Compaq 108164-003 - ProLiant - 800 White Paper page 13

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This data perfectly illustrates the power of the L2 cache combined with the faster clock speed
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of the Pentium/133. After comparing the results shown in Figure 2 with those of Figure 3, it
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. . is clear that a single Pentium/133 easily outperforms two or four Pentium/100 CPUs.
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The server is less quick to consume processor resource. 800 users can easily be supported
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with subsecond response time.
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In this data there is not the huge jump in Score as exhibited by the Pentium/100. This is
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possibly because the L2 cache is not being overrun at these user loads.
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This example shows how there is little benefit in adding a CPU when the system is not
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. . processor constrained. Interestingly, there is no real apparent bottleneck in the server
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hardware itself. The gradual slowdown could be due to the Exchange software itself.
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This data implies that the system would be able to handle other tasks besides the email and
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public folder tasks in the LoadSim user profile. For example, the second CPU would likely be
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used more effectively if a gateway or some other Exchange process is added to the system.
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Four CPU data is omitted because it provides no additional benefit in this scenario.
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