LinuxQuestions.org - [SOLVED] About CPUs, threads and ffmpeg

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About CPUs, threads and ffmpeg

Hello,

Ffmpeg has an option called threads which speeds up encoding. I have an AMD Phenom Triple-Core Processor and I ran this command to check for threads so I can use that info for the threads option of ffmpeg.

Here is the output of lscpu

Quote:

Architecture: i686
CPU op-mode(s): 64-bit
CPU(s): 3
Thread(s) per core: 1
Core(s) per socket: 3
CPU socket(s): 1
Vendor ID: AuthenticAMD
CPU family: 16
Model: 2
Stepping: 3
CPU MHz: 2100.000
Virtualization: AMD-V
L1d cache: 64K
L1i cache: 64K
L2 cache: 512K
L3 cache: 2048K

Does this mean that my machine sees 6 cores from the info above?

i.e Three cores plus one thread per core = six cores

Let me know if my assumption is correct. Thanks

Quote:

Originally Posted by H5X00R (Post 4926042)

Does this mean that my machine sees 6 cores from the info above?

i.e Three cores plus one thread per core = six cores

Very strange "logic".
You have 3 cores, each of which can run 1 thread - i.e. not hiper-threaded.

Hello,

I found this link which explains CPUs and threads counts in linux
http://dbastreet.com/blog/?p=469

So, I was wrong about having six cores. My system sees four cores max. i.e 3 cores plus one thread and hyperthreading is unavailable in my bios.