On 13/02/23 18:22, Thomas Gleixner wrote:
On Mon, Feb 13 2023 at 10:10, Sourabh Jain wrote:
The sysconf document says _SC_NPROCESSORS_CONF is processors configured,
isn't that equivalent to possible CPUs?
glibc tries to evaluate that in the following order:
1) /sys/devices/system/cpu/cpu*
That's present CPUs not possible CPUs
2) /proc/stat
That's online CPUs
3) sched_getaffinity()
That's online CPUs at best. In the worst case it's an affinity mask
which is set on a process group
Thanks for the clarification Thomas.
- Sourabh
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