我在我的代碼中設置了一些stop watch來測量一些代碼塊,所有的消息都進入我的主日誌而不是進入定時日誌。 perfStats.log文件被創建得很好,但是所有的消息都轉到根日誌中,根據我讀過的文檔,我認爲這根本不應該發生。有什麼明顯的我在這裏失蹤?Perf4j Not Logging Correctly
的Perf4教程link
實施例代碼
import org.apache.log4j.Logger;
import org.perf4j.LoggingStopWatch;
import org.perf4j.StopWatch;
public class PerfLogger {
/**
* @param args
*/
public static void main(String[] args)
{
Logger logger = Logger.getLogger(PerfLogger.class.getName());
logger.info("Starting perf log test");
StopWatch stopWatch = new LoggingStopWatch("test time");
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
stopWatch.stop();
}
}
實施例的log4j.xml
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
<appender name="STDOUT-DEBUG" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p [%t]%x %M (%F:%L) - %m%n"/>
</layout>
</appender>
<!-- Perf4J appenders -->
<!--
This AsyncCoalescingStatisticsAppender groups StopWatch log messages
into GroupedTimingStatistics messages which it sends on the
file appender defined below
-->
<appender name="CoalescingStatistics"
class="org.perf4j.log4j.AsyncCoalescingStatisticsAppender">
<!--
The TimeSlice option is used to determine the time window for which
all received StopWatch logs are aggregated to create a single
GroupedTimingStatistics log. Here we set it to 10 seconds, overriding
the default of 30000 ms
-->
<param name="TimeSlice" value="10000"/>
<appender-ref ref="fileAppender"/>
</appender>
<!-- This file appender is used to output aggregated performance statistics -->
<appender name="fileAppender" class="org.apache.log4j.FileAppender">
<param name="File" value="perfStats.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%m%n"/>
</layout>
</appender>
<!-- Loggers -->
<!--
The Perf4J logger. Note that org.perf4j.TimingLogger is the value of the
org.perf4j.StopWatch.DEFAULT_LOGGER_NAME constant. Also, note that
additivity is set to false, which is usually what is desired - this means
that timing statements will only be sent to this logger and NOT to
upstream loggers.
-->
<logger name="org.perf4j.TimingLogger" additivity="false">
<level value="INFO"/>
<appender-ref ref="CoalescingStatistics"/>
</logger>
<root>
<priority value="info"/>
<appender-ref ref="STDOUT-DEBUG"/>
</root>
</log4j:configuration>
您肯定需要使用Log4JStopWatch,並且您需要手動調用start(),雖然示例中顯示了其他情況。但是我注意到,當你的時間測量值大於你指定的時間片時,即你進行了5分鐘的測量,並且定義了10秒的時間片,那麼測量就不會記錄到日誌中。 – jtruelove 2010-04-20 14:51:51