Distribution of workers between processes and threads

[Nick Gearls <nickgearls@xxxxxxxxx>]

Hi everybody.
I have a question about the distribution of workers between processes 
and threads.

Let's say that I have a 12 core machine and that I want to server up to 
300 parallel requests.
I have the choice between, for instance, 10 processes with 30 threads or 
30 processes with 10 threads.
Am I right with the following logic:
I keep 2 cores for the OS (machine dedicated to httpd), so I have 10 
cores for httpd.
Optimal use is one process per core, so 10 processes.
I need to use all CPUs, and multiple processes per CPU will consume more 
resource, correct?

Thanks


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