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

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