Performance runs on 64-bit systems

[Bryce Harrington]

Here is another set of animations, this time against x86_64 hardware.
These show performance with local mount, nfsv3, nfsv4, and samba.

http://crucible.osdl.org/reports/perf-x86_64-local.gif
http://crucible.osdl.org/reports/perf-x86_64-nfsv3.gif
http://crucible.osdl.org/reports/perf-x86_64-sys.gif
http://crucible.osdl.org/reports/perf-x86_64-smb.gif

(Note that these include runs from all of the nfsv4 git trees.)

The initial dip at the beginning of the animations is the
2.6.19->2.6.20 jump I reported previously.  Other than that, there
doesn't seem to be any noteworthy defects.

Bryce