Re: performance differences: "maxcpus=1" vs. "echo 0 > /sys/devices/system/cpu/cpu1/online"

On Tue, Mar 25, 2008 at 02:47:50PM +0100, Michael Meyer wrote:

what is the difference between booting a dual core
machine with "maxcpus=1" or by deactivating the second
core at run time with "echo 0 >

maxcpus=1 should turn off the SMP alternative and switch to UP only,
optimising some locks and instructions.

Luciano Rocha <luciano@xxxxxxxxxxx>
Eurotux Informática, S.A. <>

Attachment: pgpNXUvTS1bDd.pgp
Description: PGP signature