Caching or evicting host-resident translation layer based on counter

A system comprising:

• a memory device;
• and
• a processing device, operatively coupled with the memory device, to perform operations comprising:
• maintaining a plurality of counters to track a number of read operations performed on a corresponding plurality of regions of a logical address space of the memory device;
• incrementing, in response to receiving a read command comprising an indication of a sub-region of a respective region of the plurality of regions, a respective counter of the plurality of counters by an amount that varies based on a transfer length associated with the received read command;
• and responsive to incrementing the respective counter:
• (i) determining whether the respective counter is saturated;
• responsive to the respective counter being saturated, determining whether a number of saturated counters, of the plurality of counters, satisfies a saturation threshold criterion;
• responsive to the number of saturated counters satisfying the saturation threshold criterion, detecting an occurrence of a recency event on the memory device;
• periodically decrementing the plurality of counters in response to the occurrence of the recency event on the memory device;
• responsive to decrementing the plurality of counters, determining whether the respective counter satisfies an evictable threshold criterion;
• and
• responsive to the respective counter satisfying the evictable threshold criterion, adding an indication of the respective region to an eviction list;
• and
• (ii) determining whether one or more of the plurality of counters satisfies a cacheable threshold criterion;
• and
• responsive to the one or more of the plurality of counters satisfying the cacheable threshold criterion:
• sending a recommendation that translation layer mapping data corresponding to each region of the plurality of regions be stored in a host-resident translation layer mapping table;
• and
• receiving, subsequent to sending the recommendation, a request targeting one of the translation layer mapping data corresponding to each of the plurality of regions.

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

• maintaining a plurality of counters to track a number of read operations performed on a corresponding plurality of regions of a logical address space of a memory device;
• incrementing, in response to receiving a read command comprising an indication of a sub-region of a respective region of the plurality of regions, a respective counter of the plurality of counters by an amount that varies based on a transfer length associated with the received read command;
• and
• responsive to incrementing the respective counter:
• (i) determining whether the respective counter is saturated;
• responsive to the respective counter being saturated, determining whether a number of saturated counters, of the plurality of counters, satisfies a saturation threshold criterion;
• responsive to the number of saturated counters satisfying the saturation threshold criterion, detecting an occurrence of a recency event on the memory device;
• periodically decrementing the plurality of counters in response to the occurrence of the recency event on the memory device;
• responsive to decrementing the plurality of counters, determining whether the respective counter satisfies an evictable threshold criterion;
• and
• responsive to the respective counter satisfying the evictable threshold criterion, adding an indication of the respective region to an eviction list;
• and
• (ii) determining whether one or more of the plurality of counters satisfies a cacheable threshold criterion;
• and
• responsive to the one or more of the plurality of counters satisfying the cacheable threshold criterion:
• sending a recommendation that translation layer mapping data corresponding to each region of the plurality of regions be stored in a host-resident translation layer mapping table;
• and
• receiving, subsequent to sending the recommendation, a request targeting one of the translation layer mapping data corresponding to each of the plurality of regions.