IBM has tested the latest Linux kernel on a four-way Netfinity 7000 server, running Zeus Web server software.
The speed increase has been attributed to release 2.4's capacity for symmetric multi-processing.
Neil Macehiter, technology evangelist for Zeus commented "We are very pleased with the performance gains in standard version of the software with just a kernel change."
Zeus plans to release a version of its Web server software, optimised for the latest version of Linux, which will run even faster.
Zeus runs on more than 700,000 servers world-wide and is used by UK Websites such as those run by Ebay.co.uk, Interflora and Cable & Wireless.