code/Debug/Model/Logging.php
public function startRequest()
    {
        foreach ($this->files as $logFile) {
            $logFilePath = $this->getLogFilePath($logFile);
            $this->ranges[$logFile] = array(
                'start' => $this->getLastFilePosition($logFilePath),
                'end'   => 0
            );
        }
    }
public function startRequest()
    {
        foreach ($this->files as $logFile) {
            $logFilePath = $this->getLogFilePath($logFile);
            $this->ranges[$logFile] = array(
                'start' => $this->getLastFilePosition($logFilePath),
                'end'   => 0
            );
        }
    }
Initiates start range for all registered files