timothy from the that's-what-your-subordinates-are-for dept.
Brendan Gregg of Sun's Fishworks lab has an interesting video demo up at YouTube demonstrating just how bad vibes, if expressed with sufficient volume in front of a rack full of disks, can cause a spike in disk latency. White noise, evidently, doesn't do them much harm. (Maybe they just feel awkward to get yelled at on camera.)
I am not now, nor have I ever been, a member of the demigodic party.
-- Dennis Ritchie