… it went at 2x speed.) Three: measure it more scientifically. Use our patched server, which gives you a USER_STATISTICS table…. If the slave threads are always running, you can just use the server’s uptime instead. [1] There are cases where…, especially if you’re monitoring Seconds_behind_master instead of using mk-heartbeat, which is immune to this anomaly.

I have been using the mk-heartbeat type method for a few years now (using my own version). I found this excentual to actually…