Messages in this thread | | | Date | Mon, 22 Mar 1999 17:43:59 -0500 (EST) | From | Chuck Lever <> | Subject | Re: CPU Management for Linux? |
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On Mon, 22 Mar 1999, Alex Buell wrote: > On Mon, 22 Mar 1999, Ingo Molnar wrote: > > On Mon, 22 Mar 1999, Alan Cox wrote: > > > > > > the above applies here -- if we tie a process to a specific processor > > > > or set of processors (there are patches which implement an IRIX > > > > compatible API here), how do we remove the processor? > > > > > > You kill it, suspend it until the new CPU is added, or transfer it to > > > another CPU > > > > or we can just return '-EBUSY' for the CPU-removal system call, the logic > > is similar to umounting a filesystem. > > % mount -t cpu /dev/cpu0 > % umount -t cpu /dev/cpu1 > > Cool idea.
i would think there would be need to unconditionally and safely vary a CPU offline, for example during a machine check. how hard could it be to transparently transfer running processes to other CPUs?
- Chuck Lever -- corporate: <chuckl@netscape.com> personal: <chucklever@netscape.net> or <cel@monkey.org>
The Linux Scalability project: http://www.citi.umich.edu/projects/citi-netscape/
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