SQL Replication tuning

You can improve the performance of your SQL Replication environment by tuning replication to maximize throughput and minimize CPU usage, and measuring replication performance.

Introduction
SQL Replication consists of the Capture program, the Apply program, the Replication Alert Monitor, Replication Center, the ASNCLP command-line program, and System i system commands.
General tuning advice
You can begin optimizing your SQL Replication environment by increasing the performance of your database. After tuning the database, you can tune your replication objects for the best performance.
Tuning replication to maximize throughput
To maximize replication throughput, changes must be written to and then fetched from the changed-data (CD) tables quickly and as often as possible.
Tuning replication to minimize CPU usage
SQL Replication must perform certain tasks to minimize CPU usage for replication.
Measuring replication performance
Use the Replication Center to monitor your replication environment and determine how the performance-tuning changes that you make affect your replication environment.