Niall,
Why do you generate an exception to get the stack trace? You can generate
the stack trace much faster without the exception, either for the current
thread or (if needed) the calling thread.
David
Niall Daley
<[EMAIL PROTECTED]
> To
Log4NET User
07/14/2005 03:45 <[email protected]>
PM cc
Subject
Please respond to Re: Using %C, %F, %l, %L and %M in
"Log4NET User" ConversionPattern
<[EMAIL PROTECTED]
ging.apache.org>
Leo,
In order to generate the method name log4net has to throw an
exception and check the stack trace so, yes, it is very much slower than
not doing so. As a rough guide line, on my machine it takes approximately
0.5 seconds to log 10000 messages with out %M and 6.4 seconds with it in
the pattern. If you really want to use this you should evaluate the
performance penalty in your own environment however.
Niall
On Thu, 14 Jul 2005, Hart, Leo wrote:
> Hello,
>
> I'm interested in added method name data in my logging messages, so I've
> set up my RollingFileAppender like this:
>
> <appender name="File - Support"
> type="log4net.Appender.RollingFileAppender">
> <param name="File"
> value="c:\\LogFiles\\ReferenceApp\\ReferenceApp" />
> <param name="AppendToFile" value="true" />
> <param name="DatePattern" value=" - yyyy-MM-dd.'log'" />
> <param name="RollingStyle" value="Date" />
> <param name="StaticLogFileName" value="false" />
> <layout type="log4net.Layout.PatternLayout">
> <param name="ConversionPattern" value="%-5p | %d{yyyy-MM-dd
> HH:mm:ss, fff} | %t | %c | %M | %t | %m%n" />
> </layout>
> </appender>
>
> %M tells Log4Net to output the name of the method within which the
> logging statement was generated.
>
> Now, I have Ceki Culcu's book for log4j (I was a Java developer in a
> previous life). Within that he states:
>
> On certain platforms, generating the caller class information
> can be excruciatingly slow. Thus, the user of the C, F, l, L, and M
> conversion characters should be avoided unless execution speed is not an
> issue.
>
> My question is, given that I'm using Log4Net (1.2.8b) and not Log4J and
> my platform is .NET 1.1, is this statement still true? And if so, does
> anyone have any benchmarks indicating how much of a performance penalty
> will be taken for using the %M character?
>
> Thanks,
> Leo Hart
>
--
Niall Daley
Log4net Dev
