Photon Load Test #1
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A simulation was conducted to test the load of 400 concurrent users across 25 rooms with 16 players each. The server had a quad-core processor, 8GB RAM, and Windows 7 and handled 4,500 incoming messages per second and 65,000 outgoing messages per second at 30% CPU usage. Based on the simulation of 8MB/s of traffic over 30 days, the estimated monthly traffic was around 10TB. The estimated cost of the server hardware, operating system, and traffic was $400, with a cost of around $1 per concurrent user and 1 cent per monthly active user.
Photon Load Test #1
- 1. Photon Load Simulation Christof Wegmann June, 2012
- 2. Traffic Simulation - Summary ? Scenario ¨C 25 rooms x 16 players = 400 CCU ¨C 2 x 50 bytes reliable / s, 10 x 50 bytes unreliable / s ? Server: Quad-Core, 8GB RAM, Win7 x64 ¨C In: 4,500 msg/s (1,2 MB/s) ¨C Out: 65,000 msg/s (7.5 MB/s) ¨C CPU: ~30% ¨C NIC (100Mbit): 80% saturated ¨C Client RTT: ~40ms
- 3. Cost Estimate ? Traffic (400CCU, per month) ¨C Traffic = 8MB/s * 60 * 60 * 24 * 30 * 50% = ~10 TB ? Cost ¨C Server Cost (HW, OS & traffic): $400 ¨C Cost per CCU ~= $400/400CCU = $1 ¨C 400 CCU ~= 4,000 DAU ~= 40,000 MAU ¨C Cost per MAU ~= 1 Cent