加载大型CSV文件时的性能问题（Objective-C）

I have a CSV file that contains over 80,000 rows and 100 columns. I'm trying to handle loading /accessing the CSV data in the most performance-efficient way possible. Right now my CSVParser loads the data into an NSArray, but it's extremely slow/sluggish; this is a problem as I hope to handle this parsing/loading on a mobile device: the iPhone.I have a CSV file that contains over 80,000 row