Relog.exe isn't some new fad amongst Bloggers - it's a tool from the Windows Resource Kit that helps you convert performance counter logs produced by Performance Monitor (perfmon.exe) into common text formats such as CSV. Earlier today I ran perfmon.exe and forgot to change the logging format from the default binary format to CSV. I searched the Web for a tool to convert to a format acceptable to LogParser and I found Relog. This utility saved me having to redo five hours of monitoring to get the data that I needed to analyse. Cheers to the Resource Kit team!
Syntax: relog input.blg -f CSV -o output.csv
Where can I get it? Download relog.exe for free from the Microsoft Download Center (requires a genuine Windows installation).