公开(公告)号：US06425057B1

公开(公告)日：2002-07-23

申请号：US09140977

申请日：1998-08-27

申请人： Ludmila Cherkasova ,  Martin F. Arlitt ,  Richard J. Friedrich ,  Tai Jin

发明人： Ludmila Cherkasova ,  Martin F. Arlitt ,  Richard J. Friedrich ,  Tai Jin

IPC分类号： G06F1212

CPC分类号： G06F17/30607 ,  G06F12/121 ,  G06F12/122

摘要： A method and system for caching objects and replacing cached objects in an object-transfer environment maintain a dynamic indicator (Pr(f)) for each cached object, with the dynamic indicator being responsive to the frequency of requests for the object and being indicative of the time of storing the cached object relative to storing other cached objects. In a preferred embodiment, the size of the object is also a factor in determining the dynamic indicator of the object. In the most preferred embodiment, the cost of obtaining the object is also a factor. A count of the frequency of requests and the use of the relative time of storage counterbalance each other with respect to maintaining a cached object in local cache. That is, a high frequency of requests favors maintaining the object in cache, but a long period of cache favors evicting the object. Thus, cache pollution is less likely to occur.

摘要翻译： 用于缓存对象并替换对象传送环境中的缓存对象的方法和系统为每个缓存对象维护动态指示符（Pr（f）），动态指示符响应于对象的请求频率， 存储缓存对象相对于存储其他缓存对象的时间。 在优选实施例中，对象的大小也是确定对象的动态指示符的因素。 在最优选的实施例中，获得对象的成本也是一个因素。 关于在本地高速缓存中维护缓存的对象，请求的频率的计数和相对于存储的相对时间的使用相互平衡。 也就是说，高频率的请求有利于将对象保持在缓存中，但长时间的缓存有利于驱逐对象。 因此，缓存污染不太可能发生。

公开(公告)号：US07349902B1

公开(公告)日：2008-03-25

申请号：US09368635

申请日：1999-08-04

申请人： Martin F. Arlitt ,  John A. Dilley ,  Richard J. Friedrich ,  Tai Y. Jin ,  Stephane J Perret

发明人： Martin F. Arlitt ,  John A. Dilley ,  Richard J. Friedrich ,  Tai Y. Jin ,  Stephane J Perret

IPC分类号： G06F17/30

CPC分类号： G06F17/30902 ,  H04L67/1095 ,  H04L67/28 ,  H04L67/2842 ,  Y10S707/99938 ,  Y10S707/99939 ,  Y10S707/99952

摘要： A data access network system is described that includes a content server coupled to a plurality of proxy servers via an interconnect network. The content server store at least one content file. The data access network system also includes a system of maintaining content consistency between the content server and the proxy servers. The system includes a subscription manager in the content server that specifies all of the proxy servers that are subscribed to the content file. The system also includes a consistency manager that notifies all of the subscribed proxy servers that cache the content file to discard the cached content file from those proxy servers when the content file is updated in the content server. A method of maintaining content consistency between the content server and the proxy servers is also described.

摘要翻译： 描述了一种数据访问网络系统，其包括通过互连网络耦合到多个代理服务器的内容服务器。 内容服务器存储至少一个内容文件。 数据访问网络系统还包括维护内容服务器与代理服务器之间内容一致性的系统。 该系统包括内容服务器中的订阅管理器，其指定订阅内容文件的所有代理服务器。 该系统还包括一个一致性管理器，当在内容服务器中更新内容文件时，通知所有订阅的代理服务器缓存内容文件以从这些代理服务器丢弃缓存的内容文件。 还描述了维护内容服务器和代理服务器之间的内容一致性的方法。

公开(公告)号：US06272598B1

公开(公告)日：2001-08-07

申请号：US09273849

申请日：1999-03-22

申请人： Martin F. Arlitt ,  Richard J. Friedrich ,  Tai Y. Jin

发明人： Martin F. Arlitt ,  Richard J. Friedrich ,  Tai Y. Jin

IPC分类号： G06F1208

CPC分类号： G06F17/30902 ,  G06F12/0897 ,  G06F12/121

摘要： A cache system is described that includes a storage that is partitioned into a plurality of storage areas, each for storing one kind of objects received from remote sites and to be directed to target devices. The cache system further includes a cache manager coupled to the storage to cause objects to be stored in the corresponding storage areas of the storage. The cache manager causes cached objects in each of the storage areas to be replaced in accordance with one of a plurality of replacement policies, each being optimized for one kind of objects.

