On 28.08.2013 16:57, Kyle McMartin wrote: > On Wed, Aug 28, 2013 at 12:46:31AM +0200, poma wrote: >> Any links/docs to offer on this topic? >> Thanks. >> > > I don't have a link off-hand, but a book about computer architecture > should let you figure things out: > > At what level of detail? The kernel attempts to map itself using > 2MB pages on X86 where possible (since it's large and contiguous.) > > For various reasons, modules are mapped using 4K pages since they'd need > to be padded out to 2MB (very little module .text would be that big, and > obviously code and data are mapped separately for protection reasons.) > Also, separate modules need to be on separate pages in order to ensure > that you can remove them independently. > > So the more modules you have loaded, the more likely useful TLB > (translation lookaside buffer, which caches virtual to physical > mappings) from userspace will get pushed out by the kernel on a system > call or interrupt. > > regards, Kyle > This is a good starting point. Thank you. poma -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
