Jean Yanick Pierre

US Patent:

20220229582, Jul 21, 2022

Filed:

Jan 20, 2021

Appl. No.:

17/152854

Inventors:

- Hopkinton MA, US
Erik P. Smith - Douglas MA, US
Jean Evans Pierre - Brockton MA, US

International Classification:

G06F 3/06

Abstract:

An apparatus in one embodiment comprises at least one processing device configured to control delivery of input-output (IO) operations from a host device to a storage system over selected ones of a plurality of paths through a network, and to monitor response times for particular ones of the IO operations sent from the host device to the storage system. The at least one processing device is further configured to interact with the storage system to determine network latency from a viewpoint of the storage system, and responsive to (i) at least a subset of the monitored response times being above a first threshold and (ii) the network latency from the viewpoint of the storage system being above a second threshold, to at least temporarily modify a manner in which additional ones of the IO operations are sent from the host device to the storage system.

US Patent:

20200244583, Jul 30, 2020

Filed:

Jan 29, 2019

Appl. No.:

16/260499

Inventors:

- Hopkinton MA, US
Jean E. Pierre - Brockton MA, US
Richard Isaac - Stoughton MA, US
Arieh Don - Newton MA, US

Assignee:

EMC IP Holding Company LLC - Hopkinton MA

International Classification:

H04L 12/825
H04L 12/815
G06F 13/38

Abstract:

Techniques for transmitting data may include: receiving, at a host, an initiator data transfer rate indicating a communication rate at which an initiator port of the host communicates over a first path using a communications fabric with a target port of a data storage system; receiving, at the host, a target data transfer rate indicating a communication rate at which the target port of the data storage system communicates over the first path using the communications fabric with the initiator port of the host; determining, at the host, whether the initiator data transfer rate and the target data transfer rate are different; and responsive to determining that the initiator data transfer rate and the target data transfer rate are different, performing processing that limits a rate at which data is transmitted between the initiator and target ports in accordance with the initiator and target data transfer rates.