Host Metrics to Relate Application Performance to Storage Performance

The storage service time distribution at the host is introduced as a new metric for storage performance. Uses include problem determination and application performance diagnostics. This metric has considerable advantage over tradition storage system benchmarks, especially in shared storage environments. The utility and limitations of the IOWait operating statistic are also explored. A methodology to quantify the relation between application and storage system performance based on symmetric treatment of system resources is proposed.

By: Norman Bobroff; Kirk A. Beaty; Andrzej Kochut

Published in: RC23812 in 2005


This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.


Questions about this service can be mailed to .