Questions tagged [cpu-usage]
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1
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Regular CPU overload on videocalls
I have this reoccurring problem in a variety of videocall platforms. When I'm in a call the CPU usage repeatedly goes up to 100% for around 1 or 2 minutes. During these episodes, the whole system is ...
1
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1
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166
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How to measure actual CPU utilization in Linux for multi core applications?
I have a computation intensive process that I need to run multiple times on a multi-core processor but "top" isn't showing utilization or load in a useful way.
For example, imagine my task ...
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0
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39
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CPU affinity not following cpuset
When I run taskset -p <pid> of a process I am getting something like this back:
# taskset -p 1078
pid 1078's current affinity mask: 3f
And it keeps changing what it reports, sometimes it's 5f, ...
0
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0
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48
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Kernel APIs to disable/enable CPU cores within a driver module
I have a linux kernel version 6.8.0-57-generic (Ubuntu Jammy).
I want try disabling and enabling the cores in the CPU through the linux kernel module (from kernel space) What is the right way to do ...
1
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0
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54
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ARM64 commands take seconds to finish
I'm on an ARM board running Linux. The hardware is a vehicle domain control board which has 6 core ARM Cortex-A78AE and some machine learning cores. I don't want to reboot it because It might be a ...
1
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1
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244
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What exactly does %wait in pidstat mean?
Environment
Ubuntu22.04
sysstat version 12.2.0
Number of logical CPUs 16
man pidstat shows the following, but I would like to know more specifically about the denominator and numerator of %wait.
...
0
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0
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33
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Linux kernel cgroup v2 CFS - cpu throttled_usec accounting?
In Linux kernel cgroup v2’s CFS scheduler, how is cpu.stat throttled_usec accounted when a cgroup with multiple threads gets throttled during a single quota period? Specifically, is throttled_usec ...
0
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2
answers
283
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Process called lsof using too much CPU
I keep having
lsof -w -l +d /var/lib/php5
eating up my CPU
I want to know who is triggering it and what does it have with php5 ...
0
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0
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39
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What is the meaning of columns in the table displayed by cpupower-monitor?
Running sudo cpupower monitor on Ubuntu 24.04 I'm getting:
| Nehalem || Mperf || RAPL || Idle_Stats
CPU| C3 | C6 | PC3 | PC6 || C0 | Cx | ...
1
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1
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100% CPU on 4 of 8 cores on Oracle Linux
I have a desktop computer (Intel i4770) running Oracle Linux 7.9 with kernel 4.1.12-61. I usually keep it off and only turn it on on the rare occasions when I need to test something. A month or so ...
0
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1
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130
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Why is the Linux CPU stalling when having multithreaded memory writes?
HW Specs:
CPU: 64 Cores, 128 Threads, AMD Ryzen Threadripper Pro 5995WX
RAM: 512 GB, Manufacturer unknown, will try to provide if needed
Linux Specs:
OS: Ubuntu 22.04.4 LTS
Linux Kernel: 5.15.0-...
1
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1
answer
371
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Btop - What is the LAV value mean?
I have a KVM guest and inside it I am running vnc server. I have a ssh tunnel that I connect to it using tigervnc viewer. Everything works good for it except one issue. Using Chrome (using X server), ...
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1
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(Solaris) Ram CPU monitoring script is grabbing incorrect cpu ram utilization values
host=$(hostname)
email="[email protected]" # Change to your desired email
subject="Attention!!! Health check Failed on $host"
echo $(date)
# CPU use threshold
cpu_threshold=0
# ...
1
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0
answers
564
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KDE lockscreen (kscreenlocker_greet) high CPU usage
After KDE plasma 6 update, my CPU usage increased significantly while on lockscreen.
This caused the processor to reach high temperatures and lose electricity unnecessarily. Main processes that caused ...
24
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2
answers
6k
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High CPU usage by process with obfuscated name on Linux server – Potential attack?
We have been experiencing high load issues on our Linux server recently. Upon checking with the
top
command, we noticed an unknown process with a garbled command name (as shown in following images; ...