公开(公告)号：US10439900B2

公开(公告)日：2019-10-08

申请号：US15651438

申请日：2017-07-17

Applicant: NetApp, Inc.

Inventor： David D. Wright ,  Michael Xu

IPC: G06F15/173 ,  H04L12/24 ,  G06F3/06 ,  G06F11/34 ,  H04L29/08

Abstract: A distributed storage system can maintain calculated load values of services throughout the system. The load values represent different types of load on the system. When a load value corresponding to a client changes, the load value is evaluated against thresholds to determine whether a different quality of service (QoS) policy is to be selected and implemented. If so, a function/formula indicated in the selected policy is used to calculate a scaling factor, which is then used to calculate a target performance value based on QoS parameters of the client. The system then manages access by the client according to the target performance value.

公开(公告)号：US20180097707A1

公开(公告)日：2018-04-05

申请号：US15832342

申请日：2017-12-05

Applicant: NetApp, Inc.

Inventor： David D. Wright ,  Michael Xu

IPC: H04L12/24 ,  G06F9/50 ,  G06F11/34 ,  H04L29/08

CPC classification number: H04L41/50 ,  G06F9/5083 ,  G06F11/3433 ,  G06F11/3485 ,  G06F11/3495 ,  H04L41/5025 ,  H04L67/1097 ,  H04L67/22 ,  H04L67/322

Abstract: Performance of a distributed storage system with data distributed substantially, evenly across a cluster of storage devices can be dynamically managed of the distributed storage system with respect to performance guarantees to clients of the distributed storage system. Capacity of the distributed storage system in terms of one or more metrics can be determined. This measured capacity can then be compared with allocations of the metric(s) to clients of the distributed storage system. The allocations are determined based on quality of service parameters specified for the clients. The quality of service parameters at least include a maximum value and a minimum value for each of the one or more metrics, and can also include burst credits allocated to the clients. Access to the distributed storage system by the clients can be throttled to ensure the performance guarantees corresponding to the quality of service parameters are fulfilled.

公开(公告)号：US11212196B2

公开(公告)日：2021-12-28

申请号：US17163679

申请日：2021-02-01

Applicant: NetApp, Inc.

Inventor： David D. Wright ,  Michael Xu

IPC: H04L12/24 ,  G06F3/06 ,  G06F11/34 ,  H04L29/08

Abstract: A distributed storage system monitors one or more system performance metrics and one or more client performance metrics related usage of the distributed storage system, including a read latency metric, a write latency metric, a total input/output (I/O) operations per second (IOPS) metric, a read IOPS metric, a write IOPS metric, an I/O size metric, a total bandwidth metric, a read bandwidth metric, a write bandwidth metric, a read/write ratio metric or statistical measures thereof over a period of time. When the distributed storage system is determined to be in an overload condition (e.g., when a system load value, calculated based on the performance metrics, exceeds a threshold), the distributed storage system independently throttles access to one or more components of the distributed storage system by one or more of multiple clients performing I/O operations to the distributed storage system based on their respective contribution to the overload condition.

公开(公告)号：US20200028757A1

公开(公告)日：2020-01-23

申请号：US16588594

申请日：2019-09-30

Applicant: NetApp, Inc.

Inventor： David D. Wright ,  Michael Xu

IPC: H04L12/24 ,  G06F3/06 ,  G06F11/34 ,  H04L29/08

Abstract: A storage system monitors system performance metrics and client performance metrics related to input/output (I/O) operations. The storage system, generates a performance adjustment value for each client using a proportional-integral-derivative (PID) controller to match the corresponding respective target performance value within a time period based on feedback of the respective monitored client performance metric and the system performance metric. The storage system, throttles I/O operations for each client during the time period such that the respective client performance moves toward the corresponding respective target performance value.

公开(公告)号：US09712401B2

公开(公告)日：2017-07-18

申请号：US14701832

申请日：2015-05-01

Applicant: NETAPP, INC.

Inventor： David D. Wright ,  Michael Xu

IPC: G06F15/173 ,  H04L12/24 ,  H04L29/08

CPC classification number: H04L41/5022 ,  G06F3/061 ,  G06F3/0659 ,  G06F3/067 ,  G06F11/3433 ,  G06F11/3485 ,  G06F2201/81 ,  H04L41/50 ,  H04L41/5009 ,  H04L41/5067 ,  H04L67/1097

Abstract: Disclosed are systems, computer-readable mediums, and methods for receiving client quality of service values associated with a first client. Client metrics of a volume in a storage system are determined for the first client. The client metrics reflect usage of the storage system by the first client. A client load value based is determined upon the client metrics. A quality of service management policy for the first client is determined from a plurality of quality of service management policies based upon the client load value. Each quality of service management policy comprises a formula based on a quality of service parameter. A client target performance value is determined based upon the formula of the quality of service management policy and the received client quality of service values. Performance of the storage system is adjusted for the first client based upon the client target performance value.

公开(公告)号：US09423964B1

公开(公告)日：2016-08-23

申请号：US14941938

申请日：2015-11-16

Applicant: NETAPP, INC.

Inventor： Charles Randall ,  David D. Wright ,  Michael Xu

IPC: G06F12/00 ,  G06F13/00 ,  G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/061 ,  G06F3/064 ,  G06F3/0673

Abstract: Disclosed are systems, computer-readable mediums, and methods for transforming data in a file system. As part of a recycling process, a determination is made that transformations should be attempted. A data block is determined to be in use by at least one user of the storage system. If a transformation should be attempted on the data block is determined. Parameters associated with the performance of the file system can be used in this determination. A type of transformation to be done is determined. The data block is transformed based upon the selected transformation. The transformed data block is written to the storage system. As part of the recycling process, the transformation requires no additional input/output requests.