[英]How to write GC log to named pipe in Java 9?
Before Java9, we can just specify -Xloggc:/my/named/pipe to log garbage collection messages into a named pipe . 在Java9之前,我们可以指定-Xloggc:/ my / named / pipe将垃圾收集消息记录到命名管道中 。 However, when specifying
-Xlog:gc*:file=/my/named/pipe
, JVM 9 complains about the named pipe: 但是,当指定
-Xlog:gc*:file=/my/named/pipe
,JVM 9会抱怨命名管道:
[0.003s][error][logging] Unable to log to file /my/named/pipe, /my/named/pipe is not a regular file.
We are using Linux RedHat with jdk_9.0.1_x64. 我们正在使用Linux RedHat和jdk_9.0.1_x64。
How can we log GC messages to a named pipe in Java 9? 我们如何在Java 9中将GC消息记录到命名管道?
Looking at the syntax specified under Unified JVM Logging , could you try replacing the arg from 查看Unified JVM Logging下指定的语法,您可以尝试替换arg
-xlog:gc*.file=/my/named/pip
to 至
-Xlog:gc*=info:file=gctrace.txt
^ ^ ^
level colon filename
or simply 或者干脆
-Xlog:gc*:file=gctrace.txt // since default level for gc logging is INFO
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