Compaq ProLiant 1000 Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 11

Pentium/100 - proliant 3000 server

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444A/0696 WHITE PAPER (cont.) 1...1 Pentium/100 PENTIUM/100 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 4500 Processor Subsystem 1,2,4 Pentium/100, 512 KByte L2 cache System Memory 128 Mbytes Disk Subsystem Integrated Fast Wide SCSI-2 controller Pagefile and executables volum:e1x2GB Fast Wide SCSI2 drive EISA SMART Controller Log volume: 2x2GB Fast SCSI-2 drives on port 0, RAID 1 (Array Accelerator enabled) IS volume: 7x2GB Fast SCSI-2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 (10BaseT) Operating System Windows NT Server v3.51 + SP4 Table 4. Pentium/100 Exchange Server hardware configuration LoadSim Score vs. # Users ProLiant 4500, Pentium/100 - 512KB L2 3000 (lower score is better) 2500 Score 2000 1P 1500 2P 4P 1000 500 0 300 500 600 800 1000 1200 Number of Users Figure 2. Relative Score performance of Pentium/100 • The server very quickly consumes processor resource with a single CPU. Only 500 users can be supported withsubsecond response time. • In the single CPU data there is a huge jump in Score above 500 users. The trend carries over to the 2P and 4P data as well. This could be due to the L2 cache getting overrun at those numbers of users. • This is a good example of showing the benefit of a second CPU because Exchange is becoming processor constrained after 600 users.

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W
HITE
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APER
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Pentium/100
P
ENTIUM
/100 E
XCHANGE
S
ERVER HARDWARE CONFIGURATION
Machine Class
Compaq ProLiant 4500
Processor Subsystem
1,2,4 Pentium/100, 512 KByte L2 cache
System Memory
128 Mbytes
Disk Subsystem
Integrated Fast Wide SCSI-2 controller
Pagefile and executables volume
: 1x2GB Fast Wide SCSI-
2 drive
EISA SMART Controller
Log volume
: 2x2GB Fast SCSI-2 drives on port 0, RAID 1
(Array Accelerator enabled)
IS volume
: 7x2GB Fast SCSI-2 drives on port 1, RAID 5
(Array Accelerator enabled)
Network Interface
Compaq NetFlex/3 (10BaseT)
Operating System
Windows NT Server v3.51 + SP4
Table 4. Pentium/100 Exchange Server hardware configuration
LoadSim Score vs. # Users
ProLiant 4500, Pentium/100 - 512KB L2
(lower score is better)
0
500
1000
1500
2000
2500
3000
300
500
600
800
1000
1200
Number of Users
Score
1P
2P
4P
Figure 2. Relative Score performance of Pentium/100
•
The server very quickly consumes processor resource with a single CPU. Only 500 users can
be supported withsubsecond response time.
•
In the single CPU data there is a huge jump in Score above 500 users. The trend carries over
to the 2P and 4P data as well. This could be due to the L2 cache getting overrun at those
numbers of users.
•
This is a good example of showing the benefit of a second CPU because Exchange is
becoming processor constrained after 600 users.