Since I upgraded our Threads from 6.3.2 to 6.4.1, it has been painfully slow. Initially we were consistently seeing sub-second query times, but as the user load escalates (around 150 users on up), it is just dead - 40 seconds to generate the main page (56 queries). We see 25-40 secs to generate pages with <10queries. And some times, we see sub-second response.
I have optimized tables, tweaked my.cnf to maximize use of our 1GB of RAM. No other changes were made to the server since the upgrade, and the server load has been consistent since prior to the upgrade.
I would appreciate any other suggestions.
