CHAPTeR 9 DXP PeRfORMANCe OPTIMIzATION Quantitative Assessment During this phase the performance test scripts are executed, and the performance engineering team monitors the system behavior and the following server infrastructure components. 1. Resource level a. Utilization (CPU, disk, memory, network) b. Throughput c. Response time d. User load 2. Web server a. Maximum threads b. Keep alive connections 3. Application server a. Execution threads b. Object pooling c. Execute queue length d. Entity beans pool e. JDBC connection pooling f. Garbage collection g. Response time of servlets 4. Database server a. Buffer cache hit ratio b. Redo logs, top 5 SQL statements c. Indexes d. Buffer waits Performance testing results will be compared against the specified SLAs. All issues identified in performance testing will be addressed. 246