>>>>
As an aside, make sure you have all log4j Logger#debug statements
enclosed in if(logger.isDebugEnabled()) { ... } clauses -- that's an
order of magnitude or so runtime performance improvement.
>>>>

Showing my C heritage here, but can't you do something like

Log("an error has occurred");

And in Log have a directive like

class Logger()
{
  void Log(string msg)
  {
#ifdef DEBUG
    ... log message ..
#endif
};

And so you can compile a version with debug or no debug. Those if()
statements are still going to take time to process, even if there is no
logging going on.

G.


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