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2
votes
1answer
21 views

Need help finding the CPU id numbers to use with cpu sets

The man for cpuset doesn't seem to clearly list how to figure out which numbers map to which processing units. My current machine has two Intel Xeon E5645s, each of which has 6 cores and ...
1
vote
1answer
91 views

What are the two sections of this dmidecode output?

I ran dmidecode on my system to verify certain processor information. However, I am not sure what the two sections of the output indicate. $ sudo dmidecode -t processor # dmidecode 2.11 SMBIOS 2.7 ...
3
votes
2answers
521 views

How does Debian make use of lots of CPU cores?

I just got an account on a 24 core VPS (according to UnixBench there are 24 CPUs). In general terms, how can I make good use of all these cores for general purpose shell computing in Debian? Do I ...
5
votes
2answers
6k views

So what are logical cpu cores (as opposed to physical cpu cores)?

I was googling about how I could find the number of CPUs in a machine and I found some posts but I am confused as some mentioned that you get the logical cores vs physical cores etc. So what is the ...
0
votes
2answers
177 views

what is meant by multiprocessing and how it works? [closed]

what is difference between cores, CPU, threads and processor on linux system ? please explain the difference
5
votes
1answer
201 views

Running one OS per core

I'm interested in using a COTS board like the Wandboard for a project. On one hand I'd like to use something like Ubuntu for user interaction, sounds, TCP/IP stuff, etc. But I also need an RTOS like ...
2
votes
0answers
438 views

Java uses max 8 cores on Debian, even though 16 are available [closed]

I have two servers at hand, both with 16 cores. The first is running Debian, the second running Ubuntu. I have written a small multithreaded java app that creates 16 threads. On the Debian machine, ...
5
votes
1answer
611 views

How to find out how many cores (including emulated via HT and such) are avaliable to user?

I wonder how to get how many cores (including emulated via HT and such) are avaliable to user via bash shell-script command?
4
votes
1answer
3k views

Should I disable hyperthreading when concerned about performance of single-threaded applications?

I use a i5-2410M processor, which is setup to do hyperthreading by default on my laptop. Considering that this is a 2-core processor, this means it can do 4 threads at a time. This also means that ...