Dell POWEREDGE R720 - Manual (Page 6)

Consolidating Legacy OLTP Application Servers with the Dell 12 th Generation PowerEdge R720
Server
6
Test Results
Latency
Average Query Response Time (AQRT) is the time it takes for SQL Server to respond to the
query. This metric establishes the performance criteria for our Service Level Agreement (SLA)
of 2 seconds. At 14,750 concurrent users, the legacy environment met our maximum SLA of 2
seconds AQRT, while the R720 has an AQRT of just 508 milliseconds at the same user load. To
put this into perspective, the R720 is able to respond to the same query nearly 4 times faster
than the legacy environment. Figure 2 shows the AQRTs recorded during the tests.
Figure 3. Database Latency
System Performance - CPU Utilization
Figure 4 shows the CPU utilization on both solutions while simulating 14,750 concurrent users.
The R720 reached a maximum of 2.6 % CPU Utilization compared to the legacy environment, in
which 26.5% CPU was utilized.
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Average query response time at 14,750 concurrent users
R720 PE2950
Maximum SLA 2 Secs.