thanks god 4 the company.
I really don't care much for those, but - despite adobe support abism - I tested drive Lr 5.2 in mavs and fliessss.
Vitaliy I see you're pushing forward the thread titling poetry, je je

Seems like they also added few surprises to OS X:

Mavericks tries to put the CPU into an idle state whenever possible. Powering the processor back up to a ready state also requires a significant amount of energy, so it’s important to extend that power-sipping idle time long enough to provide a real reduction in energy use. The problem is that most applications aren’t aware that the processor is taking a break.

Apple developed App Nap, a feature that works behind the scenes to better manage the work that open apps are doing. Essentially, App Nap senses when an app isn’t doing anything and puts that app into a low-power state. This state involves timer throttling, which reduces an app’s need to use the CPU; I/O throttling, which gives the app low priority for accessing storage or a network connection; and priority reduction, which assigns an app a smaller portion of a CPU’s processing time. Apple says App Nap can reduce the amount of power that apps are using by as much as 23 percent.

If an app is playing audio, downloading a file from a server or the Internet, or doing something else in the background that requires the full attention of your Mac’s resources, App Nap will not activate. Also, software developers can write their apps so as to disable App Nap.

http://www.macworld.com/article/2057226/get-to-know-os-x-mavericks-under-the-hood.html

To be short - we are going the way of iOS, Windows 8 full screen mode and such. Where writing normal multitasking app becomes more and more complicated.

Haswell was last big leap is battery power by integrated large bridge chip inside CPU and using latest technology for it also. making desktop approach similar to mobile LSIs.

All new advances will be mostly software that will try to shoot down your app at any moment possible to get better battery life, especially in benchmarks.

I'm running mavericks and snow leopard; while SL is the fastest skinny hunter, Mavs manages better the whole resources circus. With use gets better, literally.
New adobe updates AE, PS, Prem run really smooth. Speesgrade is total (cough) shit regarding responsivevness , at least in ma-machine which is mitigated by Lr 5 brontosteadynes we go slow but with no lag, said the brontosaurius :P

I wish I could fullscreen ANY application though and that behind software dpt were more crazy / imaginative people... probably brainwashed anyway. Vi ses

If you find Mavericks sluggish after installing, try running Mavericks Cache Cleaner Maintenance and Optimization. It works fine in demo mode. Or repair permissions on Disk Utility.

http://www.northernsoftworks.com/maverickscachecleaner.html

Also, for older non Haswell Macbook Air and Macbook Pro, there's a free app called Battery Squeezer that may help squeeze a little more time out of your battery. There are a few reports that Mavericks is draining the battery faster than ML on some Macbooks. The free version is in the Macapp store.

http://triphackr.com/extend-laptop-battery-life-with-batterysqueezer

@maxr Thanks, meant checked sorry. It stopped being completely useless about a week after I downloaded Mavericks but I still get weird things like yellow and various hues of red screens when it won't play footage that wants rendering that previously was no issue and I can't view background tasks so can't stop exports or whatever and other things outside of fcp are slower. Anyway, am living with it for now, just have to buy a new computer soon!