11:00 Praveen Paritosh, Windows Performance Counters: Which ones matter (and When)?
About a thousand odd parameters (for example, Memory\Available
Bytes, Disk\Transfers/sec, Processor\Privileged_Time, etc.) are
available on a Windows NT/2000 Workstation at a frequency of 1Hz
via Perfmon. One day worth of all counters logs can be about
2GB. Such a wealth of information, but unmanageably large to
store, maintain or analyze.
The behavior of these parameters tells us about the state of the
workstation, and its dynamics. Previous work on estimating host
loads makes a priori assumptions about what parameters are
representative of the state of a workstation. Here I dismiss that
assumption, and look at the statistical properties of the data to
I will present linear and nonlinear methods of dimensionality
reduction, maybe talk a little about clustering, and how these
applied to Windows logs; and results - the important dimensions,
and their dynamics.