On 22/11/06, SK malik <srikrishanmalik@xxxxxxxxx> wrote:
HI,
Does any body have any idea about the maximum number of CPUs that Linux
can support.
I could find some experiments being done on 8 way machines. Can it support
more than that,
what about a 48 way??
$ grep -A 1 NR_CPUS $(find ./ -name Kconfig)
./arch/alpha/Kconfig:config NR_CPUS
./arch/alpha/Kconfig- int "Maximum number of CPUs (2-64)"
--
./arch/arm/Kconfig:config NR_CPUS
./arch/arm/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/i386/Kconfig:config NR_CPUS
./arch/i386/Kconfig- int "Maximum number of CPUs (2-255)"
--
./arch/ia64/Kconfig:config NR_CPUS
./arch/ia64/Kconfig- int "Maximum number of CPUs (2-1024)"
--
./arch/m32r/Kconfig:config NR_CPUS
./arch/m32r/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/mips/Kconfig:config NR_CPUS
./arch/mips/Kconfig- int "Maximum number of CPUs (2-64)"
--
./arch/parisc/Kconfig:config NR_CPUS
./arch/parisc/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/powerpc/Kconfig:config NR_CPUS
./arch/powerpc/Kconfig- int "Maximum number of CPUs (2-128)"
--
./arch/ppc/Kconfig:config NR_CPUS
./arch/ppc/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/s390/Kconfig:config NR_CPUS
./arch/s390/Kconfig- int "Maximum number of CPUs (2-64)"
--
./arch/sh/Kconfig:config NR_CPUS
./arch/sh/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/sparc/Kconfig:config NR_CPUS
./arch/sparc/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/sparc64/Kconfig:config NR_CPUS
./arch/sparc64/Kconfig- int "Maximum number of CPUs (2-64)"
--
./arch/um/Kconfig:config NR_CPUS
./arch/um/Kconfig- int "Maximum number of CPUs (2-32)"
--
./arch/x86_64/Kconfig:config NR_CPUS
./arch/x86_64/Kconfig- int "Maximum number of CPUs (2-256)"
--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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