官方权威指南：https://www.oracle.com/cn/technical-resources/articles/java/g1gc.html[……]
G1垃圾回收器推荐调优参数
Leave a reply
Category Archives: Java && J2EE
分布式锁的开源实现Shedlock
log4j不打印log解决方案
log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
解决方法：src/main/resources下添加log4j.properties
# Set root logger level to DEBUG and its o[……]
Spring Boot + WebSocket example without STOMP and SockJs
https://www.devglan.com/spring-boot/spring-websocket-integration-example-without-stomp
Java堆外内存排查
1 查看内存占用
# pid
pmap -x pid | sort -n -k3
# memory
—————- ——- ——- ——-
00000007c1324000 1028976 0 0 —– [ anon ]
00007f09d9a0a000 12 0 0 —– [ anon ]
00007f09da212000 12 0[……]