Ruben Kerkhof wrote:
It's even higher these days:
grep NR_CPUS /boot/config-2.6.32-220.13.1.el6.x86_64
I'm curious, has anyone measured what the memory overhead is of
keeping NR_CPUS at 512?
arch/x86/Kconfig says "This is purely to save memory - each supported
CPU adds approximately eight kilobytes to the kernel image." If that's
true, 512 cpus use 4MB, something I'm willing to live with on my 64bit