On 11/21/06, Matthew Dillon <[EMAIL PROTECTED]> wrote:
This is slated for commit on Friday. This patch removes the global VM page hash table and also removes the VM object memq for VM pages and replaces them with a single red-black tree based in the VM object. It needs some testing.fetch http://apollo.backplane.com/DFlyMisc/vmpage01.patch The work also takes advantage of the RB tree topology to remove a number of hacks that previously existed to optimize page ranges. The new scheme is a much better fit to the types of ranged operations we already perform and intend to perform in the future. Lookups are somewhat less optimal and may inspire an optimization later on, but the nerf isn't really noticeable. One interesting outcome is that not having to allocate a global VM page hash table also saves us about 1 megabyte of memory per gigabyte of ram. Ok, it isn't that much, but it's always nice to occassionally be able to shrink the kernel's memory footprint :-)
Runs fine here, I have kept copying large files from/to the testing machine, everything seems ok in last 12hours. Cheers, sephe -- Live Free or Die
