Log4net is using whatever defaults the FileStream has for efficient IO. Do you
know what FileStream settings will make your writes faster? If so, you can just
pass those in yourself:
// untested
public class MyRollingFileAppender : RollingFileAppender
{
private int fileStreamBufferSize = 128; // ???
public override void ActivateOptions()
{
base.ActivateOptions();
Writer = new StreamWriter(new FileStream(
File,
FileMode.Append,
FileSystemRights.FullControl,
FileShare.ReadWrite, FileStreamBufferSize,
FileOptions.WriteThrough),
Encoding.Default,
FileStreamBufferSize);
}
public int FileStreamBufferSize
{
get { return fileStreamBufferSize; }
set { fileStreamBufferSize = value; }
}
}
Have you tried setting TextWriterAppender.ImmediateFlush? Can you use another
appender like the MemoryAppender or a code profiler?
----- Original Message ----
From: NeerajG <[email protected]>
To: [email protected]
Sent: Monday, February 2, 2009 10:24:02 PM
Subject: log4net slowness
I have an app which uses log4net currently set to DEBUG level. I use
RollingFileAppender in our application. I have noticed that log4net flushes
like in 15-16 ms interval. Has anyone seen this before? Is this something
which is documented? Is there a way that we could reduce that? I want to
measure some other performance numbers and in this setting which seems to be
dumping every 15 ms its tough to measure performance.
Any suggestions are welcome.
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