Given all the me too's. How about this one, same basic problem in the mid 2000's with linux. We were running a few servers with a normal desktop distro. I got t

Given all the me too's. How about this one, same basic problem in the mid 2000's with linux. We were running a few servers with a normal desktop distro. I got the bright idea that since no one was actually on the console we could save some ram/CPU by changing the default runlevel and not starting X/etc. Took about 2 days before someone complained we were running about 20% slower than normal. I think in the end the solution was to just fire off a X/xdm pair as I wasted a few days looking at scheduling/numa/shared interrupts/etc trying to get a good solid solution that didn't require starting X. We ran it like that for a couple years until eventually someone tried it again (after a bunch of software/hardware upgrades) and the perf didn't fall off.