is this useful?:

$ cat sysconf.c
#include <stdio.h>
#include <unistd.h>

int
main()
{
        printf("nproc configured %ld\n", sysconf(_SC_NPROCESSORS_CONF));
        printf("nproc online %ld\n", sysconf(_SC_NPROCESSORS_ONLN));
        return 0;
}
$ cc -o sysconf sysconf.c
$ ./sysconf
nproc configured 4
nproc online 2

On Sun, Sep 19, 2021 at 1:18 PM Chris Bennett <
cpb_m...@bennettconstruction.us> wrote:

> On Sun, Sep 19, 2021 at 01:37:05PM -0400, Daniel Wilkins wrote:
> > Hyperthreads are easy: they've been disabled for years (unless they got
> flipped on and I didn't notice.)
> >
>
> Does the setting in the BIOS need to be turned off also?
> Or is it irrelevant? I had a server for a while where the company
> insisted that it be left on in the BIOS.
>
> Thanks,
> Chris
>
>

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