ePrism User Guide - EdgeWave

APPENDIX E
Performance Tuning
There are several factors that can affect the performance of your ePrism system:
• Network bandwidth
• Number of allowed SMTP connections
• Usage of background processes such as Reporting and ePrism Mail Client
• Internet unpredictability: Mail can often arrive in bursts of activity, with only a few messages
arriving one minute, and several hundred the next. In the event of a network outage, such as a
failed router, the amount of queued mail that arrives after the router is back online can be very
large.
• Internet performance: SMTP clients can be very slow at connecting, and the connection may
be disconnected before it is complete.
• The time to process a message is also affected by the size of the email and its attachments.
• Amount of system resources (Processing power, RAM, and disk space)
These factors must be carefully considered when tuning a system for optimal performance. If an
ePrism system is optimized for throughput to handle high mail loads, other aspects of the system
may suffer from increased latency issues, such as reporting, WebMail/ePrism Mail Client access,
and the possibility of dropped connections by clients who cannot connect to a busy system.
Similarly, allocating too many resources to resolve latency issues will affect mail throughput
performance.
Caution! Modifying certain parameters may affect the performance of other aspects of the
system, and it is recommended that you only change these settings to resolve specific
performance issues with guidance from St. Bernard Technical Support. Do NOT
experiment with these settings, as you may render your system unusable.
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