Enterprise Library Test Guide - Willy .Net

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Testing for Performance and Scalability 229 Hardware Configurations Table 27 lists the hardware configuration for the Enterprise Library scalability tests. Table 27: Hardware Configurations for Scalability Tests Server A Server B Server C Server D Server E Architecture 32 bit 32 bit 64 bit 64 bit 64 bit Number of processors 2 4 2 4 4 Processor speed 2,790 Mhz 1,903 Mhz 1,804 Mhz 1,804 Mhz 1,804 Mhz Physical Memory 1024 MB 4048 MB 3072 MB 3072 MB 5098 MB Manufacturer/ Model Characteristics HP DL 380 PROLIANT G3 Intel Xeon Prestonia processors (2.8 GHz) with a 512 KB level 3 processor cache and Hyper Threading Technology HP DL 560 PROLIANT G1 Intel (1.8 GHz) with a 2 MB level 3 processor cache and Hyper Threading Technology HP DL 385 PROLIANT G1 1 MB level 3 processor cache and Hyper Threading Technology HP DL 385 PROLIANT G1 1 MB level 3 processor cache and Hyper Threading Technology HP DL 385 PROLIANT G1 1 MB level 3 processor cache and Hyper Threading Technology Scalability Test Scenarios and Results The scalability tests use scenarios for the Logging Application Block, the Caching Application Block, and the Data Application Block. The scenarios are: ● ● ● Logging Application Block. Write a message to the event log. Caching Application Block. Add an item to the in-memory cache. (Each execution thread generates a unique key for every item.) Data Application Block. Execute a stored procedure that returns one row from the Northwind sample database. Each scenario simulated 1, 10, 50, and 150 users. Analysis of Logging Application Block Scalability Test Figure 6 is a graph of the test results. It shows the results for both the 32-bit computers and 64-bit computers, each with 2 processors and then 4 processors.
230 Enterprise Library Test Guide Figure 6 Scalability results for Logging Application Block The servers are always CPU bound. Other than the processors, there are no other dependencies that can cause bottlenecks. The change in memory size between the 2-processor configuration and 4-processor configurations (for both the 32-bit computers and 64-bit computers) did not affect the relevant measurements. Here is a summary of the results: ● ● ● ● The 64-bit computers outperform the 32-bit computers by 45 percent for the transactions per second measurement and for the total transactions measurement. For all cases shown in Figure 6, there should be no I/O activity when the % Disk Time performance counter is less than 7 percent. The 32-bit computers with 2 processors could not support more than 10 concurrent users. The 32-bit computers with 4 processors could not support more than 50 concurrent users. The 64-bit computers with 2 processors could not support more than 10 concurrent users. The 64-bit computers with 4 processors could not support more than 50 concurrent users. Scalability increases as more concurrent users are added to the test mix. Scalability increases are greatest when moving from a 2-processor computer to a 4-processor computer. Moving from a 32-bit computer to a 64-bit computer yields smaller increases. The servers’ working sets always require less than 40 MB for all configurations. The working set of an application is the set of memory pages currently available in RAM.
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Enterprise Library Test Guide
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iv Contents Testing the Logging App
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Introduction Enterprise Library Tes
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Introduction This section provides
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Introduction Performing Code Revie
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Introduction Setting Up the Crypto
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