Back to results
US 2022/0027048 A1Published application
Garbage Collection Pacing in a Storage System
AssigneeNetApp, Inc.
InventorJoseph Blount
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNetApp, Inc.
InventorJoseph Blount
Estimating the term…
A system and method for improving storage system performance by reducing or avoiding load spike amplification when performing garbage collection is disclosed. A storage controller in a storage system tracks system load including write load and read load, as well as available free segments. The storage controller uses these tracked values as inputs and, with these inputs, generates a garbage collection rate. Where read load is included, a scaled portion of the read load is taken into consideration so that, as the number of free segments nears the minimum amount desired and to prevent garbage collecting too slowly, the read load is gradually excluded from the garbage collection rate determination. The garbage collection rate is therefore responsive to system load so that, in times of high system load, the rate reduces as much as is safe so that the write load takes priority with computing resources of the storage controller.
A method, comprising:
A non-transitory machine readable medium having stored thereon instructions for performing a method comprising machine executable code which when executed by at least one machine, causes the at least one machine to:
A computing device comprising:
Dependencies are inferred from the claim text.