Questions about identifying processes, about listing them, sending signals, killing them, assigning and using process priorities.

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6
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1answer
466 views

How to change low process priority?

I have just set Ubuntu 12.04 64bit with Cinnamon desktop and 3.5.0-030500 kernel on my new laptop with IvyBridge i7. I decided to test its performance by running a single threaded CPU-hungry program ...
3
votes
1answer
66 views

Is it safe to remove a process folder from /var/run/?

Is it safe to remove a process folder from /var/run/ if I think it has got wrong permissions, will it be recreated by process as before? Do I lose any information by deleting /var/run/<process ...
3
votes
1answer
143 views

Is there a way of automatically suspending processes that are running in unfocused workspaces?

Is there a task manager (or an option) that can automatically suspend processes (or slow them down) in unused workspaces? For example I have Chromium in one workspace and it takes quite a lot of CPU ...
2
votes
1answer
113 views

What is Shotwell doing in background permanently

My mate is a new ubuntu user, primarily as alternative to not need to upgrade to windows 10. He uses his machine mainly for archiving and reworking of hundreds of photos as he is a hobby photographer. ...
2
votes
1answer
48 views

how to know the use of my applications?

I want to know how long my programs have been used. For example if I use my web browser i want to know the start and the close time to obtain a total of use time. Basicly I want to know when an ...
2
votes
1answer
156 views

What is the “Browser” process?

What is the Browser process? Is the process safe or malicious? Thanks for help, Top results:
2
votes
1answer
506 views

What can I do when the Network Manager tray/panel icon stops responding?

Sometimes the networking program (controlled via drop down menu from the wireless symbol in the top right of the screen) hangs on my laptop (ASUS U36JC). I have tried "sudo killall NetworkManager", ...
2
votes
1answer
537 views

Getting the name of the process, that corresponds to the active window

How can it be did using Python(in Ubuntu)?
1
vote
1answer
252 views

Why is khubd process using too much of my CPU?

analyzing the process manager I found that the khubd process uses more CPU than other processes all that are running. It uses at least 25% and even uses around 40%. Does anyone know what this process ...
1
vote
1answer
95 views

Switch tasks on active process to new process

What I'm going to explain is really about nginx processes, so maybe it can be done in nginx, or maybe its a Linux feature. In anyway, I hope it's possible. I have an ningx process running, that looks ...
1
vote
1answer
109 views

Creating a script involving the memory usage of processes

How can one create a bash script that displays the sum of memory usage for the processes which have PID<100?
1
vote
1answer
336 views

Can I connect to running autostart python script?

I am running Lubuntu 13.10 an have a python script that is run on boot through ~/.config/lxsession/Lubuntu/autostart. The script startes a web application and outputs various information to terminal ...
1
vote
1answer
89 views

How would I make this bash script that displays certain system processes related features?

Basically I need to make a bash script that acts as a handy tool for diagnosing performance issues. The script needs to first determine each unique process owner on the system, and then for each user ...
1
vote
1answer
680 views

Tons of Processes Running

I have an Ubuntu 13.04 running on a P4 computer with 1 Gb of RAM (I know, I need to get a new one). I recently have been getting crashes, and a lot of my memory is being used. So I looked in Top and ...
1
vote
1answer
163 views

How to use wired and wireless interfaces simultaneously?

When creating any socket, we don't provide a device name (like eth0, or wlan0). On my laptop, I have a wired interface (eth) and a wireless interface (wlan). I want to run one process on each ...
1
vote
1answer
424 views

gnome-settings-daemon extensively reads/writes hard-disk

After upgrading to 11.10, after each login the computer becomes slow and the hard-disk noisy (sounds like reading/writing/defragmenting). When I "stop" the process gnome-settings-manager in the system ...
0
votes
1answer
14 views

How to set affinity

I want to execute 2 different programs on 2 different cores. I used taskset command to set affinity and assigned different cores to both programs. But I want to know whether these cores will be ...
4
votes
0answers
706 views

Why does f.lux uses 100% of a cpu core?

