US 9,071,540 B2Granted

Proxy server, hierarchical network system, and distributed workload management method

AssigneeInternational Business Machines Corporation

InventorsWen Jie Wang, Hai Shan Wu, Bo Yang, Yi Xin Zhao

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Abstract

A proxy server and a hierarchical network system and a distributed workload management method. According to one embodiment of this disclosure, the proxy server includes: a rate controller configured to, based on measured request-related information and service quality parameters relative to service levels of requests, periodically determine a dispatch rate for requests of each service level, wherein the sum of the dispatch rate for respective service levels is less than or equal to a predetermined rate; and a request dispatcher configured to dispatch the requests of the corresponding service level in accordance with the dispatch rate determined by the rate controller. One aspect of the disclosure realizes a low overhead, highly scalable, simple and efficient workload management system to achieve QoS assurance and overload protection.

Claims5

Dependent claims

A hierarchical network system, comprising:

at least one proxy server, comprising:
a rate controller configured to, based on measured request-related information and service quality parameters relative to service levels of requests, periodically determine a dispatch rate for requests of each service level, wherein a sum of said dispatch rate for respective service levels is less than or equal to a predetermined rate;
and a request dispatcher configured to dispatch said requests of the corresponding service level in accordance with said dispatch rate determined by said rate controller;
and
an application server configured to serve said at least one proxy server, comprising:
a resource detector configured to periodically detect a current usage of resources of said application server and a current request arrival rate;
a maximum rate calculator configured to, based on said detected current resource usage, said current request arrival rate and a target usage of the resource, calculate a maximum admitted rate of requests for a next management cycle;
and
a rate distributor configured to distribute the maximum admitted rate for each proxy server as its predetermined rate based on a predetermined policy.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/592,932Filed 23 Aug 2012 · continuation
Priority: CN 2011 1 007771430 Mar 2011
Published: US 2012/0254413 A113 Dec 2012
Granted: 30 Jun 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 47/22
Flow control; Congestion control: traffic shaping
H04L 67/1097
In which an application is distributed across nodes in the network: for distributed storage of data in networks, e.g. transport arrangements for…
H04L 67/51
Network services: discovery or management thereof, e.g. service location protocol [SLP] or web services
H04L 47/2425
Traffic characterised by specific attributes, e.g. priority or QoS: for supporting services specification, e.g. SLA

Family

Application13/430,948Parent of this continuation · filed 27 Mar 2012
US 2012/0317283 A1Pre-grant publication · published 13 Dec 2012
US 2012/0254413 A1Published application
US 9,712,448 B2Related patent
US 9,071,540 B2This patent

From the US filing history. Foreign family members aren’t listed.