http://www.droppedpackets.org/scripts/ldms_status
I was at a customer Friday, and discovered that when I hovered over ldms_status, it would turn red, flail madly, and keel over dead, sort of like Bowker holding a ball at first and trying to decide what to do with it. Turns out, their server had 1 Inventory Service thread and 4500 clients, so LDSCAN contained a backlog of 4300 inventory scans, and growing. Whenever CountPendingScans ran, ldms_status was correctly deciding to restart the inventory service. It was incorrectly ignoring several instructions to wait a few seconds, and it was incorrectly doing this over and over as long as I hovered over the icon, causing a flickering stream of balloon tips and event viewer messages and doing nothing for the backlog of scans.
Partially, this is a discovery of unexpected behavior from the poorly documented perltray... I'm discovering that the Tooltip subroutine runs repeatedly as long as you're hovering on the icon, and I suspect that it sets the Timer too, overriding my timer settings. But the other part is that I was sloppy about the tooltip in the first place, and was calling code on demand. So, I decoupled the CountPendingScans subroutine from ToolTip. I'd been meaning to do that anyway as a matter of good practice, so finding a bug is just good impetus to do it right.
