On 08/20/2010 03:36 PM, Aaron Konstam wrote: > On Thu, 2010-08-19 at 16:15 -0500, Michael Hennebry wrote: >> On Thu, 19 Aug 2010, JD wrote: >> >>> Problem comes as Michael explains, that when a process needs a large >>> "physically contiguous" chunk of memory, it might not be available. >>> That said, usually, requests for physically contiguous memory is only >>> needed when wanting to map very large number of DMA pages for >>> doing direct physical I/O. >>> Otherwise, a process itself does not need to have physically contiguous >>> pages. Only the virtual space allocated to that "malloc" or large buffer >>> declaration in a program, is contiguous. >> >> Why would malloc or a large buffer declaration >> require physically contiguous memory? > I have te equally interesting question? Why you think malloc allocates > memory blocks in the swap area. JD didn't say that. He said that when a process needs a large physically contiguous chunk of memory, you may need to use swap space to move other processes out of the way. Andrew. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
