A process is a binary program running continuously on a computer (until terminated) which is managed by the operating system.

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How can a process in “interruptible sleep” state use 100% CPU?

According to this reference, a process has the following states R running or runnable (on run queue) D uninterruptible sleep (usually IO) S interruptible sleep (waiting for an event to complete) Z ...
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337 views

How to kill screen session with running sudo command?

I'm trying to write a bash script which would relaunch my NodeJS server. This is how I'm launching the screen with the server: screen -S web-server -d -m node web-server.js which end up in this ...
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1answer
321 views

What is the “Ideal Processor” value?

What is the "Ideal Processor" value and why/how does it pick a certain processor to run on? I've recently seen an obvious increase in CPU usage on the furthest last core, core #7 (i7 930 ...
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219 views

Child processes remain after quitting screen

I'm seeing some strange screen behavior on OSX. When I quit screen, child processes are not killed. $ screen $ tail -f (or some long running process inside screen) Then, I kill the current screen ...
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1k views

Ubuntu detect memory leak

I run watch free and then observe a continuous memory used increment, about 100 every 2s. How can I know which process contribute to the used memory increment? top and pmap does not help. BTW, after ...
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1answer
54 views

Is there any way to find how RAM my VPS uses on average?

I have a VPS system with 768MB RAM. Is there any way to find out what the average amount of RAM I normally use is which processes normally use high RAM and CPU so that I can see if i need to ...
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18 views

How to find the real process that is generating traffic when using OpenVPN

A pretty easy thing to do so it seems but i'm struggling with it. I got some (Windows XP) clients connected via OpenVPN using bridged mode. Now suddenly I started to see higher traffic load from those ...
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13 views

How to disallow a specific process from reading a specific file?

Is it possible to block a specific program/process from reading a specific file, supposing I know their exact paths? I know that it is possible to block internet acecss from a specific program, but ...
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63 views

How can I determine which process is causing failed ARP requests?

I am seeing many failed ARP requests from a Windows 7 Pro machine to IP addresses not on my subnet (one is a valid IP but no longer in use, the other is an APIPA address). I suspect a program or ...
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20 views

How can I get a list of processes that were run and exited on Windows?

On occasion, a command-line window appears then instantly vanishes. I'm sure it is some scheduled task, or something that the company IT department runs periodically. How can I determine what this ...
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38 views

Screen: user session closed, why?

For a couple of years now have been relying on a bash script that invokes a java server process via screen; until last night it has run flawlessly, just ssh into remote server >> sudo screen >> invoke ...
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49 views

What is _Total in WMI output for list of processes?

I am trying to generate a list of processes running on a remote Windows 2008 server along with their CPU/Memory utilization through a .vbs script. Here is the WMI query that I have used: Select ...
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264 views

How to change process name and description of a program

How do i change process name of a program. Am running notepad.exe. I want to change the name of program notepad in Task Manager but i want to keep its original name when am selecting the notepad.exe ...
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45 views

uTorrent refusing to start/end on Win7

Ok, so I had to clean up this computer, and I noticed 2 uTorrent entires in the control panel - uTorrent 3.3.0 and uTorrent 4.x.y (I don't remember the exact numbers). I decided to remove uTorrent ...
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45 views

Process ID files missing from remote Ubuntu Linux PC?

I am running Ubuntu 12.0.4 LTS on a PC in my office and on a virtual machine hosted on Azure. For some reason, the remote PC is not creating a PID file for each process. Everything else seems to ...
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81 views

RUNDLL message re btwizard,dll

I've started to get this message: "RUNDLL Error loading btwizard.dll The specified module could not be found." I haven't yet pinned down what activity actually triggers the message. But I do ...
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18 views

finding out when some file is released by the process, Windows

I was reading about of know what process (or PID) in Windows is using some file with Handle or Process Explorer. My doubt is when?, not who? I want to know when the file is released, and I can ...
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270 views

Svchost.exe taking up memory and slowing down laptop

I have an svchost process running on my 32bit Windows 7 Professional that keeps hogging physical memory for no reason that I can figure out. If I terminate it, it runs again and then it works as it ...
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24 views

Do threads/processes that create/delete files/directories under a shared parent dir interfere?

I was wondering: If I have a directory /a/b/c/ and under c X threads create subdirectories and files and delete them (they are temporary directories and files as intermediate steps of processing) do ...
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25 views

Why creating a process is a two-step process (fork-exec)?

I'm studying Tanenbaum's "Modern Operating Systems" book and he's explaining that: The reason for this two-step process is to allow the child to manipulate its file descriptors after the fork but ...
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51 views

Troubleshoot Persistent Crashing of Task Blocker on Windows 7

There's a free app called Task Blocker which I've found very useful for over a year. A few days ago it quit working. Every time I launch it Windwows immediately informs me that it has quit working and ...
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65 views

How to measure CPU cores usage for a single process?

Is there a way to see which and how many cores are used by single process on Windows server 2008 R2? I have tried Windows task manager and Process explorer but without any success.
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Windows 8 OpenProcess without admin privileges

I'm using Windows 8, I'm running an app without admin rights. It's able to get handles to all processes which are running without admin rights using OpenProcess(PROCESS_ALL_ACCESS, TRUE, processID) ...
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89 views

Command to output its backend process

I have an application running in windows that has an option to run a command (UI base). I'm pretty sure that the UI base backend is running in a cmd but I dont know what is the exact bin file. The ...
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187 views

Process Hacker “System services”

Hoping that this isn't already asked somewhere and hoping it's not too vague. First time using anything on stackexchange. I'm a really curious person so I don't exactly need an answer to this ...
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137 views

How Windows/Linux assign PID to processes?

