Confused: want low latency: do I need BOTH async logger AND async appender??

[SMITH, CURTIS]

http://logging.apache.org/log4j/2.x/manual/async.html

This URL describes that v2 has both async logger and async appender.   What is 
the suggested config for an embedded situation where I want low latency, 
nothing fancy?

I've had do this in code since we don't own the cmd line:  OSGi and system 
vendor owns the box and java command line.

System.setProperty("AsyncLoggerContextSelector", 
"org.apache.logging.log4j.core.async.AsyncLoggerContextSelector");
System.setProperty("AsyncLogger.RingBufferSize", "128");        // min size 
permissable to keep memory low
System.setProperty("AsyncLogger.WaitStrategy", "Block");        // less CPU, 
better for embedded env
System.setProperty("log4j2.disable.jmx", "true");               // saves on a 
jmx jar and we don't use JMX anyway

Tnx curt

Curt Smith
AT&T Digital Life
DLC Software Development
404-499-7013
(cell) 678-365-6508