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List:       log4net-dev
Subject:    [jira] [Created] (LOG4NET-429) Pattern with Context property causes severe slowdown
From:       Jonas_Versén_(JIRA) <jira () apache ! org>
Date:       2014-03-25 7:18:42
Message-ID: JIRA.12703405.1395731859187.137925.1395731922480 () arcas
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Jonas Vers=C3=A9n created LOG4NET-429:
------------------------------------

             Summary: Pattern with Context property causes severe slowdown
                 Key: LOG4NET-429
                 URL: https://issues.apache.org/jira/browse/LOG4NET-429
             Project: Log4net
          Issue Type: Improvement
          Components: Appenders
    Affects Versions: 1.2.13
            Reporter: Jonas Vers=C3=A9n
            Priority: Minor


If you use a context property in your appenders pattern, there will be a si=
gnificant logging slowdown. In my experience anywhere from 3 to 5 times slo=
wer (this will depend on the appender).

I believe that as soon as you use a context property log4net will internall=
y access the windows user name even though it's not the property you want t=
o access. This theory comes from the fact that printing all properties in t=
he pattern (including the costly property username) compared to just printi=
ng one will slow down the logging with the same factor.

I've made a stackoverflow question with more details as well

http://stackoverflow.com/questions/22612286/using-log4net-context-propertie=
s-has-negative-impact-on-performance/



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