Hi Ceki I have tried using System.out.println() instead of logger.debug(). It is fast (less than a second).
Best regards, Peter Am 20.12.2011 um 18:50 schrieb ceki: > Hi Peter, > > If I understand correctly, you have shown that invoking System.out.println is > slow with javaw. Do you know why? > If the reason was known, for example it was due to exceptions being thrown, > ConsoleAppender could address that problem. > > Is it possible to check whether an app is running under javaw and not java? > ConsoleAppender could disable itself under javaw. > > -- > Ceki > http://twitter.com/#!/ceki > > On 20.12.2011 18:34, Peter Kullmann wrote: >> Hi, >> >> we had a problem with the performance of our application and it boiled down >> to very bad performance of the console appender when there is no console (in >> particular on windows xp). >> >> You can see the whole context of the issue here: >> http://www.eclipse.org/forums/index.php/m/768740/#msg_768740 >> >> Here's the conclusion and the code for my experiments: >> >> >> package testlogback; >> >> import java.io.FileWriter; >> import java.io.IOException; >> >> import org.slf4j.Logger; >> import org.slf4j.LoggerFactory; >> >> public class Main { >> public static void main(String[] args) throws IOException { >> Logger logger = LoggerFactory >> .getLogger("chapters.introduction.HelloWorld1"); >> long start = System.currentTimeMillis(); >> for (int i = 0; i< 10000; i++) { >> logger.debug("Hello world."); >> } >> long end = System.currentTimeMillis(); >> >> FileWriter fileWriter = new FileWriter("logbacktest.out"); >> fileWriter.write("Time: " + (end - start) + "\n"); >> fileWriter.close(); >> System.out.println("Time: " + (end - start)); >> } >> } >> >> >> On my windows box it prints out "Time: 140" when started as "java -jar >> testlogback.jar". If I start "javaw -jar testlogback.jar" it uses 100% CPU >> for about 20 seconds (for effectively doing nothing). This is the case for >> Sun ire 6 and 7 on windows xp. >> >> On windows 7 the situation is better: javaw uses only about 7 seconds (which >> is still too much, I guess). >> >> Best regards, >> Peter >> > _______________________________________________ > Logback-user mailing list > [email protected] > http://mailman.qos.ch/mailman/listinfo/logback-user > _______________________________________________ Logback-user mailing list [email protected] http://mailman.qos.ch/mailman/listinfo/logback-user
