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  1. Log4net
  2. LOG4NET-421

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

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • 1.2.13
    • None
    • Core
    • 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.

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        Issue Links

          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. LOG4NET-429 Pattern with Context property causes severe slowdown

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Reopened
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LOG4NET-454 Intermittent severe slowdown with RollingFileAppender+MinimalLock

          • Major - Major loss of function.
          • Open

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            People

              nachbarslumpi Dominik Psenner
              tvoros Tom Voros
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              Dates

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                Updated:
                Resolved: