Ruben Kerkhof wrote:
It's even higher these days: grep NR_CPUS /boot/config-2.6.32-220.13.1.el6.x86_64 CONFIG_NR_CPUS=4096 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 servers.
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