Implementing a Load-balancing Web
Server Using Red Hat Cluster Suite
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Implementing - Network Processing Architectures - Lecture Slides, Slides of Computer Architecture and Organization
Some concept of Network Processing Architectures are Anatomy, Cache Access Time, Instruction Formats, Instruction Formats, Instruction Formats, Multidimensional Meshes, Network Processors, Snooping Protocol. Main points of this lecture are: Implementing, Load-Balancing Web, Red Hat Cluster Suite, Building a Load-Balancing, Project Goals, Web Server, Performance Evaluation, Working Environment, Load-Balancing Support, Measurement and Comparison
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2012/2013
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Implementing a Load-balancing Web
Server Using Red Hat Cluster Suite
Project Goals
- Building a load-balancing web server
- Performance evaluation
Load-balancing Web Servers
- Balancing the load among the servers
- Providing:
- High throughput
- High availability
Two Classes of Locally Distributed
Architecture for Web Sites
- Cluster-based web systems
- Virtual IP address
- Distributed web systems
- IP address visible to client applications
Architecture of a Distributed Web
System
System Environment
- Web-serving cluster: Linux cluster
- DBMS: MySQL
- Benchmarks: TPC Benchmark
A Basic LVS Configuration
MySQL Database Services
- Serve highly available data to applications.
- MySQL server packages are installed on each cluster system that will run the service.
- Database data is accessed by all cluster members.
TPC Benchmarks
• TPC-C -- OLTP
- TPC-H – decision support for AD hoc queries
- TPC-W – web e-commerce
- TPC-R – decision support for business reporting
References:
- IBM Research Report: the State of the Art in Locally Distributed Web-Server Systems, Valeria Cardellini, Emiliano Casalicchio, Michele Colajanni
- Www.redhat.Com/manuals/enterprise/RHEL-3- manual/cluster-suite
- Comparing the Memory System Performance of DSS Workloads on the HP V-class and SGI Origin 2000, Rong Yu, Laxmi Bhuyan, Ravi Iyer
- Building Clustered Linux Systems, Robert W. Lucke Docsity.com
Workload Charateristics
- Session
- the service initiated by a user's request for a transfer and terminated by a user's abortion of an ongoing transfer.
- Workload
- Session arrivals
- Properties of individual sessions
Session arrival
- Object Populariy
- zipf distribution
- a tendency for requests to be concentrated on a few “popular” objects
- Reference locality
- Heavy-tailed Pareto distribution
- Temporal proximity of requests to the same objects