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4. Raw I/O Variable-Size Optimization Patch

This section provides information on the raw I/O variable-size optimization patch for the Linux 2.4 kernel written by Badari Pulavarty. This patch is also known as the RAW VARY or PAGESIZE_io patch.

The raw I/O variable-size patch changes the block size used for raw I/O from hardsect_size (normally 512 bytes) to 4 kilobytes (K). The patch improves I/O throughput and CPU utilization by reducing the number of buffer heads needed for raw I/O operations.

4.1. Locating the Patch

You can download the patch from one of the following locations: