Exchange Publishing - UAG Performance
Here are the details of a recent test cycle our performance lab conducted for publishing Exchange with Unified Access Gateway (UAG) RTM. It should be noted that all sorts of factors impact performance, such as usage profiles, published applications, hardware, etc. With Exchange, results are also impacted by the overall usage ratio between the different mail services, Outlook Web Access, Outlook Anywhere, and ActiveSync.
The details of the scenario are as follows:
Published Exchange Applications |
Authentication Details |
Ratio (of overall usage) |
Outlook Web Access |
Outlook Web Access Look and Feel with Basic authentication against the Client Access Server |
50% |
Outlook Anywhere and Web Services |
Clients authenticating with UAG with NTLM, and using KCD between UAG and the Client Access Server |
40% |
ActiveSync |
Basic authentication |
10% |
Results for a single test server running Forefront UAG (RTM build 1101):
Hardware: |
|
Processor |
2 Quad-Core Intel Xeon 5500 Series |
Memory |
24 GB RAM |
Network Interface |
Gigabit Ethernet |
Results: |
|
Number of concurrent users |
16,000 |
CPU utilization |
85% |
Memory usage |
44% |
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