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

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462 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 ...
1
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1answer
48 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 ...
0
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1answer
39 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 ...
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1answer
84 views

Can threads from the same process run at the same time, on a multicore systems?

I searched the web and the answers I found were tentative. That is, people thought this is what happens but were not sure. Assuming the proper precautions were taken to synchronize and prevent ...
0
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1answer
396 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 ...
0
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1answer
175 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
65 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
7
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0answers
403 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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20 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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0answers
108 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
516 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 ...
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0answers
160 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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23 views

what is a handle in windows?

What is a handle? (please look at the following image) A handle is a generic OS term that can be a ticket to an operating system object. Each handle is unique and identifies each object. ...
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0answers
9 views

Enable fine grained, thread level timings for benchmarking?

I need to perform some benchmarking on Linux, and I'd like to use Fedora or Ubuntu. Linux kernels don't provide fine-grained, thread level timing information. About all I can get is process times. ...
0
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0answers
118 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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0answers
24 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
26 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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1k 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 ...