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PORedirectStandardOutput is buffering lines instead of being instantaneous?
 

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    <p>Ok, I am trying to use Tail to monitor a log file, but I cannot get the same behavior programatically as when I manually run it through cmd prompt using the same parameters.</p> <p>When run through cmd prompt it displays the new lines <strong>instantly</strong>. Programatically though, I have to wait for about <strong>75+ new lines</strong> in log file before the 'buffer' unleashes all the lines.</p> <p>Here's the code I have now.</p> <pre><code>private const string tailExecutable = @"C:\tail.exe"; private const string logFile = @"C:\test.log"; private static void ReadStdOut() { var psi = new ProcessStartInfo { FileName = tailExecutable, Arguments = String.Format("-f \"{0}\"", logFile), UseShellExecute = false, RedirectStandardOutput = true }; // Running same exe -args through cmd.exe // works perfectly, but not programmatically. Console.WriteLine("{0} {1}", psi.FileName, psi.Arguments); var tail = new Process(); tail.StartInfo = psi; tail.OutputDataReceived += tail_OutputDataReceived; tail.Start(); tail.BeginOutputReadLine(); } static void tail_OutputDataReceived(object sender, DataReceivedEventArgs e) { Console.WriteLine(e.Data); } </code></pre> <p>I have used the OutputDataReceived event before but never had these buffering/spamming problems. </p> <p>I am so confused with about right now.</p> <h2>* <strong>Edit</strong> *</h2> <p>I found <a href="http://www.codeproject.com/KB/cs/wintail.aspx" rel="nofollow noreferrer">this wintail project on CodeProject</a> and am going to be switching to that because the buffer makes this solution way too slow.</p> <p>Thanks for the answers.</p>
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