摘要翻译： 描述了包括分割成多个存储区域的存储器的高速缓存系统，每个存储区域用于存储从远程站点接收的并且被定向到目标设备的一种对象。 缓存系统还包括耦合到存储器的高速缓存管理器，以使对象被存储在存储器的相应存储区域中。 缓存管理器使得根据多个替换策略中的一个替换每个存储区域中的缓存对象，每个替换策略针对一种对象进行了优化。

公开(公告)号：US06189033B1

公开(公告)日：2001-02-13

申请号：US09116716

申请日：1998-07-16

申请人： Tai Jin ,  James D. Salehi ,  Richard J. Friedrich ,  Nina T. Bhatti

发明人： Tai Jin ,  James D. Salehi ,  Richard J. Friedrich ,  Nina T. Bhatti

IPC分类号： G06F15173

CPC分类号： G06F17/30902 ,  H04L29/12009 ,  H04L29/12207 ,  H04L61/20 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1012 ,  H04L67/1014 ,  H04L67/322

摘要： A data service system is described that includes a plurality of data content sites and is coupled to a number of user terminals via a network. The data service system also includes a system for providing performance guarantees for the content sites. The system for providing performance guarantees includes a plurality of class processors, each for controlling access throughput of one of the content sites in accordance with a predetermined admission control policy. When one of the class processors receives an access request for one of the content sites, that class processor determines if the access request should be accepted based on the corresponding admission control policy and sends the access request to the corresponding content site when accepting the access request. The system also includes a classifier that determines to which one of the class processors the access request should be sent. A method of controlling access throughput of the content sites is also described.

摘要翻译： 描述了包括多个数据内容站点并且经由网络耦合到多个用户终端的数据服务系统。 数据服务系统还包括用于为内容站点提供性能保证的系统。 用于提供性能保证的系统包括多个类处理器，每个处理器用于根据预定的准入控制策略来控制一个内容站点的访问吞吐量。 当其中一个类处理器接收到一个内容站点的访问请求时，该类处理器根据对应的准入控制策略确定是否应该接受访问请求，并且在接受访问请求时将访问请求发送到对应的内容站点 。 该系统还包括分类器，其确定应该向哪个类处理器发送访问请求。 还描述了一种控制内容站点的访问吞吐量的方法。

公开(公告)号：US06304906B1

公开(公告)日：2001-10-16

申请号：US09130636

申请日：1998-08-06

申请人： Nina T. Bhatti ,  Richard J. Friedrich ,  Tai Jin ,  Anna M. Zara

发明人： Nina T. Bhatti ,  Richard J. Friedrich ,  Tai Jin ,  Anna M. Zara

IPC分类号： G06F1516

CPC分类号： H04L12/2856 ,  H04L12/2874 ,  H04L47/10 ,  H04L47/15 ,  H04L47/19 ,  H04L47/24 ,  H04L47/70 ,  H04L47/808 ,  H04L47/821 ,  H04L63/102 ,  H04L67/02 ,  H04L67/327

摘要： A data service system is accessible through a plurality of access requests. The data service system includes a user access request classification system for classifying the access requests. The user access request classification system includes a request classifier that classifies each of the access requests into one of a plurality of classes based on a predetermined classification policy. The user access request classification system also includes a plurality of buffers coupled to the request classifier. Each buffer corresponds to one of the classes to receive the access requests classified by the request classifier as belonging to that class such that the data service system processes the access requests in accordance with their classes. A method of classifying user access requests for the data service system is also described.

摘要翻译： 数据服务系统可通过多个访问请求访问。 数据服务系统包括用于对访问请求进行分类的用户访问请求分类系统。 用户访问请求分类系统包括：请求分类器，其基于预定的分类策略将每个访问请求分类为多个类别中的一个。 用户访问请求分类系统还包括耦合到请求分类器的多个缓冲器。 每个缓冲器对应于接收由请求分类器归类为属于该类的访问请求的类之一，使得数据服务系统根据其类来处理访问请求。 还描述了对数据服务系统的用户访问请求进行分类的方法。

公开(公告)号：US07447920B2

公开(公告)日：2008-11-04

申请号：US10929448

申请日：2004-08-31

申请人： Ratnesh K. Sharma ,  Chandrakant D. Patel ,  Cullen E. Bash ,  Richard J. Friedrich

发明人： Ratnesh K. Sharma ,  Chandrakant D. Patel ,  Cullen E. Bash ,  Richard J. Friedrich

IPC分类号： G06F1/00 ,  G06F15/173

CPC分类号： G06F9/505 ,  G06F9/5061 ,  G06F9/5094 ,  G06F2209/5022 ,  H05K7/20836 ,  Y02D10/22 ,  Y02D10/36

摘要： A method of workload placement among servers includes receipt of a workload request. The method also includes selection of a group of servers from a set of servers capable of performing the requested workload. In addition, server workload indexes, which are ratios of temperature rises due to re-circulation load for the servers in the group of servers to temperature rises due to re-circulation load for the set of servers, of the servers in the group of servers are calculated. Moreover, the workload is placed on one or more of the servers in the group of servers based upon the server workload indexes of the servers in the group of servers.

