» Important notice for customers using HP DCPI with OpenVMS v8.2—please read this notice before installing or running HP DCPI
The HP Digital Continuous Profiling Infrastructure (HP DCPI) Advanced Development Kit for AlphaServer systems permits continuous low-overhead profiling of entire
systems, including the kernel, user programs, drivers, and shared
libraries. The system is efficient enough that it can be left
running all the time, allowing it to be used to drive online
profile-based optimizations for production systems.
HP DCPI maintains a database of
profile information that is incrementally updated for every
executable image that runs. A suite of profile analysis tools
analyzes the profile information at various levels. At one extreme,
the tools show what fraction of CPU cycles were spent executing the
kernel and each user program. At the other extreme, the tools show
how long a particular instruction stalls on average, for example, because
of a D-cache miss.
HP DCPI documentation contains an
overview of DCPI for OpenVMS, along with detailed descriptions of DCPI commands.
To download and install DCPI, you must first agree to the terms
of the license
and register with HP. You will then receive
an e-mail message with the location of the download kit.
To be notified of new releases and other
developments, sign up for our HP DCPI mailing list by sending us your full name, affiliation, mailing
address, and preferred e-mail address.