Early-stage alert system. If you set the plugin to do so, it should alert you when the server falls below this threshold. settings.yml modifications for this:
adminNotifications:#Should LagMeter notify Ops and players with the permission node "bukkit.broadcast.admin"?#Don't give this node to people you wouldn't like seeing administration broadcast, such as opping, de-opping, etc.#Default: trueLag:true#After this TPS, start notifying the aforementioned groups that the tps is below this setting:#(Default: 16) - This makes it notify when the TPS hits 15. It's less than, not less-than-or-equal-to.tpsThreshold:20#Same deal as "Lag:" but memory notifications instead.Memory:true#Same deal as with tpsThreshold; however, this one is a percentage. It is not less than or equal to, it is only less than.#Default: 26 (This makes it announce as the memory hits 25%, as it is < 26%, 26% wouldn't start it notifying such)memoryThreshold:99