We're running MySQL version 5.1.73.
We're having a recurring issue where our database server is being overloaded. Currently, we're monitoring about 1.18 MB/s of incoming traffic, with 200 queries per second on a server supporting roughly 25 WordPress-based sites. In the attached log file, we've noticed lines including things like:
3 Query	SELECT ID, post_name, post_parent, post_type
WHERE post_name IN ('buy-cialis-jellya-online')
AND post_type IN ('page','attachment')
3 Query	SELECT wp_term_taxonomy.term_id
INNER JOIN wp_terms USING (term_id)
WHERE taxonomy = 'category'
AND wp_terms.slug IN ('buy-cialis-jellya-online')
Any help figuring out what this means and if it's correlated, we would appreciate it.