FInding out how many CPU threads available on Ubuntu


I want to set the thread_concurrency setting in the my.cnf file on a Ubuntu server.

I'm not sure how many threads it is capable of - is there a command I can run? Not sure if HT technology on the cores enables more threads etc..

It has 2 cores but not quite sure of the processor exact model and tech. Was hoping the OS can tell me :)

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PapertripConnect With a Mentor Commented:
'cat /proc/cpuinfo' without the grep will show you the processor(s) model type.
DonConsolioConnect With a Mentor Commented:

 cat /proc/cpuinfo  | grep processor

klodefactorConnect With a Mentor Commented:
If it's an Intel CPU, has excellent information, including # of cores, # of threads, etc.  If cores is 2, and threads is 4, you know you have a dual-core processor with Hyperthreading enabled.  Capabilities such as hyperthreading are also listed at the bottom of each processor info page.  As an example, the Xeon E5430's page is

Intel's Hyperthreading enables one more thread per core.  This second thread is only available if the mix of instructions means that work is available for idle execution units.  For a modern OS that recognizes the difference between physical cores and logical (HT-based) cores, you can safely leave HT enabled for most workloads.  According to Intel, you can expect something in the range of 30% more performance, again for most workloads.

dolythgoeAuthor Commented:
Thanks all
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