Least mean square dynamic cache-locking
View Patent ↗A dynamic cache-locking algorithm may determine the most frequently used function(s) and the number of cache lines that should be locked into the instruction cache embedded into a processor. By evaluating the dynamic cache-locking algorithm, a determination may be made to lock an optimal amount of functions that correspond to a given, limited amount of instruction cache.
1. A method comprising:
running a provided service in a processor using a cache;
determining whether to lock or unlock lines of the cache in accordance with output from a dynamic cache-locking algorithm that receives cache characteristics for the provided service.
2. The method of claim 1 , further including:
using the dynamic cache-locking algorithm to lock at least one of an instruction cache, a data cache, an L2 cache or an OS-managed internal memory.
3. A method comprising:
running a provided service in a processor using a cache; and
selecting lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for the provided service wherein evaluating the dynamic cache-locking algorithm further includes:
evaluating a Least-Mean-Square (LMS) based algorithm.
4. A method comprising:
running a provided service in a processor using a cache;
selecting lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for the provided service; and
receiving data stored in a history table for functions corresponding to the provided service in the processor.
5. A method comprising:
running a provided service in a processor using a cache;
selecting lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for the provided service; and
receiving an optimum number of cache misses for functions corresponding to the provided service in the processor.
6. A method comprising:
running a provided service in a processor using a cache;
selecting lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for the provided service; and
selecting lines of the cache to lock corresponding to frequently used services.
7. An article comprising:
a computer readable storage medium, the medium having stored thereon instructions, the instructions, when executed, resulting in a method of selecting lines of a cache to lock in accordance with results from evaluating a dynamic cache-locking algorithm that receives cache characteristics for a service provided by a processor.
8. A method comprising:
determining cache misses for a service being operated by a processor; and
dynamically cache-locking lines of a cache based on a number of cache-misses in a time interval.
9. The method of claim 8 , wherein dynamically cache-locking further includes evaluating a Least Means Square (LMS) based algorithm.
10. The method of claim 9 , further including:
storing data in a history table that corresponds to the service provided by the processor, the stored data used to evaluate the LMS based algorithm.
11. The method of claim 8 , further including:
using the dynamic cache-locking algorithm to lock at least one of an instruction cache, a data cache, an L2 cache or an OS-managed internal memory.
12. A system comprising:
an omni-directional antenna;
a receiver coupled to the omni-directional antenna to process a modulated signal; and
a processor coupled to receive quadrature signals from the receiver, the processor having a cache where an operating system of the processor selects lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for a service provided by the processor, wherein evaluating the dynamic cache-locking algorithm includes evaluating a Least-Mean-Square (LMS) based algorithm.
13. A system comprising:
an omni-directional antenna;
a receiver coupled to the omni-directional antenna to process a modulated signal; and
a processor coupled to receive quadrature signals from the receiver, the processor having a cache where an operating system of the processor selects lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for a service provided by the processor, wherein a service provided by the processor is selected from at least a timer Interrupt Service Routine (ISR) service, a Direct Memory Access (DMA) service and a flush Cache service.
14. A system comprising:
an omni-directional antenna;
a receiver coupled to the omni-directional antenna to process a modulated signal; and
a processor coupled to receive quadrature signals from the receiver, the processor having a cache where an operating system of the processor selects lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for a service provided by the processor, wherein a result of the dynamic cache-locking algorithm depends on data in a stored history table that corresponds to the service provided by the processor.
15. A system comprising:
an omni-directional antenna;
a receiver coupled to the omni-directional antenna to process a modulated signal; and
a processor coupled to receive quadrature signals from the receiver, the processor having a cache where an operating system of the processor selects lines of the cache to lock in accordance with evaluating a dynamic cache-locking algorithm that receives cache characteristics for a service provided by the processor, wherein a result of the dynamic cache-locking algorithm depends on cache-misses during set time intervals.