On Thursday 05 April 2007 23:45, Magiclouds Magicloud wrote: > Using this clue, I have got some information, thanks. > But, as description of "maxcpus", I think I can not specify the cpus I > want to use, right? > > 2007/4/6, Rajko M. <[EMAIL PROTECTED]>: > > On Thursday 05 April 2007 22:31, Magiclouds Magicloud wrote: > > > Dear all, > > > Could I make one or more processes run only on certain CPU(s)? And > > > thread? Could I make some of the memory disappear from most of the > > > kernel and user space? So I can evaluate performance on a smaller > > > memory without removing them physically. > > > > > > Thanks. > > > > First question is probably about multiprocessor systems. > > I know that it is possible to use > > maxcpus=0 > > to make system use only one CPU, > > maxcpus=1 > > will use 2 of them, etc. > > mem=128M > > will use only 128 MB from whatever is installed. > > > > BTW, a little of Google may help you faster. ... > Using this clue, I have got some information, thanks. > But, as description of "maxcpus", I think I can not specify the cpus I > want to use, right?
The maxcpus tells kernel how many CPUs you want to use, nothing more. I guess that each CPU has it's device ID, so basically it is possible to isolate the one that you want to use, but I'm not aware of parameters that can be passed to kernel to select particular one. BTW, please note how I edited your answer. bottom posting helps all the people to read your posts and want to answer. Here is explanation why http://en.opensuse.org/Opensuse_mailing_list_netiquette#Bottom%20post -- Regards, Rajko. http://en.opensuse.org/Portal -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