Q1 : I want to know how Windows/Linux assign a PID to a process when that process began? Is it a delimited random number? or it is fixed for a file on a compute? does it have a special algorithm? and ...
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34 views

Linux - view processes as they are being run?

I know I can use top or htop to view running processes in (near) real time, and I can use ps to print a list of all currently running processes, however what if I want to view certain processes and ...
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How can I monitor every newly created process of an entire Linux system?

I am on a gentoo Linux system and I want to monitor the time and name of every created and deleted process on an entire Linux system. How can I do that? If possible, I do not want to install new ...
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23 views

Are there two seperated schedulers in major operating systems, one for processes and one for their threads?

Let's assume a process is given the CPU on a single-core CPU system by the scheduler and let's assume this process has 10 threads. Who decides which of the ten threads gets the CPU? In other words, ...
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47 views

Dropbox Desktop keeps uploading after closing

I am using the Dropbox Desktop tool and upload (for my bandwidth) large amounts of data regularly. When I want to e.g. play online I just pause the upload. Since a few days when I pause it, it keeps ...
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76 views

Lingering firefox.exe

It seems like every other time I try to launch Firefox, I get an error message saying Firefox is already running. While I see no Firefox windows displayed, investigating the Processes tab in Task ...
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linux - kill -9 doesn't work on running process

I have apt-get process running on my server and I cannot kill it. root 26386 99.7 0.0 25588 2844 ? RN 06:52 956:49 apt-get -qq -y update I used kill 26386 first, then tried kill -9 ...
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550 views

One particular instance of svchost.exe taking up awful lot of memory. Why?

I have been observing that the process "svchost.exe" in my list of running processes keeps taking an awful lot of memory; close to 550MB at times! There are multiple instances of svchost.exe running ...
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63 views

How can I confirm if a process is being blocked from communicating on a network?

I have a user system with a third-party vendor product that needs to communicate with the network. We're noticing symptoms that suggests that the program/process is being blocked from communicating ...
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37 views

Nicing processes and unresponsive computers

I've a of process running on a machine. The machines are 6-core hyperthreaded for an effective total of 12 cores and the process takes 400% of the cpu so 4 cores. I niced the process to +19 for a ...
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244 views

What can cause a sudden increase in the number of processes at my VPS?

My VPS (Ubuntu 12.04.3 LTS ) dies few times a month. Only restarting whole VPS through hosting panel helps. I discovered that the cause of that is a sudden increase of the number of processes. I've ...
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57 views

Disable Windows 8 auto ending programs

I often lose my unsaved work because of Windows 8's stupid feature that ends unresponsive programs once the dialog box, "This program is not responding" appears. Are there any options I can disable ...
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115 views

Taking control of a program another user started in Windows 7

The company I work for is adding securities per user. We used to use generic log-ins so that multiple people could use a single machine with out restarting our programs. The program takes 2-4 minutes ...
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36 views

list all the information of a process under commandline in osx or linux

Is there any command to list all the information associated with a process, include all parameters in PS command, open files and ports and so on? Thanks!
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553 views

Recover Data from a crashed process (with .dmp file)

I made a .dmp file of my process that crashed. It contained very important data. How will I recover that data. The process had it sat in ram, then hung half-way through saving. I made a 'Dump File' ...
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155 views

Reducing CPU load to absolute minimum

I have had a couple of things gone missing I believe stolen in my shared apartment and want to run my laptop constantly with a webcam attached, running webcam surveillance software to record/ take ...
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119 views

Limited task manager?

I know it seems counter-productive, but I was looking for a task manager that it's more limited than the one that comes with Window. The reason is that some servers that I use (but not manage) have ...
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47 views

How to keep a completed process in memory?

I have a program that has a large startup delay. (it needs to load lots of data from hard drive). So, I call it from the command line and provide it the name of input file, it processes that and ...
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113 views

How do I force a process to stay on even after logging out or move process out of user-space memory?

I am quite often uploading various big files to various websites with my web browser on a slow connection and not every website support resuming of the upload. Now my lsass.exe process consumes ...
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77 views

activity monitor - alert over an email when no activity detected (file changed or via http request)

Is there any reliable and configurable utility for linux severs that sends email notifications when no specified/configured/scripted activity is detected for a given period of time? I'm not looking ...
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188 views

Which processes were running yesterday?

We have a production machine that keeps crashing on regular basis. Our staging environments run fine, but when the application is deployed to production, the production machine crashes after two or ...
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85 views

Issue with awtessd - how to permanently close a process on osx Lion?

I have a problem with this process called awtessd, when i use a program (autodesk alias) several instance of this process are opened, slowing down everything. If i close the process everything turn ...
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110 views

Start, stop and restart processes without resorting to batch files

I need a GUI to start, stop, and restart processes (actually console applications). Currently I start those console apps using BAT files. It's not convenient. Here is an example of BAT file which ...
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NSCD keeps randomly restarting without paranoia enabled

I've got a few Hypervisors on which the nscd process keeps randomly restarting. I don't know it's going on until monit emails me saying the process has a new pid. Unfortunately, the person that did ...
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How are memory read, write, execute permissions enforced in the Linux kernel?

How is a system able to restrict processes from being able to write to regions of memory set read-only? In particular, how is the Linux kernel able to enforce these permissions, assuming that the ...