Do you know if it's possible to run YourKit under NetBeans? I can try it if I can do that. I'm having all kinds of other issues right now trying to run my application outside of NetBeans. I'm using Apache FOP and there are issues with the module architecture of Java 9+ and the jar files needed by Apache FOP. Problems with module descriptors and exceptions related to export of classes. Some of it is interactions with classes used by log4j. Until I can figure out how to resolve these problems I can only run under NetBeans. Not sure what NetBeans is doing that allows it to run.
Lisa On 11/18/2020 7:49 AM, Ralph Goers wrote: > Is there any chance you could run your application under YourKit and profile > startup? > > Your partner uses %L so each log event needs to locate the location of the > caller. In Java 8 that used the com.sun.Reflection class but that was removed > in Java 9 so in Java 11 it would be using java.util.StackWalker. I suspect > the majority of the time will be there. I have made several attempts to make > that faster but haven’t seemed to find something that works for everybody. So > providing a profiling snapshot would help enormously. > > FWIW, Logging to the Console is known to be very slow, but I don’t believe it > should have changed that much between Java 8 and 11. > > Ralph > >> On Nov 17, 2020, at 11:11 PM, Lisa Ruby <lbru...@protonmail.com.INVALID> >> wrote: >> >> I am working on moving my Java application development from Java 8 and >> JavaFX 8 to Java 11 and JavaFX 11, and am seeing a large performance >> degradation in log4j between Java 8 and Java 11. >> >> I've found these two issues that appear to have been addressed. Assuming >> whatever changes/fixes were involved got included in the latest >> releases, they have not fixed the issue I am seeing. >> >> https://github.com/line/armeria/issues/2306 >> https://issues.apache.org/jira/browse/LOG4J2-2537 >> >> For Java 11 I am using AdoptOpenJDK version 11.0.2, OpenJFX version >> 11.0.2, log4j version 2.14.0 (also tried 2.13.3, and 2.12.1), and >> NetBeans 12.0. In my Java 8 implementation I'm using log4j 2.12.1. I can >> supply JDK version if needed. >> >> Below is a general representation of what my log4j xml config file looks >> like. It's the same for Java 8 as for Java 11. I have a Loggers entry >> for each class in my application. They are all specified the same as the >> one shown here. In each class file I have code that looks like this: >> >> private static final Logger logger = >> LogManager.getLogger(ClassName.class.getName()); >> >> XML File Sample >> >> <?xml version="1.0" encoding="UTF-8"?> >> <Configuration status="warn" monitorinterval="15"> >> <Appenders> >> <Console name="Console" target="SYSTEM_OUT"> >> <PatternLayout pattern="%d{ISO8601} [%t] %-5level %logger{36} - >> %L - %msg%n"/> >> </Console> >> <RollingFile name="RollingLogFile" fileName="logs/app.log" >> filePattern="logs/app-%i.log" > >> <PatternLayout> >> <pattern>%d{ISO8601}_%-5level_[%replace{%t}{stateofmyestate\.}{}]_%replace{%logger{36}}{stateofmyestate\.}{}_%L_%msg%n%ex</pattern> >> </PatternLayout> >> <Policies> >> <SizeBasedTriggeringPolicy size="5 MB" /> >> </Policies> >> <DefaultRolloverStrategy max="5"/> >> </RollingFile> >> </Appenders> >> <Loggers> >> <Logger name = "appname.classname" level = "trace" >> additivity="false"> >> <AppenderRef ref="RollingLogFile"/> >> <AppenderRef ref="Console"/> >> </Logger> >> <Root level="trace"> >> <AppenderRef ref="Console"/> >> </Root> >> </Loggers> >> </Configuration> >> >> I have a lot of log messages, many of which are logged as the >> application is starting. When using Java 11 the logging is causing my >> application to take at least 6 times longer to start than with Java 8. >> With Java 8 it takes between 3 and 4 seconds. With Java 11 it takes 25 >> seconds. I have some other functionality that also does a lot of logging >> when the log level is set to trace, and in that case the performance >> goes from seconds in Java 8 to several minutes in Java 11. >> >> I've tried various things to troubleshoot, and it appears to be >> something related to Console logging that is causing the performance >> issue. If I remove the Console Appenders from my configuration and leave >> only the RollingFile Appenders, the problem goes away. If I do the >> opposite and remove the RollingFile Appenders and leave the Console >> Appenders, I see a tiny improvement in the performance, but it's still >> way worse than in Java 8. So far I'm testing by running the application >> through NetBeans. I haven't tried starting the application from a >> Windows Command window yet. Running into some other issues doing that. >> >> Can anyone help me figure out if this is a log4j issue, or if there is >> something I can change in how I'm using log4j with Java 11, so I can >> resolve this issue? >> >> Thank you. >> >> Lisa Ruby >> >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org >> For additional commands, e-mail: log4j-user-h...@logging.apache.org >> >> > --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
