Uploaded image for project: 'Log4net'
  1. Log4net
  2. LOG4NET-421

Inclusion of UserName in composite properties dictionary has a significant performance impact

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: 1.2.13
    • Fix Version/s: None
    • Component/s: Core
    • Labels:
    • Environment:
      Issue was observed on Windows Server 2008 R2 with an ASP.NET 4.0 application.

      Description

      A change made for LOG4NET-205 has the LoggingEvent.CreateCompositeProperties method get the UserName property for every log event. Since getting the UserName is very slow, this change has a significant impact on performance in log4net.

      In one trace captured with dotTrace on a large web application we found that the get UserName property (called from CreateCompositeProperties) accounted for 34% of all time spent in log4net code.

      Our workaround for the issue has been to "fix" the UserName property by adding <fix value="32" /> to all our appenders.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                nachbarslumpi Dominik Psenner
                Reporter:
                tvoros Tom Voros
              • Votes:
                0 Vote for this issue
                Watchers:
                0 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: