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Video: Intelligent Cache Hinting in Lustre

In this video from LUG 2015 in Denver, Micah Bhakti from Intel presents: Intelligent Cache Hinting in Lustre.

Data caching can provide increased performance when using a mix of high and low performance storage, but traditional replacement algorithms like LRU may evict important data in multi-tenant environments, or in situations where the cache is “cold”. By tagging and prioritizing data within the storage system, we can create a more intelligent mechanism that avoids many of the problems inherent to traditional caching. Methods for prioritizing data and passing this information through the filesystem will be discussed, as well as a performance analysis of small file IO in Lustre with cache hinting, and possible future enhancements.”

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