Previously the majority of the VM was under a single token, the vm_token; now vm_objects (mappable entities) are each under a private token, concurrent page faults in the same object can proceed, and VM SMP scalability overall improved. Results for Postgres and MySQL, among others, are excellent.
Francois Tigeot [worked on benchmarks](http://leaf.dragonflybsd.org/mailarchive/kernel/2011-11/msg00004.html) comparing DragonFly 2.10 and DragonFly 2.13, among other operating systems. The [resulting graphs](http://dl.wolfpond.org/Pg-benchmarks.dfly_only.pdf) show how well DragonFly responds to multiple CPUs. (2.13 is the development version of DragonFly that became 3.0.)
-See:
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### HAMMER performance greatly increased
Four release options are now available for 32-bit as well as for 64-bit. 64-bit installations are recommended if you do not need the linux emulation layer.
-* An ISO, to be burned to a physical cd or used as an image to install a virtual machine.
+* An ISO, to be burned to a physical CD or used as an image to install a virtual machine.
* A bootable USB disk-key image. (minimum 2G USB stick needed)
* A GUI bootable USB ISO image with a full X environment. DVD disc required.
* A GUI bootable USB disk-key image with a full X environment. (minimum 4G USB stick needed)