So, as of last Sunday all java servers in my park started running at 100% CPU capacity. Turns out there’s a leap second bug in current java releases on Linux servers. I found this post where a temporary workaround/fix is provided.
Some users have this (nasty) habit of staying logged into their shells. Not just one, but A LOT of them, very annoying to see all those idle connections (IMHO). So to prevent these idle connections from staying open until the end of days is to set a simple environment variable called “TMOUT”.