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1. 发明授权

US08990453B1 Adaptive and optimized flow control mechanism 有权
标题翻译：自适应和优化的流量控制机制
公开(公告)号：US08990453B1
公开(公告)日：2015-03-24
申请号：US13715222
申请日：2012-12-14
申请人： Bhaskar Bora , Mark J. Halstead , Benoit J. Merlet , Dharmesh Thakkar
发明人： Bhaskar Bora , Mark J. Halstead , Benoit J. Merlet , Dharmesh Thakkar
IPC分类号： G06F3/00 , G06F3/06
CPC分类号： G06F3/061 , G06F3/0629 , G06F3/0653 , G06F3/0659 , G06F3/067 , G06F3/0683
摘要： Described are techniques for controlling a flow of I/O requests. R is received denoting a current maximum number of outstanding I/O requests allowed to be issued by a first data storage system to a second data storage system over a path. Assessment processing is performed to obtain a first performance value, a second performance value, and a third performance value, respectively, when the maximum number of outstanding I/O requests allowed to be issued by the first data storage system to the second data storage system over the path is R+delta1, R, and R−delta2 (delta1 and delta 2 are positive integer values). It is determined whether to update R in accordance with criteria including the first performance value, the second performance value and the third performance value.
摘要翻译：描述了用于控制I / O请求流的技术。 R被接收，表示允许第一数据存储系统允许通过路径向第二数据存储系统发出的未完成的I / O请求的当前最大数目。当第一数据存储系统允许向第二数据存储系统发出的最大未完成I / O请求数量分别执行评估处理以获得第一性能值，第二性能值和第三性能值在路径上是R + delta1，R和R-delta2（delta1和delta2是正整数）。确定是否根据包括第一性能值，第二性能值和第三性能值的标准更新R。

2. 发明授权

US09229638B1 Adaptive flow control for networked storage 有权
标题翻译：网络存储的自适应流量控制
公开(公告)号：US09229638B1
公开(公告)日：2016-01-05
申请号：US13161587
申请日：2011-06-16
申请人： Bhaskar Bora , Mark Halstead , Gaurav Mukul Bhatnagar
发明人： Bhaskar Bora , Mark Halstead , Gaurav Mukul Bhatnagar
IPC分类号： G06F3/00 , G06F3/06
CPC分类号： G06F3/0611 , G06F3/065 , G06F3/0653 , G06F3/067 , G06F3/0683 , G06F11/2066 , H04L67/1095
摘要： In a networked storage system in which at least one primary data storage device is mirrored by a secondary data storage device, the primary device maintains data indicative of IO response rate of the secondary and capacity of a network via which the primary device is in communication with the secondary device. The primary device uses that data to determine whether to transmit an IO request to the secondary device. For example, the primary device may use the data to calculate loading of the secondary device based on IO response rate of the secondary device. The primary device may also increase its IO transmission rate if it is determined that the response rate of the secondary device is increasing, and decrease its IO transmission rate if it is determined that the response rate of the secondary device is decreasing. In order to avoid overloading the network the primary device compares the size of an IO request against the difference between perceived network capacity and utilized network capacity to determine whether sufficient network capacity exists for the IO request.
摘要翻译：在其中至少一个主数据存储设备被辅助数据存储设备镜像的网络存储系统中，主设备维护指示主设备通过其通信的网络的次要和容量的IO响应速率的数据，辅助设备。主设备使用该数据来确定是否向辅设备发送IO请求。例如，主设备可以使用数据来基于辅助设备的IO响应速率来计算辅助设备的负载。如果确定辅助设备的响应速率正在增加，则主设备还可以增加其IO传输速率，并且如果确定辅助设备的响应速率正在减小，则其降低其IO传输速率。为了避免网络超载，主设备将IO请求的大小与感知的网络容量和所使用的网络容量之间的差异进行比较，以确定是否存在IO请求的足够的网络容量。

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