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https://issues.apache.org/jira/browse/LOG4NET-500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15081874#comment-15081874
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Larry Aucoin commented on LOG4NET-500:
--------------------------------------
Absolutely. We have enterprise applications that generate 20MB files in just a
few seconds, so every single millisecond counts. In our testing, the old
version was taking an average of 33 ms to run through 5,000 trace lines, but
the new version is taking 55 ms. That's a significant increase in time and
prevents us from upgrading.
> 1.2.15 RollingFileAppender is 60% slower than 1.2.11
> ----------------------------------------------------
>
> Key: LOG4NET-500
> URL: https://issues.apache.org/jira/browse/LOG4NET-500
> Project: Log4net
> Issue Type: Improvement
> Components: Appenders
> Affects Versions: 1.2.15
> Environment: 4.5.2 .NET Framework
> Reporter: Larry Aucoin
>
> 1.2.15 RollingFileAppender is 60% slower than 1.2.11. I am using the
> following code and app.config file to test the 2 versions.
> APP.CONFIG
> ========================
> <?xml version="1.0" encoding="utf-8"?>
> <configuration>
> <configSections>
> <section name="log4net"
> type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
> </configSections>
> <log4net>
> <root>
> <level value="DEBUG" />
> <appender-ref ref="RollingFileAppender" />
> </root>
> <appender name="RollingFileAppender"
> type="log4net.Appender.RollingFileAppender, log4net">
> <file value="C:\TraceLogging\TraceLoggingTeset1.2.15.log" />
> <appendToFile value="true" />
> <rollingStyle value="Size" />
> <maxSizeRollBackups value="10" />
> <maximumFileSize value="20MB" />
> <staticLogFileName value="true" />
> <layout type="log4net.Layout.PatternLayout, log4net">
> <param name="ConversionPattern" value="%date [%thread] %-5level
> [%logger].%message%newline" />
> </layout>
> </appender>
> </log4net>
> <startup>
> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2"/>
> </startup>
> </configuration>
> ========================
> CODE:
> ========================
> using System;
> using System.Collections.Generic;
> using System.ComponentModel;
> using System.Data;
> using System.Drawing;
> using System.Linq;
> using System.Text;
> using System.Threading.Tasks;
> using System.Windows.Forms;
> using System.Diagnostics;
> using log4net.Core;
> namespace TraceLoggingTest
> {
> public partial class Form1 : Form
> {
> public log4net.ILog Logger;
> public Form1()
> {
> InitializeComponent();
> Logger = log4net.LogManager.GetLogger("Form1");
> log4net.Config.XmlConfigurator.Configure();
> }
> private void btnTest_Click(object sender, EventArgs e)
> {
>
> Logger.Debug("=====================================================");
> Stopwatch sw = new Stopwatch();
> sw.Start();
> for (int i = 0; i < 5000; i++)
> {
> Logger.Debug("Write item [" + i.ToString() + "]...");
> }
> sw.Stop();
> Logger.Debug("TOTAL TIME [" + sw.ElapsedMilliseconds.ToString() +
> "]");
> this.lblTime.Text = sw.ElapsedMilliseconds.ToString() + " ms";
>
> Logger.Debug("=====================================================");
> }
> }
> }
> ========================
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