Compaq ProLiant 1000 Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 13

processor constrained. Interestingly, there is no real apparent bottleneck in the server

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444A/0696 WHITE PAPER (cont.) 1...3 This data perfectly illustrates the power of the L2 cache combined with the faster clock speed of the Pentium/133. After comparing the results shown in Figure2 with those of Figure3, it is clear that a single Pentium/133 easily outperforms two or four Pentium/100 CPUs. The server is less quick to consume processor resource. 800 users can easily be supported with subsecond response time. In this data there is not the huge jump in Score as exhibited by the Pentium/100. This is possibly because the L2 cache is not being overrun at these user loads. This example shows how there is little benefit in adding a CPU when the system insot processor constrained. Interestingly, there is no real apparent bottleneck in the server hardware itself. The gradual slowdown could be due to the Exchange software itself. This data implies that the system would be able to handle other tasks besides the email and public folder tasks in theLoadSim user profile. For example, the second CPU would likely be used more effectively if a gateway or some other Exchange process is added to the system. Four CPU data is omitted because it provides no additional benefit in this scenario.

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•
This data perfectly illustrates the power of the L2 cache combined with the faster clock speed
of the Pentium/133. After comparing the results shown in Figure
2 with those of Figure3, it
is clear that a single Pentium/133 easily outperforms two or four Pentium/100 CPUs.
•
The server is less quick to consume processor resource. 800 users can easily be supported
with subsecond response time.
•
In this data there is not the huge jump in Score as exhibited by the Pentium/100. This is
possibly because the L2 cache is not being overrun at these user loads.
•
This example shows how there is little benefit in adding a CPU when the system is
not
processor constrained. Interestingly, there is no real apparent bottleneck in the server
hardware itself. The gradual slowdown could be due to the Exchange software itself.
•
This data implies that the system would be able to handle other tasks besides the email and
public folder tasks in theLoadSim user profile. For example, the second CPU would likely be
used more effectively if a gateway or some other Exchange process is added to the system.
•
Four CPU data is omitted because it provides no additional benefit in this scenario.