HP ProLiant DL288 HP Power Regulator for ProLiant servers - Page 7
DL385 G5 Power Savings and Performance Impact, Ultra Static Low vs. Static High, Power Savings
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Figure 3. Power savings and performance comparison of Static Low Power mode vs. Static High Performance mode on a DL385 G5 server configured with two AMD 2356 2.3 GHz processors Power Savings in Percent Perf Delta (Iterations/s) DL385 G5 Power Savings and Performance Impact Ultra Static Low vs. Static High % Load 0 10 20 30 40 50 60 70 80 90 100 30.00% 0.00% 25.00% -5.00% 20.00% 15.00% -10.00% -15.00% Pwr Saved Perf Delta 10.00% -20.00% 5.00% -25.00% 0.00% -30.00% Figures 4 and 5 represent the same power and performance results when Power Regulator is configured for Dynamic Power Savings mode. In Dynamic mode, processors are kept in the lowest (Pmin) P-state when utilization remains below 70 percent, providing the same power savings as in Static Low Power mode. At greater than 70 percent utilization, the Dynamic Power Savings mode begins to run the processors at the higher power level to maintain optimal system performance. 7
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