KAL is an Intel Pentium 4 clocked at 2.53 GHz running XP and Sun's JDK 1.4.1.

Results are in microseconds.


NullAppender:

  PatternLayout "%p - %m%n"
  PatternLayout "%-5p - %m%n"
  PatternLayout "%r [%t] %-5p %c{2} %x - %m%n"
  PatternLayout "%r [%t] %-5p %.10c %x - %m%n"
  PatternLayout "%r [%t] %-5p %.20c %x - %m%n"
  PatternLayout "%r [%t] %-5p %c - %m%n"
  PatternLayout "%d{ISO8601} [%t] %-5p %c %x - %m%n"
  PatternLayout "%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"
  PatternLayout "%l - %m%n"        
  PatternLayout "%C.%M.%L - %m%n"

FileAppender:

   PatternLayout "%p - %m%n"					   
   PatternLayout "%-5p - %m%n"					   
   PatternLayout "%r [%t] %-5p %c{2} %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.10c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.20c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %c - %m%n"				   
   PatternLayout "%d{ISO8601} [%t] %-5p %c %x - %m%n"		   
   PatternLayout "%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"
   PatternLayout "%l - %m%n"					   
   PatternLayout "%C.%M.%L - %m%n"                                     

FileAppender: (ImmediateFlush=false)

   PatternLayout "%p - %m%n"					   
   PatternLayout "%-5p - %m%n"					   
   PatternLayout "%r [%t] %-5p %c{2} %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.10c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.20c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %c - %m%n"				   
   PatternLayout "%d{ISO8601} [%t] %-5p %c %x - %m%n"		   
   PatternLayout "%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"
   PatternLayout "%l - %m%n"					   
   PatternLayout "%C.%M.%L - %m%n"                                     

FileAppender: (BufferedIO=true)

   PatternLayout "%p - %m%n"					   
   PatternLayout "%-5p - %m%n"					   
   PatternLayout "%r [%t] %-5p %c{2} %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.10c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %.20c %x - %m%n"			   
   PatternLayout "%r [%t] %-5p %c - %m%n"				   
   PatternLayout "%d{ISO8601} [%t] %-5p %c %x - %m%n"		   
   PatternLayout "%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"
   PatternLayout "%l - %m%n"					   
   PatternLayout "%C.%M.%L - %m%n"