I installed f.lux on Ubuntu 14.04, The gui doesnt work properly but I am able to access settings through the xterminal. While looking in the system monitor, it can be seen that a process called "xflux"...
3
votes
0answers
34 views

Which mysterious process sent data out of my computer?

Using vnstat, I observed a lot of uploaded data from my computer and I don't know which process sent data out of my computer. I installed nethogs to monitor live data transfer but seems nethogs ...
3
votes
0answers
65 views

Suspicious processes starting with “[?/-]” with after upgrading to trusty

I have just upgraded to Trusty (this may not be relevant). I fired up top, and noticed a heap of processes running as root that I had not noticed before. For example: 234 root 39 19 0 ...
3
votes
0answers
70 views

How to log processes in daemon-mode?

I would like to save the standard output of the program motion in a text file. If I don't use motion in daemon-mode I would simply do it by: motion > log.txt But what is the equivalent when I ...
2
votes
0answers
187 views

Is a Beowulf cluster a solution for me?

Background I'm an undergrad working on an scientific experiment. Till now I was pilot testing our one of the program on Ubuntu 12.04 and now I need to deploy it. The PC on which I tested the program ...
2
votes
0answers
616 views

Stopping e-calendar-factory and e-addressbook-factory

How can I prevent e-calendar-factory and e-addressbook-factory from ever starting? If I manually kill the processes they just start up again? Between the two they are spamming google with 100 packets/...
2
votes
0answers
628 views

ps: show thread and display as ASCII “forest”

My favourite ps invocation is: ps -efww ef as I need to watch all processes (-e), get extended information about them (-f), see the environment (e) they operate within, wrapping lines (-w -w) so I ...
1
vote
0answers
19 views

Monitor CPU and bandwidth usage of cpu and save to csv

I would like to monitor a specific process. I need to know timestamp, CPU usage (%) and Bandwidth (tcp upload and download in % or byte/s) of this process. I have tried something like this: ps -Ao ...
1
vote
0answers
41 views

HIbernation or Suspending & Restarting for NON-root users

My purpose is to run a main shell script which calls many sub-processes like other shell scripts, perl sources, and compiled c++ files. I want to run the main shell script "run.sh" at some line in ...
1
vote
0answers
260 views

Allowing multiple programmes to access /dev/video0 simultaneously?

I've just recently noticed that video from my webcam does not always work in a programme, so long as something else is accessing it. Let's explain this with some usage examples: I'm running uTox (a ...
1
vote
0answers
252 views

Unusual behave - Virus Like

I am facing a very strange behave on my Ubuntu 14.04 LTS box. I have an IPTV system providing cable TV and Internet through a router. My Ubuntu box is connected to the router and provides file serving ...
1
vote
0answers
1k views

Process “/bin/sh -e /proc/self/fd/9” - what starts it and why?

I have a process /bin/sh -e /proc/self/fd/9 that runs on my system. sh -e /path/to/file in dash (which sh is symlinked to on my Kubuntu 14.10) just tests for existence of a file. In /proc/self/fs I ...
1
vote
0answers
262 views

incron tab won't fire

I'm trying to get incrontab running, but it won't work. This is the error I get: access denied on ~/propt/apo/feeds - events will be discarded silently and this is the line in incrontab I want to ...
1
vote
0answers
125 views

What would cause a system freeze from navigation to /proc?

This is really driving me crazy, if I pull up nautilus and navigate to /proc, my system will completely freeze up. The only way to get out seems to be to SysReq RSEINUB, but sometimes even that doesn'...
1
vote
0answers
78 views

Java process stays open

I like playing Minecraft but after I close Minecraft, the java process stays on and I need to go into the system monitor to kill it or else there will be a lot of java processes on slowing down my ...
1
vote
0answers
106 views

getting grub problem on my new laptop with preinstalled ubuntu software and just cant sort it out

got new laptop with preinstalled ubuntu.but now i m getting few lines as gnu grub version 1.99-21ubuntu3.1 minimal BASH-like line editing is supported.for the first word TAB listspossible command ...
1
vote
0answers
622 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, ...
0
votes
0answers
17 views

Understanding the reason behind a freeze using system logs to file bug

My Ubuntu laptop just froze a few minutes ago (like it is frequently doing) making me reboot it using the hardware forced way. I would like to know the cause behind it so that if necessary I can file ...
0
votes
0answers
14 views

WCHAN = 0 for a sleeping task?

