Questions tagged [multi-core]
The multi-core tag has no usage guidance.
26
questions with no upvoted or accepted answers
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2
answers
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multi-core CPU usage
I am using the Windows Subsystem for Linux (WSL), and I am unexperimented in the capabilites of linux.
Recently, I've been wanting to get better insight in the CPU usage of processes, but I am getting ...
4
votes
0
answers
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How to enable all the cores available in ubuntu 18.04
When I executed the command:
sudo lshw | grep core
It's showing following output:
cores:2 cores_enabled:1 threads:2
How can I enable both cores? (Ubuntu 18.04).
Edit:
No options visible in BIOS
...
3
votes
0
answers
186
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At what point should I worry about high temperatures?
I just got a new system76 galago pro. It's nice. It has 8 threads and lots of memory. I do a lot of multicore computing in R, and a lot of my jobs are borderline between something that I'd do ...
3
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0
answers
138
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One of my two cores suddenly flatlines at zero percent
I've been using Ubuntu for about three months, and twice now the first core of my dual-core laptop suddenly flatlined at zero percent for no apparent reason, while the second one seemed unaffected. ...
2
votes
1
answer
228
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CPUs are overused with internet browsers, maybe Ubuntu+i5+JS don's work well
I'm having trouble with the Ubuntu 14.04 on PCs Intel NUC i5 8 GB RAM SSD HD.
They are used mostly with Google Spreadhseets and are high usage of internet browsers and JS applications.
PCs are quite ...
2
votes
0
answers
3k
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Why aren't all of my CPU cores always detected in ubuntu 14.04 with an Intel Core Duo 2 CPU?
I'm using Ubuntu 14.04.2 LTS with kernel 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux.
Computer model: iMac Late 2009 ( https://support.apple....
2
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0
answers
128
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Reserving a core for system processes to prevent wedging
I am working on a multi-core machine (running Ubuntu 14.04 server), where some programs seem to use up all resources causing wedging. Is there a way I can reserve one core for the os processes to ...
1
vote
0
answers
87
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OS Schedules almost all work on a single CPU core after upgrading from Ubuntu 20.05 LTS to Ubuntu 22.05 LTS
As stated in the title, my OS automatically schedules almost all work on a single CPU core after upgrading from Ubuntu 20.05 LTS to Ubuntu 22.05 LTS.
I've provided a few screen shots from htop to ...
1
vote
0
answers
112
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why the number of cores is different than expected?
I am trying this solution to a similar answer , in order to determine how many cores my systems have
so I try the following commands
1)
cat /proc/cpuinfo | grep processor | wc -l
cat /proc/cpuinfo | ...
1
vote
1
answer
361
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AMD A10-4600M has 2 cores instead 4 problem!
I have Ubuntu 19.04(this problem occurs in 18.04 and 12.04 too), AMD-4600M processor.
A lscpu command, settings and /proc/cpuinfo say that my processor has 2 cores, 2 threads, 2048M l2 cache. But I ...
1
vote
0
answers
674
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OS showing only one processor
I have 4 core processor but the system is only showing one core.
Note: I am using acpi=off in grub entry. If I don't use it, my system crashes.
What to do now?
$ inxi -C
CPU: Single core Intel ...
1
vote
0
answers
984
views
How to forcefully run two thread on two cores
I have a C Code in linux, in which I have two Pthreads. What I have to do is that, I want every thread running on different Cores.
For Example, I have two cores, so one thread should execute on core1 ...
1
vote
0
answers
2k
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Support for cores revisions 0x17 and 0x18 disabled by module param allhwsupport=0
I was wondering if there is a fix for this problem, as every time I boot my laptop this message comes up. Is there any way to get rid if it? Thanks.
1
vote
1
answer
493
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How can I create ISOs quickly using all 16 cores of a Parallella board?
I have a large video collection (over 900 disks). Using Handbrake to rip to .mp4 is painfully slow, especially when ripping BRD. I found another solution that will play back ISOs, but I want to be ...
0
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0
answers
70
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how to get dar with multi-threading enabled
I'm using a on a System76 Silverback desktop machine dual Xeon with 16 cores (32 hyperthreads) with large hard drives, and thinking to use dar(1) for my backups. I see that the man page mentions its ...
0
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0
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Round Robin Query Reply
Hi Dear i set multipe ips on ubuntu 18 in netplan i want send any network dns qury on ubuntu by round robin protocol multiple ip
first query by ip 1
second query by ip 2
third query by ip 3
How do ...
0
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0
answers
400
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Ubuntu 20.04 Multicore CPU scaling/frequency issues on i7-10510U
Firstly, I will state my specs:
Intel i7-10510u with Intel UHD 620 graphics, AMD Radeon 610 dGPU, 256 GB Kioxia SSD,8GB RAM
I have a Dell Vostro 3590.
From my observations, individual cores do boost ...
0
votes
2
answers
480
views
How to manage number of cores used on my institution's server
I'm using a remote server where I'm not supposed to request more than 24 of the 100 cores.
I'm running a couple of R scripts which seem to be using too many...
How can I tell, in htop, how many cores ...
0
votes
0
answers
457
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Parallel processing isn't working with multi cores in ubuntu 20.04
My laptop has 4 cores.
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 39 bits ...
0
votes
1
answer
199
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One CPU works more harder than others
Recently I have a problem with my CPU. Without opening any other program, a CPU starts working harder than normal.
Characteristics:
0
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1
answer
2k
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Why is Libreoffice using only one core?
When I use libreoffice calc for big table (around 100 000 lines), when I make operations on the filters, libreoffice freezes for some times while calculating, and i've seen in the CPU use that it's ...
0
votes
1
answer
640
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Ubuntu 18.04 Xeon E5450 on p43-a7 socket 775 only one core working
I am new to Ubuntu, so i screwed something and idk what. After manually installing nvidia drivers, my Ubuntu recognize only one of four cpu cores.
Architecture: x86_64
CPU op-mode(s): 32-...
0
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0
answers
502
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Ubuntu automatically clean zombie and sleeping process
Is there a way how I can cleanup zombie process automatically? How can I clean up the zombie and sleeping process automatically?
0
votes
1
answer
498
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Application does not display with Core i5 7400
I'm using a core i5 7400, no off board video card, the motherboard is Asus B250M-PLUS-BR, Ubuntu 16.4 16.10 or 17.4 which has the bug of not opening in the desktop some application, for example ...
0
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0
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674
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How can I experience CPU steal time on co-existent VMs?
I've already had an Openstack cloud with two compute nodes each having 8 physical cores. I intend to make a scene that two or more VMs contend for the same shared core on a single host so CPU steal ...
0
votes
2
answers
665
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my internet is suddenly slow
im running Ubuntu 12.10 and it works like a charm... but one problem, when i updated my software everything seemed OK until i noticed that my internet speed very slow. i had about 5-6 MBPS but it ...