{print $2 + $4}'
Output:
14.5
Here I am getting problem is that the output ...
2
votes
1answer
96 views
8 CPU and one is at ~100% all the time
With :
Ubuntu Release 12.04 (precise) 64-bit
Kernel Linux 3.2.0-29-generic
Intel® Core™ i7-3635QM CPU @ 2.40GHz × 8
The first CPU is always at ~70%-100% with nothing big running and it is making ...
0
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1answer
321 views
Why does CPU usage spikes to 90% and more after wake from suspend on Ubuntu 13.04?
On an Acer C7 Chromebook running ChrUbunutu (not CROUTON) I noticed a problem after moving to 13.04.
If I put the system to sleep and then wake it up both CPU cores spike to 90%+ usage. Soon after ...
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5answers
442 views
Ubuntu 13.04 ram and CPU maximum support? [closed]
I'm learning about ubuntu, but I do not know the ubuntu 13.04 Ram and CPU support up to how much??? hope you help me
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4answers
33k views
Kernel requires x86-64 CPU, but only detects i686 CPU. How can I install Lubuntu/Ubuntu?
Heyy guy, okay im trying to install lubuntu on my laptop (sorta old 2005). [Laptop stats: Intel(R) Celeron(R)M CPU 410 @ 1.46 GHz 1.47GHz, 448 MB of RAM]
i press install and message appears, "this ...
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0answers
84 views
rhythmbox-metadata uses 100% cpu
Everytime I start rhythm box the process rhythmbox-metadata starts up and uses 100% cpu on one core, causing the computer to heat up and the fans to start rotating hard. I have an external drive with ...
0
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2answers
59 views
Which ubuntu Version should I install In this Processor type ? AMD64 or x86_64 [duplicate]
root@cmovel-lb01:~# lscpu
Architecture: x86_64 >>>>>>
CPU op-mode(s): 64-bit
CPU(s): 4
Thread(s) per core: 1
Core(s) per socket: 4
CPU ...
0
votes
1answer
1k views
Ubuntu 13.04 - High temperature [duplicate]
I've always used Ubuntu. I installed the version (13.04) and I have a problem: the CPU's temperature is high also in normal condition.
This is the response of lm-sensors:
acpitz-virtual-0
Adapter: ...
0
votes
3answers
62 views
Does using 2 OSs affect CPU speed?
I have windows 7 already installed on my laptop and I would like to know if installing ubuntu as well would affect my processor's speed. Here are the specs for the processor: ...
1
vote
1answer
87 views
How to Limit the CPU usage for a process and its Children wether there is another process demands resources or not
i was wondering about something like CPUlimit to limit the process CPU usage but i am aiming to apply the same percentage of usage for its children processes too automatically without adding them ...
0
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0answers
30 views
Is there something Limits the CPU usage for a process and its Children [duplicate]
i was wondering about something like CPUlimit to limit the process CPU usage but i am aiming to apply the same percentage of usage for its children processes too automatically without adding them ...
0
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0answers
141 views
Minimum and maximum cpu frequency are equal
I just noticed my laptop stared working considerably slower. I am using an updated 13.04, though the issue did not start right after the upgrade. After tracking down the issue I noticed that both ...
0
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0answers
42 views
Overheating: how can i monitor it?
i've got a pc desktop with AMD Athlon 5000+ and ATI Sapphire 3850. I think both of them have got overheating issue, because im always with a virtual machine (virtualbox) on. In fact, i don't think ...
0
votes
0answers
94 views
High CPU Temperature and fan speed noise [duplicate]
I am using Ubuntu 13.04. In which I am getting High CPU temperature and fan speed from beginning of the system. Temperature remain > 62°C. I am using Jupitar but it's not helping in case of mine. ...
23
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5answers
6k views
Any way to check the clock speed of my processor?
Is there any way to check at which clock speed my processor is running?
I have already tried cat /proc/cpuinfo but the clock speed I'm running isn't showing. I know Ubuntu 12.04 (Precise Pangolin) ...
9
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4answers
6k views
What can I do to prevent Ubuntu from overheating my Notebook?
I have an easynote tj65 (2.1 ghz dual core with Geforce GT240M) running Ubuntu 11.10 and Windows 7 in dual-boot-mode.
While Windows 7 doesn't have any comparable issues, Ubuntu is making my notebook ...
5
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1answer
477 views
Can't start Ubuntu - Package power limit notification
I used Ubuntu 12.10 on my current laptop for a couple of weeks without problems... Now there is no way to start it.
When I try to boot Ubuntu during the startup process I get this error:
[CPU0]: ...
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0answers
43 views
Having trouble installing Ubuntu
I am trying to install Ubuntu 12.04 32-bit, but every time I try to install it, this message comes up: stopping cpu interrupts balancing daemon
It's accompanied by the screen flickering between the ...
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0answers
31 views
How to investigate scheduler issues?
I have a server process that should runs multiple threads at close to 100%, each on its own CPU. When I run the process on a RHEL box, the CPUs in question appear to stay pegged at 100%, according to ...
6
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3answers
4k views
How many maximum CPUs does Ubuntu support by default?
I think this is kernel dependent and probably will change over time depending on the kernel a release uses, correct me if wrong
I'd like to know two things for all the currently supported Ubuntu ...
0
votes
1answer
124 views
CPU fan deactivated during 11.10 installation
I have tried to install Ubuntu 11.10. During the installation process the CPU fan was switched off. Some minutes later the notebook switched itself off.
How could I switch the fan manually on?
Are ...
0
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0answers
31 views
How to create virtual cpu/threads?
is there any way I can make Ubuntu think there is more CPU’s/CPU threads than there actually is?
For example Making a 2GHz dual-core appear to the Entire system, including the kernel as a 1GHz ...
