Thank you very much guys.
On Mon, Oct 19, 2015 at 9:36 PM, Remko Popma <[email protected]> wrote:
> Agreed: if you
> use
> -DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
> then *all* loggers will be async.
>
> If you do not use the -DLog4jContextSelector=... system property then only
> loggers configured with <AsyncRoot> or <AsyncLogger> will be async and
> the loggers configured as <Logger> will be synchronous.
>
> In your example:
> <Loggers>
> <logger name="Class_A" level="info" additivity="false"><AppenderRef
> ref="A" /></Logger>
> <AsyncRoot level="info><AppenderRef ref="A" /></AsyncRoot>
> </Loggers>
>
> LogManager.getLogger("Class_A").info("some message"); // this is logged
> synchronously
>
> If additivity=true, the event will be processed both by the root logger
> (asynchronously) and by the Class_A logger (synchronously).
>
> Remko
>
>
> On Mon, Oct 19, 2015 at 7:01 PM, 流子℡ <[email protected]> wrote:
>
> > if you set -DAsyncLoggerContextSelector ,all the asyncRoot node should be
> > changed to Root, because needn't.
> > the difference is set DAsyncLoggerContextSelector make all the logger
> > async,however. asyncRoot only make async inclued in the node.
> >
> >
> >
> >
> > ------------------ 原始邮件 ------------------
> > 发件人: "Strong Su";<[email protected]>;
> > 发送时间: 2015年10月19日(星期一) 下午5:57
> > 收件人: "Log4J Users List"<[email protected]>;
> >
> > 主题: Difference between <asyncRoot> and -DAsyncLoggerContextSelector
> >
> >
> >
> > Hello everyone,
> >
> > I'm not pretty sure about the difference <asyncRoot>
> > and -DAsyncLoggerContextSelector.
> > Here is a small slice example of log4j2.xml:
> >
> > <Loggers>
> > <logger name="Class_A" level="info" additivity="false"/>
> > <root level="info/>
> > </Loggers>
> >
> > When I set -DAsyncLoggerContextSelector, and both Class_A's logs and
> other
> > logs(like Class_B) should be async because the JAVA_OPTS makes all
> loggers
> > async..
> > But if I do not set -DAsyncLoggerContextSelector and change root to
> > asyncroot.
> > Should logs from Class_A be async or sync?
> > And what will happen if I remove additivity="false"?
> >
> > Thank you.
> > Best Regards,
> > Dylan Su
> >
>
