I spent some time this weekend following up on why this the KW Hackers GNU Social instance was so slow. I made several tweaks which I found around the Internet. I'll start from biggest impact to lowest impact. 0) Enable php5-fpm's "slow log" in `/etc/php5/fpm/pool.d/www.conf`. This lets one see exactly which scripts are taking a long time to execute. In my case, it was the OStatus GNU S…