Intel 7xx Servers, 170 Servers, AS/400 RISC Server Trade Jdbc Response Time 1 User Time seconds

Figure 6.6 provides insight into response time information regarding low-end System i models. There are two key concepts that are displayed in the data in Figure 6.6. The first is that Accelerator for System i models can provide substantially better response times than previous models for a single or many users. The 600 CPW accelerated to 3100 CPW reduces the response time by 5 times while the 1200 CPW accelerated to 3800 CPW reduces the response time by 2.5 times. The second idea to note is that the presence of L3 cache has little effect on the response time of a single user. Of course there are benefits of L3 cache, however, the absence of L3 cache does not imply poorer performance with regards to response time.

Trade JDBC Response Time (1 User)

	0.09
	0.08
	0.07
time (seconds)	0.06
	0.05
	0.04
response
	0.03
	0.02
	0.01
	0
	500	600	1000 1200 2400 3100 3300 3800

CPW Rating

New Models

Accelerator

Old Models

Figure 6.6 - Accelerator for System i performance data - Single user response time comparison (WAS 6.0 running Trade 6).

IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
© Copyright IBM Corp. 2008	Chapter 6 - Web Server and WebSphere	104