WO1999032956A3 - Dynamic load balancer for multiple network servers - Google Patents

Dynamic load balancer for multiple network servers Download PDF

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Publication number
WO1999032956A3
WO1999032956A3 PCT/US1998/025821 US9825821W WO9932956A3 WO 1999032956 A3 WO1999032956 A3 WO 1999032956A3 US 9825821 W US9825821 W US 9825821W WO 9932956 A3 WO9932956 A3 WO 9932956A3
Authority
WO
WIPO (PCT)
Prior art keywords
servers
load
load balancer
multiple network
dynamic load
Prior art date
Application number
PCT/US1998/025821
Other languages
French (fr)
Other versions
WO1999032956A2 (en
Inventor
Sajit Bhaskaran
Abraham R Matthews
Original Assignee
Holontech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holontech Corp filed Critical Holontech Corp
Priority to CA002319449A priority Critical patent/CA2319449C/en
Priority to EP98963792A priority patent/EP1116082B8/en
Priority to AU19039/99A priority patent/AU764546C/en
Publication of WO1999032956A2 publication Critical patent/WO1999032956A2/en
Publication of WO1999032956A3 publication Critical patent/WO1999032956A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G06F9/505—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering the load
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5083—Techniques for rebalancing the load in a distributed system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1006—Server selection for load balancing with static server selection, e.g. the same server being selected for a specific client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1023—Server selection for load balancing based on a hash applied to IP addresses or costs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1034—Reaction to server failures by a load balancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/10015—Access to distributed or replicated servers, e.g. using brokers

Abstract

The present invention provides methods and systems for balancing the load on a plurality of servers using a load balancing algorithm which continuously examines the loads on the plurality of servers and makes adjustments in the loads accordingly. Among the factors considered in the load balancing are the power of each server relative to other servers, the load on each server relative to the other servers, and a 'credit' for each server based on their power and load.
PCT/US1998/025821 1997-12-19 1998-12-04 Dynamic load balancer for multiple network servers WO1999032956A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002319449A CA2319449C (en) 1997-12-19 1998-12-04 Dynamic load balancer for multiple network servers
EP98963792A EP1116082B8 (en) 1997-12-19 1998-12-04 Dynamic load balancer for multiple network servers
AU19039/99A AU764546C (en) 1997-12-19 1998-12-04 Dynamic load balancer for multiple network servers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/992,038 1997-12-19
US08/992,038 US6601084B1 (en) 1997-12-19 1997-12-19 Dynamic load balancer for multiple network servers

Publications (2)

Publication Number Publication Date
WO1999032956A2 WO1999032956A2 (en) 1999-07-01
WO1999032956A3 true WO1999032956A3 (en) 2000-03-23

Family

ID=25537838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/025821 WO1999032956A2 (en) 1997-12-19 1998-12-04 Dynamic load balancer for multiple network servers

Country Status (5)

Country Link
US (1) US6601084B1 (en)
EP (2) EP1116082B8 (en)
AU (1) AU764546C (en)
CA (1) CA2319449C (en)
WO (1) WO1999032956A2 (en)

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