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Questions tagged [process-priority]

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Running time-critical executable (CPU+GPU) I receive huge time divergence among execution runtimes

Under Ubuntu 20.04.3 LTS I am running a multithreading application that is using both CPUs and GPU. My question is that among sequencing identical runs, I get huge time divergence among execution ...
Maverick's user avatar
  • 101
0 votes
1 answer
1k views

Ubuntu shows as first priority boot option but keeps loading into windows, which is second priority [duplicate]

I have already installed Ubuntu 20.04 and made it first boot priority on my computer (asus 2019 zenbook) but my computer keeps jumping into the second boot option which is Windows 10.
Brendan Browne's user avatar
0 votes
1 answer
705 views

Task Manager Won't Let Me Set Task Priority [duplicate]

When I go into task manager, everything acts normal except for my laptop being slow. But when I select priority, and try to change it, it gives me the massage "An error was encountered by setting ...
Phoenix8753's user avatar
4 votes
1 answer
2k views

providing vm priority for kvm based virtual machines

Is there any way I can prioritize my VMs based on their resource (vCPUs, memory etc.) usage in a kvm/qemu based virtualized environment so that I can allocate more cpu/memory to some VMs which need ...
Sanjay K.'s user avatar
0 votes
1 answer
50 views

If the priorities of 2 jobs are the same, will the second job wait until the first one finishes?

Let me suppose a system has one cpu. If 2 jobs started at different times but the priorities are the same(20, 20), the job that started later than the other will wait until the earlier one finishes? ...
Crispy13's user avatar
  • 103
1 vote
1 answer
570 views

Change permanently the priority of all process started by user

I have an application on my server that needs to be given more resources and priority than everything else. The easiest thing to do would probably be to raise the priority of the two users it runs as ...
unixandria's user avatar
1 vote
1 answer
99 views

Bios problems when attempting to install Ubuntu

The bios on my HP pro 3120 MT does not contain a usb option. How do I install ubuntu? (PC needs to be formatted. Not planning to keep windows 7)
kimbetbaby's user avatar
1 vote
1 answer
2k views

How to change priority of program in system monitor?

I'm trying to change priority of processes so the games I play have a higher priority for performance reasons, but I cant figure it out how to that. I've done some searching and found that you have to ...
tacocat's user avatar
  • 19
0 votes
1 answer
2k views

Niceness and Priority of Processes

According to the some resources I have read, the process with low nice value has more priority. Because it has more priority, CPU allocates more time for that process. However, it sounds a little bit ...
Goktug's user avatar
  • 123
0 votes
1 answer
2k views

How can I make a program start at a higher priority? [duplicate]

I'd like to set my pulseeffects to start up at a higher priority automatically after booting up the pc. It works as a workaround for couple small issues but setting it manually every time starts to ...
user avatar
1 vote
0 answers
54 views

mysql service always running, not schedule by Kernel scheduler?

I would like to ask a question: I have attached screenshot of TOP command of my server. Mysql is always on top and running. While other processes runs/sleeps by ubuntu Scheduler. Even the process ...
waleed's user avatar
  • 11
6 votes
2 answers
2k views

How to change "niceness" while perfoming top command?

I know that I can change the niceness using this command: renice [-n] priority [[-p] pid ...] [[-g] pgrp ...] [[-u] user ...] But it would be much more convenient if I could do it while scanning the ...
Computer Lover's user avatar
156 votes
3 answers
183k views

Process 'niceness' vs. 'priority'

When running top, I can see this (shortened) example output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4586 ipc-adm+ 20 0 1303900 605152 92844 S 30,6 29,3 3:...
Byte Commander's user avatar
  • 108k
1 vote
1 answer
85 views

Priority goes back to 20 after changing it to -10

I want to change the priority of a process in LTS 14.04. I used sudo renice -10 -p PID It worked fine, but after a while the priority of that process goes back to 20. What should I do to get rid of ...
efrem's user avatar
  • 343
0 votes
1 answer
261 views

Which niceness to give to prevent freezing?

If I wanted to give my main system, desktop cinnamon, the highest priority, which PID should I set this for? The reason is because I have a program that runs for days and would hog up all the ...
Ahdee's user avatar
  • 131
2 votes
1 answer
2k views

top says iwlwifi's pr is -51

My understanding is that the pr value is the nice +20. So how can a process have a pr value less than 0? PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 619 root -51 0 0 ...
blanket_cat's user avatar
  • 1,524
3 votes
1 answer
894 views

Is I/O priority propagated to child processes?

I recently found out about ionice. If I run a script which in turn runs processes will the priorities of the child processes be equal to the parent script? If not, is there a way to set priorities for ...
topher's user avatar
  • 348
0 votes
1 answer
534 views

What order are config files loaded under linux when there are multiple sources?

I understand the main principle that local configuration files precede global /etc/ configuration files. What I really need though is some more detail on this because sometimes it's not obvious. The ...
Jonathan's user avatar
  • 656
1 vote
2 answers
2k views

change priority (nice value) of a program permanently

i am trying to change nice value to (-20) permanently for uget-gtk by using gnome-system-monitor. But when i end process and restart it again, nice value by default got (0). Is there a way to set ...
raz's user avatar
  • 1,862
0 votes
1 answer
290 views

changing boot priority to external disk

I just installed xubuntu. I dual booted it, my main os is windows 7. I installed ubuntu onto a external hdd and is my second boot priority so since i use it the most, it is a hassle to change every ...
Billy's user avatar
  • 17
2 votes
2 answers
25k views

How to increase the priority for a task permanently in linux machine?

