broken maxcpus in 2.4.24

From: Dan Christian
Date: Mon Feb 02 2004 - 18:39:39 EST


I compiled a vanilla 2.4.24 for a 2 processor Xeon.

I set CONFIG_NR_CPUS to 4 (2 CPUs x 2 hyperthreads each).

When I boot the kernel, /proc/cpuinfo only shows 2 cpus (0-1) and
performance is bad.

I reconfigure CONFIG_NR_CPUS back to 32. Now it shows 4 cpus (0-3) and
performance is normal.

Is this a bug or am misunderstanding how to set this configuration
variable?

-Dan Christian


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