DTrace gets guernsey in new FreeBSD
zdnet.com.au
zdnet.com.au
Note that DTrace on FreeBSD can only be used for kernel-space probing, for the time being. Userland probing is expected in a future release.
The BSD's don't have the fan boys that linux has but FreeBSD really is an excellent and highly organized unix variant.
Mildly funny story: my grandma once said at a family gathering, telling a story of somebody in the hospital, "then they wheeled him off on a guernsey", which everyone thought was pretty hilarious.