Neal H Walfield <[EMAIL PROTECTED]> writes: > > I think we should certainly use vm_copy for whole-page copies in > > pager_memcpy because of the badly suboptimal behavior you've described. > > I have cooked up the attached implementation. I checked everything > but a few border cases -- I need to write a few more tests. Perhaps, > I will get to it this weekend. However, I am interested in some > feedback.
One thing I think of looking at. It may well be that for smaller number of pages, memcpy is actually more efficient than vm_copy because of the constant overhead in the latter function. So I'd like to see some instrumentation of where that cutoff actually is. Until that's done, I have no problem with assuming any particular sane value for the cutoff, but I think your function should have a tunable parameter for it. Thomas _______________________________________________ Bug-hurd mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/bug-hurd
