Speaker
Francis Dequenne
(LBL)
Description
Abstract: For most sites, the HPSS disk cache is a critical component of the HPSS configuration, helping boosting performances of storing and retrieving data from the archive. However, it may be a bit of a black art to assess how big the disk cache should be, especially in environments that have grown over the tears. This talk will present a couple of tools that have been developed at NERSC, that allow us to assess the effectiveness of an existing cache, and give some insight on the impact of increasing or decreasing that disk cache size.
