Thread is a form of a process to divide itself into two or more tasks that can be executed concurrently.

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How do I kill a specific thread in Windows?

The process explorer.exe has a thread with "start address" starting with "windows.immersiveshell.serviceprovider.dll". It takes a lot of processing power. Additionally, after waking up from sleep it ...
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1answer
550 views

Installing ffmpeg (namely fdk-aac) on cPanel server causes issues with perl threads

Basically, I'm trying to install FFMPEG on a cPanel server. I'm able to get everything installed and working (tested using ffmpeg -v) except for libfdk-aac. I can do the git clone and everything ...
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1answer
56 views

Get username of a thread

How to gather the username/SID/account of a particular thread? No, I am not looking for account of the process, but of specific thread. I've looked-up Process Explorer, but it doesn't show security-...
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1answer
676 views

how to make Apache 2.4 work in single worker mode by default?

I'm using Apache 2.4 on my server. My scripts are using a lot of system() commands and they require to work in one process mode. When I start apache using the command: apachetctl -X (which ...
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1answer
67 views

Kernel threads and process virtual address

If the kernel is spawned as threads and resides in the memory then how could the ps command identify them if those are not normal process and i give you more look here: root 2 0 0 févr....
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1answer
78 views

Kernel Thread that won't exit, Load Average +1

So I have a new server that is up and running with Centos 6, and the load average is stuck hovering around 1, even when the machine is nearly idle. I reviewed the process table and found this running:...
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1answer
241 views

Use all processor cores, 1 core/per 1 thread in *nix

According to xz documentation the "-T 4" means I should be using 4 threads, each compressing a different part of the file simultaneously. Before using nice -19 I would only get %50 usage of 1 core, ...
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1answer
66 views

i3 3210 do all 4 threads run at once

windows 7, task manager show%s thread 1,2,3 all running around 40% thread 4 is at 2%. Is this normal? i3 3210 windows 7 8GB DRAM cpu running at 35% per task manager
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894 views

Jenkins realtime console output for parallel threaded fabric command

We have a Python fabric command that runs in parallel across several hosts, something like this: $ fab --hosts=prod1.server,prod2.server,prod3.server --parallel copy_cache This will copy cache to ...
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0answers
23 views

Show all running tasks in Assembly

Is it possible to show/log everything what the CPU does? The CPU knows what it executes, so it could print the running threads/tasks on the screen or in a file.
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150 views

How does Windows affinity work with hyperthreaded CPUs?

Let me describe our requirement in detail. We are doing some kind of assignment which requires capturing of IP data through NIC card and then processing the captured data in real time. The processing ...
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0answers
751 views

ProRes transcoding in ffmpeg too slow

We are trying to transcode movies / clips into ProRes LT by using following options: ffmpeg -threads "16" -i "$2" -flags +ildct -vcodec prores -profile 1 -qscale 4 \ -threads "16" -r 24 -vf "yadif=0:-...
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0answers
203 views

Is it possible to find what's “choking” Firefox?

Is it possible to find what exactly is causing Firefox to randomly CPU-spike at 13%, freezing it entirely? And by "exactly", I mean finding what functions/calls/modules/threads/drivers are the direct ...
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0answers
40 views

Resource Monitor - hard faults - threads

click to enlarge Task Manager => Performance => Resource Monitor. I have 16GB ram, and when I took that screenshot I had 8GB left. In fact, I tried setting Paging file to None (disabled) and that ...
0
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0answers
31 views

Faster 32 bit execution with Hyperthreading disabled?

I am using numpy-Python scripts that take a lot of computing power to execute. The scripts themselves are already quite well written an I can say that I cannot really improve their speed by writing ...
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0answers
26 views

Single service using thousands of threads

I have an windows application that is having performance and stability issues that our company has bought from a vendor. I noticed the application was using 1,000 - 4,000 threads. Could this be ...
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0answers
50 views

No C++ pthread support in build farm?

I'm trying to get some code compiling in a build farm. When I build it on my development machine things go fine: checking if C compiler and POSIX threads work as is... no checking if C++ compiler and ...
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269 views

setting affinity for multiple cores on dual cpu system

We are using some systems with 2cpu's with 6 cores/12 threads each so 24 threads in total, for quite a lot of multitread simulations. Because the problem doesnt scale perfectly, i usualy run 4 ...
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26 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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0answers
28 views

Is parallelism in computer science always directly tied to the number of processor cores?

Specific to the Java programming language, would it be accurate to say that two threads can be concurrent, but can only truly be run in parallel if there are two or more cores?
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2k views

CPU usage always around 40% because of wait-chain?

I am facing a very rare problem and it's causing much trouble. Whenever I boot my PC(HP 2000-2116tu, Win7, 4GB mem), there is a set of processes(legitimate ones and not virus), one of which starts to ...