Dynamic cache partition manager in heterogeneous virtualization cloud cache environment

A system, comprising:

• at least two virtual machine servers, each of the at least two virtual machine servers including:
• a processor;
• a memory;
• at least one virtual machine;
• and
• a virtual machine hypervisor to manage the operations of the at least one virtual machine;
• at least one cache including at least one storage device;
• and
• a Dynamic Cache Partition Manager (DCPM) Controller to manage the division of the at least one cache into a performance guarantee zone and a spike buffer zone in each of a plurality of epochs, the performance guarantee zone including regions for each of the at least one virtual machine on each of the at least two virtual machine servers, the spike buffer zone storing workload spike data for each of the at least one virtual machine on each of the at least two virtual machine servers, the DCPM Controller including:
• a reusability statistic calculator to calculate a reusability statistic for data stored in the at least one cache during a previous epoch;
• a comparator to compare the reusability statistic with a spike threshold;
• an access statistic calculator to calculate an access statistic for first data stored in a first performance guarantee zone during the previous epoch;
• a spike data identifier to identify second data in a first spike buffer zone during the previous epoch that satisfies the access statistic;
• and
• a cache partitioner to partition the at least one cache into a second performance guarantee zone for a new epoch and a second spike buffer zone for the new epoch so that the second spike buffer zone is large enough to store the second data.

A method, comprising:

• dividing a cache into a first performance guarantee zone and a first spike buffer zone;
• determining a reusability statistic for data stored in the cache in a previous epoch;
• and
• if the reusability statistic is at least as large as a spike threshold:
• determining an access statistic for first data stored in the first performance guarantee zone in a previous epoch;
• identifying second data stored in the first spike buffer zone during the previous epoch that satisfies the access statistic;
• and
• redividing the cache into a second performance guarantee zone for a new epoch and a second spike buffer zone for the new epoch so that the second spike buffer zone is large enough to store the second data.