摘要翻译： 服务器之间的工作负载布局方法包括工作负载请求的接收。 该方法还包括从能够执行所请求的工作负荷的一组服务器中选择一组服务器。 另外，服务器工作负载指数是由于服务器组中的服务器的重新流动负载导致的温度升高的比率，由于服务器组中的服务器的服务器的服务器的服务器的重新流动负载导致的温度上升 被计算。 此外，基于服务器组中的服务器的服务器工作负载索引，工作负载被放置在服务器组中的一个或多个服务器上。

公开(公告)号：US6003079A

公开(公告)日：1999-12-14

申请号：US807073

申请日：1997-02-27

申请人： Richard J. Friedrich ,  Jerome Rolia

发明人： Richard J. Friedrich ,  Jerome Rolia

IPC分类号： H04L12/24 ,  H04B3/46

CPC分类号： H04L41/5009 ,  H04L41/5035

摘要： A system and method for measuring quality-of-service in a federated application environment is described. One or more administrative domains are provided with each administrative domain being interconnected with at least one other administrative domain to form the federated application environment. One or more interconnected network nodes are situated within each administrative domain with each network node including at least one capsule interface within which a managed method is executed. Instrumentation is associated with each capsule interface of each network node with the instrumentation collecting performance data on the managed method being executed within the capsule interface. A count sensor determines a processing time with the instrumentation within the capsule interface for each managed method. A network sensor determines send and receive bandwidth demand information with the instrumentation within the capsule interface for each managed method. A demand sensor determines physical host resource demands as needed to satisfy invocations of the managed method with the instrumentation within the capsule interface for each managed method. An interval sensor determines response times with the instrumentation within the capsule interface for each managed method. A display displays the throughput metrics, bandwidth demand metrics, service demand metrics and response time metrics.

摘要翻译： 描述了用于测量联合应用环境中的服务质量的系统和方法。 提供一个或多个管理域，每个管理域与至少一个其他管理域互连以形成联合应用环境。 一个或多个互连的网络节点位于每个管理域内，每个网络节点包括至少一个胶囊接口，在其中执行被管理的方法。 仪器与每个网络节点的每个胶囊接口相关联，仪器集中在胶囊接口中执行的管理方法上的性能数据。 计数传感器使用每个管理方法的胶囊接口内的仪器来确定处理时间。 网络传感器通过每个管理方法的胶囊接口内的仪器来确定发送和接收带宽需求信息。 需求传感器根据需要确定物理主机资源需求，以满足对于每个管理方法的胶囊接口内的仪器的托管方法的调用。 间隔传感器通过每个管理方法的胶囊接口内的仪器来确定响应时间。 显示器显示吞吐量指标，带宽需求指标，服务需求指标和响应时间指标。

公开(公告)号：US5958009A

公开(公告)日：1999-09-28

申请号：US807734

申请日：1997-02-27

申请人： Richard J. Friedrich ,  Joseph J. Matinka ,  Tracy F. Sienknecht

发明人： Richard J. Friedrich ,  Joseph J. Matinka ,  Tracy F. Sienknecht

IPC分类号： H04L12/26 ,  G06F13/00

CPC分类号： H04L43/00 ,  H04L12/2602 ,  H04L43/10 ,  H04L43/028 ,  H04L43/12 ,  H04L43/16

摘要： A measurement system and method of instrumenting a computer program for efficiently monitoring the quality of service in a distributed processing environment are described. A plurality of interconnected network nodes in a computer system with an application process operating on each network node is provided. At least one intelligent sensor is associated with each application process. Each intelligent sensor selectively collects data about at least one of the network node upon which the associated application process operates and the associated application process. An observer is associated with each application process and filters out unchanged and zero values from the data collected by the at least one intelligent sensor. A collector is logically associated with each network node. The intervalized collected data is asynchronously received into the collector periodically pushed from the observer. An analyzer is associated with the distributed processing environment and correlates the intervalized collected data. The intervalized collected data is asynchronously received into the analyzer periodically pushed from the collector.

摘要翻译： 描述了在分布式处理环境中有效监视服务质量的计算机程序的测量系统和方法。 提供了具有在每个网络节点上运行的应用进程的计算机系统中的多个互连的网络节点。 至少一个智能传感器与每个应用过程相关联。 每个智能传感器选择性地收集关于相关联的应用进程操作的网络节点中的至少一个以及相关联的应用进程的数据。 观察者与每个应用过程相关联，并且从由至少一个智能传感器收集的数据中滤除不变的零值。 收集器与每个网络节点逻辑关联。 间隔收集的数据被异步地接收到从观察者周期性推送的收集器中。 分析器与分布式处理环境相关联，并将间隔收集的数据相关联。 间隔收集的数据被异步地收集到从收集器周期性地推送到分析器中。