CVS commit: src/sys/rump/librump/rumpkern

[Antti Kantee <pooka%netbsd.org@localhost>]

Module Name:    src
Committed By:   pooka
Date:           Tue Sep  7 07:47:36 UTC 2010

Modified Files:
        src/sys/rump/librump/rumpkern: vm.c

Log Message:
Improve page allocator performance by using pool_cache for the
structure itself and allocating the backing page directly from the
hypervisor.

* initial write to a large tmpfs file is almost 2x faster
* truncating the file to 0 length after write is over 50% faster
* rewrite of the file is just slightly faster (indicating that
  kmem does a good job with caching, as expected)


To generate a diff of this commit:
cvs rdiff -u -r1.89 -r1.90 src/sys/rump/librump/rumpkern/vm.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.