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Linus Torvalds1da177e2005-04-16 15:20:36 -07001To set up SMP
2
3Configure the kernel and answer Y to CONFIG_SMP.
4
5If you are using LILO, it is handy to have both SMP and non-SMP
6kernel images on hand. Edit /etc/lilo.conf to create an entry
7for another kernel image called "linux-smp" or something.
8
9The next time you compile the kernel, when running a SMP kernel,
10edit linux/Makefile and change "MAKE=make" to "MAKE=make -jN"
11(where N = number of CPU + 1, or if you have tons of memory/swap
12 you can just use "-j" without a number). Feel free to experiment
13with this one.
14
15Of course you should time how long each build takes :-)
16Example:
17 make config
18 time -v sh -c 'make clean install modules modules_install'
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20If you are using some Compaq MP compliant machines you will need to set
21the operating system in the BIOS settings to "Unixware" - don't ask me
22why Compaqs don't work otherwise.