Problem: Continue to have slow server response or internal server error, timeouts with reindexing 1.47 million skus. Most indicies don't finish, or update the last run information. Even after the reindex finishes, "Reindex required" still shows. Need to update a subsection of products every 10-30 days manually.
Need a solution to reindex the catalog without slowing now the site dramatically.
Experience working with large numbers of skus and Magento Community Edition 1.5.