I am a little confused about the status of a process I have. It looks like this: $ ps -eal | head -n 1 ; ps -eal | grep perf F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD 4 S ...
0
votes
0answers
28 views

Executing commands in an elevated bash process by writing to the standard input of its parent process

I have a simple bash script 'bash.sh' that starts another bash instance using pkexec. #!/bin/bash bash -c 'pkexec bash' When executed this shows a prompt for the user to enter their password. The ...
0
votes
0answers
32 views

Use MOSIX for process migration

I am using MOSIX on Ubuntu 14.04 LTS for process migration.I have installed MOSIX successfully on Ubuntu. Now I want to form a cluster of two nodes to perform premptive process migration.But I dont ...
0
votes
0answers
32 views

Login loop after killings process

I'm having an annoying issue. I terminated some processes from another users, which were holding me back changing the user's home folder location. I killed 2 processes (I do not remember the actual ...
0
votes
0answers
59 views

Kill process: SIGKILL does not work

There is a strange thing that never happened to me. kill -9 PID does not work. The process is still there. I tried also with htop -> F9 -> Enter but nothing. How can I resolve this problem? ...
0
votes
0answers
145 views

Ubuntu: i can't kill some processes and Apache doesn't restart

I can't restart Apache: if i try to start it, the error is this: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down ...
0
votes
0answers
103 views

Strange Unama pocess in top

I am seeing a strange process called "unama" in my top program's output, however, I cannot seem to find any reference about this process on Google and it is consuming a fair amount of resources (30% ...
0
votes
0answers
219 views

Start a background process, write to stdin and read from stdout without blocking

I have a program which reads from stdin and writes to stdout. In my example it is cat. I want to have three scripts to do something like the following: start.sh cat would create a background process ...
0
votes
0answers
386 views

“socat” process using 100% of a CPU core on Ubuntu 15.04

Recently, my computer, which is running Ubuntu 15.04 with the GNOME desktop environment installed, has started running slowly. I wondered why this was happening and looked in gnome-system-monitor, ...
0
votes
0answers
46 views

Killing the process started with upstart

I use upstart to launch rails app with unicorn. This is the conf file in /etc/init/unicorn_rails.conf. # simple uWSGI script # http://uwsgi-docs.readthedocs.org/en/latest/Upstart.html description "...
0
votes
0answers
43 views

How to get the terminal (xterm with any emulator) to properly close processes?

I noticed that my terminal in ubuntu 15.04 (default terminal emulator, or terminator, so it appears to be an xterm issue) doesn't seem to properly close processes. For example, running gulp browser-...
0
votes
0answers
114 views

Boot Hangs Ubuntu Server 14.04

When I boot my server machine, it hangs unless I hit F12 at the POST screen and select the hard drive. There the grub menu shows up and I just select the first option, booting Ubuntu Server without an ...
0
votes
0answers
132 views

What data is being sent to Canonical with gvfsd-http and ubuntu-geoip-pr?

What data is being send to Canonical with gvfsd-http and ubuntu-geoip-pr? How do I read content of traffic sent to and from these specific processes? Output of $ lsof -i shows that my Ubuntu is ...
0
votes
0answers
42 views

killing process on port does not work

i am trying to kill a process that is using port 8180 to find the process i did: sudo netstat -lpn |grep :8180 Then i got the following result: tcp 0 0 0.0.0.0:8180 0.0.0.0:...
0
votes
0answers
37 views

what is status “ fsnotify_mark_destroy ” in wait channel?

Recently Iam seeing lot of "fsnotify_mark_destroy" as the wchan state for process .May I know more details on this status