USENIX 2005 Annual Technical Conference, General Track Abstract
Pp. 371374 of the Proceedings
AMP: Program Context Specific Buffer Caching
Feng Zhou, Rob von Behren, and Eric Brewer, University of California, Berkeley
We present Adaptive Multi-Policy disk caching (AMP), which
uses multiple caching policies within one application, and adapts
both which policies to use and their relative fraction of the cache,
based on program-context specific information. AMP differentiate
disk requests based on the program contexts, or code locations, that
issue them. Compared to recent work, AMP is unique in that it
employs a new robust scheme for detecting looping patterns in access
streams, as well as a low-overhead randomized way of managing many
cache partitions. We show that AMP outperforms non-detection-based
caching algorithms on a variety of workloads by up to 50% in miss
rate reduction. Compared to other detection-based schemes, we show
that AMP detects access patterns more accurately for a series of
synthesized workloads, and incurs up to 15% fewer misses for one
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