I just received word from hosting provider (on a Shared Host account) that our processor usage was well outside of acceptable range, and it pointed to the index.php file in our Piwik install.
Didn’t know if anyone had encountered issues like this (I suspect it is related to the Live plugin refreshing constantly). If so, did you reach an effective resolution (other than turning off Live plugin)
Thanks for your thoughts / assistance.
— EDIT —
I spoke with the System Admin for the server, and disabling the UserCountryMap plugin seemed to prevent the occasional memory spikes. I’ll update this afternoon to verify this was the issue.