At this time the <maxcache> was at the default (1000). We will make it 250 an re-run the tests.
We are trying to upgrade the driver as per your suggestion. Do we need to recompile James after we download JConnector 3.0.9. Or would putting the jar file in the classpath work?
Thank you Sudip
> We performed stress testing on James using postal for around 4000 > messages/min. After 1hr and 15 mins, we got > java.sql.SQLException: Communication link failure: java.net.Socket > Exception.
What is the value for <maxcache> in config.xml for the JDBCSpoolRepository? If I recall correctly, it defaults to 1000. I found that 250 worked better under high load, although that likely will vary with available CPU.
> We are using James 2.2.08a and mySQL 4.0.13 with the 2.0.14 JDBC driver.
If you are going to use MySQL v4, you must keep up to date. MySQL v4 is still actively developed, and each new release is fixing dozens of bugs. You might also try switching to Connector/J v3.0.9.
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