I'm having an issue with a Subversion server and can't seem to find Subversion's log files. Specifically, I'm looking for any logfiles that Subversion creates to handle its own internal issues, as opposed to the log messages that a user would create when checking in code. I've tried the official SVN documentation, and I've googled until my fingers bleed, but there's so much documentation on SVN checkin logs that anything on Subversion's internal logging is lost in the shuffle.
The system is Red Hat Linux 4.1.2 with Subversion version 1.5.1.