Performance aware partial cache collapse

An apparatus for performing a partial cache collapse procedure, comprising:

• memory comprising computer-executable instructions;
• and
• one or more processors configured to execute the computer-executable instructions and cause the apparatus to:
• count a number of cache lines that satisfy an eviction criteria based on a deterministic cache eviction policy in each cache way of a group of cache ways;
• select at least one cache way from the group for collapse, based on its corresponding number of cache lines that satisfy the eviction criteria, wherein to select the at least one cache way, the one or more processors are configured to cause the apparatus to:
• select, for collapse, one cache way having a highest number of cache lines that satisfy the eviction criteria, or
• select multiple cache ways having highest numbers of cache lines that satisfy the eviction criteria;
• and
• perform the partial cache collapse procedure based on the at least one cache way selected from the group for collapse.

A non-transitory computer-readable medium comprising computer-executable instructions that, when executed by one or more processors of an apparatus, cause the apparatus to perform a partial cache collapse procedure, comprising:

• counting a number of cache lines that satisfy an eviction criteria based on a deterministic cache eviction policy in each cache way of a group of cache ways;
• selecting at least one cache way from the group for collapse, based on its corresponding number of cache lines that satisfy the eviction criteria, wherein selecting the at least one cache way comprises one or more of:
• selecting, for collapse, one cache way having a highest number of cache lines that satisfy the eviction criteria, or
• selecting multiple cache ways having highest numbers of cache lines that satisfy the eviction criteria;
• and
• performing the partial cache collapse procedure based on the at least one cache way selected from the group for collapse.

An apparatus for performing a partial cache collapse procedure, comprising:

• means for counting a number of cache lines that satisfy an eviction criteria based on a deterministic cache eviction policy in each cache way of a group of cache ways;
• means for selecting at least one cache way from the group for collapse, based on its corresponding number of cache lines that satisfy the eviction criteria, wherein the means for selecting comprise one or more of:
• means for selecting, for collapse, one cache way having a highest number of cache lines that satisfy the eviction criteria, or
• means for selecting multiple cache ways having highest numbers of cache lines that satisfy the eviction criteria;
• and
• means for performing the partial cache collapse procedure based on the at least one cache way selected from the group for collapse.