Wikipedia
This workload is based on the popular on-line encyclopedia. Since the website’s underlying software, MediaWiki, is open-source, we are able to use the real schema, transactions, and queries as used in the live website. This benchmark’s workload is derived from (1) data dumps, (2) statistical information on the read/write ratios, and (3) front-end access patterns [38] and several personal email communications with the Wikipedia administrators. Although the total size of the Wikipedia database exceeds 4TB, a significant portion of it is historical or archival data (e.g., every article revision is stored in the database). Thus, the working set size at any time is much smaller than the overall data.
