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authorLinus Torvalds <torvalds@linux-foundation.org>2008-02-04 10:58:52 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-04 10:58:52 -0500
commitf5bb3a5e9dcdb8435471562b6cada89525cf4df1 (patch)
tree7b7cf9b90bacd0e2fe07cb3387516e9243f1ab66 /Documentation/smp.txt
parent9853832c49dc1685587abeb4e1decd4be690d256 (diff)
parent1560a79a2c2ea0c3826150da8029991d685de990 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (79 commits) Jesper Juhl is the new trivial patches maintainer Documentation: mention email-clients.txt in SubmittingPatches fs/binfmt_elf.c: spello fix do_invalidatepage() comment typo fix Documentation/filesystems/porting fixes typo fixes in net/core/net_namespace.c typo fix in net/rfkill/rfkill.c typo fixes in net/sctp/sm_statefuns.c lib/: Spelling fixes kernel/: Spelling fixes include/scsi/: Spelling fixes include/linux/: Spelling fixes include/asm-m68knommu/: Spelling fixes include/asm-frv/: Spelling fixes fs/: Spelling fixes drivers/watchdog/: Spelling fixes drivers/video/: Spelling fixes drivers/ssb/: Spelling fixes drivers/serial/: Spelling fixes drivers/scsi/: Spelling fixes ...
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1To 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'
19
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.