On Dec 5, 2012, at 2:05 AM, Mike Abdullah <cocoa...@mikeabdullah.net> wrote:
> > On 5 Dec 2012, at 04:41, Kyle Sluder <k...@ksluder.com> wrote: > >> NSOperationQueue uses KVO for dependency tracking and queue width >> management. In 10.7, the implementation was apparently changed to thunk >> all KVO ops onto the main thread; I'm guessing this fixed a bug by >> serializing all state changes. It also slowed down enqueueing >> operations onto our NSOperationQueue from a background thread by a >> factor of ten or more. I have samples to prove it. > > Wow, that's a big change! Are there are docs to back it up, or is this purely > empirical? > Not that I've seen. The only evidence I have is a pile of samples. --Kyle Sluder _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
