Dell PowerEdge R820 - Manual (Page 18)

Consolidating Oracle Databases on the Dell PowerEdge R820 Server Using Oracle VM
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Performance of 70% of R820 vs 2 x 2950 = ~4X
Supported Userload comparison of legacy vs R820
Figure 12.
Max userload supported by R820 at 70% utilization = 20800
Max userload supported by legacy Production system (2 x 2950) = 4800
Percentage gain = ~316%
Performance of 70% of R820 vs 2 x 2950 = ~4X
Based on the above figures, it is evident that both in terms of maximum TPS and userload supported
R820 is delivering 4X performance when compared to legacy Production Oracle RAC.
CPU utilization comparison of legacy vs R820
Figure 13.
0
5000
10000
15000
20000
25000
2 x 2950 R820
R820 vs legacy saturated Userload
Userload
0
20
40
60
80
100
average user
time
average
system time
average idle
time
average iowait
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CPU Utilization @ legacy saturated
Userload
R820
2 x 2950