Solving Queuing Models

• Analytically : Too hard for computer software systems.
• Emperically : Simulation Model to get response time and throughput.
  
  

Simulation Models

Tools : DeNet, C.Sim, GPSS are languages which model concurrent activities.

• CPU speed at client/server.
• Buffer Size : 25
• Disk : No. of disks, min/max access time.
• No. of clients.
• Database size - 1250 pages * 4096 bytes/page = 5 MB, Page size, Objects per page.
• Networking CPU : Per message + per byte.
• Instructions per lock.
• Instructions per disk access.
• Instruction per copy register.