Test method
April 2, 2024
ID 204629
The test was conducted with the involvement of a specialized script that created a complex load on the tested system in the form of a set of parallel SMTP and MAPI sessions that simulated the behavior of customers of the organization. Incoming, Outgoing, and Internal mail traffic was emulated with a specially prepared collection that imitated real mail based on the ratio of Clean/Spam/Phishing/Viruses indicated below.
Ratio of messages in mail traffic:
- 13% spam
- 7% phishing
- 7% virus infected
- 73% clean messages
Size of messages:
- 1% 1-2 MB
- 2% 0.5-1 MB
- 6% 100-500 KB
- 90% 10-100 KB
The number of simultaneous sessions for load emulation was chosen based on the maximum load that the test stands could handle.
The load was created locally on each server using a special test utility that generated streams of outgoing / incoming / internal mail.
To assess ODS (on-demand scanning) of mailboxes, mailboxes were pre-filled with unscanned messages. Measurements were conducted without generating a system load in the form of active sessions, but with only a background scan of mailboxes.
Before beginning tests, the Anti-Virus and Anti-Spam databases received the latest updates. Database update was disabled during testing.
System performance was assessed based on the following performance counters:
Performance counters
Counter name: | Brief description |
MSExchangeTransport Queues(_total)\Messages Completed Delivery Per Second (MPS) | Number of messages (end to end) delivered to mailboxes of users |
MSExchangeTransport Queues(_total)\Active Mailbox Delivery Queue Length | Size of the Microsoft Exchange message delivery queue |
Processor Information(_Total)\% Processor Time | Total load on the processor |
Processor Information(Kavscmesrv) \% Process Time | Processor load generated by Kaspersky Security |
KSE Anti-Virus (Mailbox)\Antivirus scans per second | Number of Anti-Virus scans per second as counted by Kaspersky Security (for mailboxes) |
KSE Anti-Virus (Transport)\Antivirus scans per second | Number of Anti-Virus scans per second as counted by Kaspersky Security (for the transport role) |
KSE Anti-Spam (Transport)\Antispam scans per second | Number of Anti-Spam scans per second as counted by Kaspersky Security (for the transport role) |
Memory\Committed Bytes in Use | Percentage of allocated memory usage |
Readings were taken from performance counters once every 10 seconds locally for each server.
The average values from counter readings were indicated.
