March 2004
Intermediate to advanced
440 pages
11h 46m
English
book
DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
by Whei-Jen Chen, Peter Z He, Kang Yong Ying, Andreas Paulsen, Sunminder S Saini
Content preview from DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
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Chapter 4. DB2 UDB V8 and WAS V5 integrated environment 95
4.4.7 Vertical scaling
Vertical scaling provides a straightforward mechanism for creating multiple
instances of an application server, and hence multiple JVM processes. In the
simplest case, one can create many application servers on a single machine, and
this single machine also runs the HTTP server process. This configuration is
illustrated in Figure 4-8.
Figure 4-8 Vertical scaling
Some reasons to use vertical scaling are:
Performance: Better use of the CPU.
An instance of an application server runs in a single Java Virtual Machine
(JVM) process. However, the inherent concurrency lim ...
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