How to increase the priority for a task in linux machine? What I've Done So Far: After small research i found that we can increase the priority to a task using NICE command and if we want to increase ...
Raj's user avatar
  • 121
10 votes
2 answers
3k views

How can set disk IO priority automatically?

If I use some IO intensive application (like Virtualbox, Steam data verification or even dd) my system becomes almost unresponsive. Despite all being started with normal priority, they make the ...
Salem's user avatar
  • 19.8k
18 votes
5 answers
12k views

How do I limit Dropbox's activity on the hard disk?

On startup, Dropbox runs files indexing, which brings the system pretty much to a stand still for three minutes. Is there a way to restrict Dropbox from accessing the hard disk, or decrease the ...
aiao's user avatar
  • 348
1 vote
0 answers
989 views

What priority to use calling sched_setscheduler

I am writing a server that I do not want preempted by any other user process or "low priority" kernel process. I'm using code like this: struct sched_param sched_param; memset(&sched_param, 0, ...
laslowh's user avatar
  • 241
2 votes
2 answers
8k views

How to adjust IRQ priority in Ubuntu 12.04?

The question says it all. I see some tutorials online for earlier editions of Ubuntu, but am having a hard time for 12.04.
Paul's user avatar
  • 337
2 votes
1 answer
869 views

How does process priority influence a process

Assuming we have read the following question: Change niceness (priority) of a running process and we know about root, non-root permissions: What actually happens when a running process (Through ...
Luis Alvarado's user avatar
3 votes
2 answers
2k views

Cant change niceness even after editing limits.conf

so what i did: in the terminal i typed: sudo su (used pass) then typed: nano /etc/security/limits.conf went to bottom and added: USER - nice -20 (with my ...
Nathaniel de Vries's user avatar
1 vote
1 answer
128 views

Why do important system processes exhibit lower valued priorities?

I'm still learning about Linux. As a Linux distro, Ubuntu is blessed with the ability to multi-task, the concurrent execution of programs. And these programs have processes, taking up their chunk of ...
jjkim's user avatar
  • 355
5 votes
2 answers
5k views

Do all apps start with a normal priority on the system monitor?

I noticed that on my system monitor, one of my processes, titled pulseaudio, had a very high priority, while all of my other running apps had a normal priority. I don't recall ever changing it, so it ...
Jiskya's user avatar
  • 2,165
2 votes
1 answer
2k views

How do priorities work on ubuntu's 12.04 system monitor?

I noticed in my system monitor app, on the "Processes" tab, that one can change the 'priority' of a certain program. What specifically would this do? (I'm new)
Jiskya's user avatar
  • 2,165
0 votes
1 answer
75 views

Do the tasks on the active workspace have higher priority?

For this time I won't bother anyone with technical problems. I just had a philosophical question. Well it's in the title, I guess it's clear enough :p Well actually the question is more general: what ...
Julien Gorenflot's user avatar
2 votes
3 answers
741 views

How to accelerate opening an application

I want to be able to open an app faster than the normal time it takes to open it. What kind of script of changes do I have to do to make it so that when the app starts to open it receives more ...
Luis Alvarado's user avatar
4 votes
1 answer
4k views

web browsing vs. torrent traffic, and bandwidth priority?

recently i did download big torrent files. (120 Gb). and i need to seed them back to at least 1.5 ratio. my upload speed is 130 Kb/s max. the problem is that i need to seed them as fast as possible. ...
suli8's user avatar
  • 2,975
7 votes
1 answer
8k views

Why the process priority of Pulseaudio is -11?

Why it so low? Sometime when cpu is high load sound through Pulseaudio becomes choppy. I think this happens because process priority of Pulseaudio has so low value. So why it so low by default if it ...
Dmitry Misharov's user avatar
99 votes
7 answers
114k views

Change niceness (priority) of a running process

Is it possible to set a new nice level of a running process with a known id? Does this operation require root access, or just being the owner of the process?
Adam Matan's user avatar
  • 12.6k
6 votes
1 answer
2k views

Advanced System Monitor/Task Manager?

When using kubuntu I noticed that the standard task manager/system monitor was a bit more capable than gnome-system-monitor, is there a more advanced system/task monitor for ubuntu that is based on ...
instanceofTom's user avatar
9 votes
2 answers
12k views

Can it be harmful to grant jackd realtime priority?

I am apt-get installing Ardour, a sound mixing program, just to try it out. Installing Ardour also installs JACK, a dependency. As part of the JACK installation script, I get the following dialog: ...
SuperElectric's user avatar
1 vote
2 answers
824 views

How to set up video and audio players to use realtime (or close) priority?

I use raw mplayer to play video, DeaDBeeF to play audio and Skype for VoIP. Heavy CPU-consuming processes (like rendering a website in Firefox, redrawing a Java IDE window or compilation) cause ...
Ivan's user avatar
  • 57.5k