As per the documentation:
server.undertow.threads.io //Number of I/O threads to create for the worker. The default is derived from the number of available processors.
server.undertow.threads.worker //Number of worker threads. The default is 8 times the number of I/O threads.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…