I just spent the last 2 hours fooling with Yosemite. My conclusion: WHAT A PIECE OF CRAP!!!!
I did some updates and they were abysmally slow. The translucency actually irritated me. The childish looking icons annoyed the living hell out of me. The response is sloooooooooooooooow!!!!!!
I do beta testing for SCSC who develops Scannerz, and with that product they include a product named Performance Probe. Unlike the current implementation of Activity Monitor, it STILL shows actual memory consumption in real time.
If you think that Yosemite is a "tight and efficient" operating system, you have your head up your ass. With nothing more than Mail and Safari running the things using up almost 3GB of memory. Performance is abysmal. Performance Probe is showing tons of swap and page changes that simply just didn't exist in previous OS releases. Finally, when using it with other OS X versions, it's overhead was on the order of 2-5%, depending on what you're doing, but with Yosemite it's more like 10-18%? Where's that delta coming from????
Well, I suspect I know the answer: Translucency. I got fed up with the butt-ugly effects of translucency in the menu bar, so I came up with a trick to eliminate it. How? Scale the background image to the size of the display, measure the area of the menu bar's height and length in pixels, and then cut the area of the menu bar and fill it with white or gray, and then save and install that image as the background. The trick works, but what I noticed is that for Apple to enable the "brilliant" (sarcasm alert) effects of translucency, apparently the "trick" is to mathematically scatter the colors over an area. I thought I could make the menu bar have a 3D effect by putting a black line down the center of the image, but all I got was a general gray.
My conclusion: Every single pixel in the display needs to be mathematically "morphed" to accommodate translucency. God, this is stupid. Apple claims it's trying to make their systems more power efficient, but they throw some absolutely stupid work load at the CPU/GPU just to come up with a gimmicky look. And IMHO, it's stupid, annoying, and irritating.
I must say, this is the first operating system released by anyone, anywhere, that's actually managed to put me in a bad mood after using it for a few hours.
WELL DONE, JONATHAN IVE!!!! WELL DONE!!!
Now that you've managed to make yourself the head of all OS operations, what can we expect next? Perhaps some type of move where a user needs to use their elbows on a trackpad to access their home folder? How about this idea: Get rid of that confusing Unix kernel and replace it with a single tasking kernel like Apple had back in the early '80s. Multi-tasking can be soooooooo confusing to idiots. Golly Gosh!!! I changed windows and the process kept running….that's sooooooooo confusing. If only the OS would act like an iPhone and stop processing when someone isn't looking at it!!!!
Where does the stupidity stop?????