Posts tagged Cool

Check out these

about computer hardware images:

Scotch & cubane & Adios.jpg
Image by Martin Kimeldorf’s Pixel Playground Flash GUIMark: 4.45 fps average
Image by schoschie Just stumbled across this interesting article about Benchmarking Flash Player 10 ( via Daring Fireball ). Ace’s DF Gruber puts it:Performance still sucks on Mac OS X compared to Windows Vista. Using the exact same computer (four-core 2.66 GHz Mac Pro with 6 GB of RAM), Hulu video playback Consumes 56 percent CPU on Mac OS X 10.5 vs.. just 7 percent on Vista. Flash video playback is about eight times more efficient on Windows. And yet people wonder why Apple is not anxious to get Flash on the iPhone.Indeed – I’m constantly pissed off by the pathetic performance of Flash on OS X. It’s very easy for me to tell if a web page uses Flash content – and be it only the most trivial little ad banner with some animated effects: my PowerBook’s 2 fans start up immediately and the system is maxed out at 100% CPU load. Everything else on the machine becomes so slow, it’s almost standing still, and the only cure is to close the page containing that Flash movie.Most Flash content on web pages is normal advertising. It’s a nuisance, but there are ways to get rid of it. In Camino, for instance, Flash content has to be manually activated by default (until you click on it, a placeholder is displayed for every flash movie). For Safari, There Is a similar safari stand Which adds blocking functionality.[Update 20090227: There is a webkit plug-in that does exactly this called ClickToFlash (for Safari et al.) by one of the developers working on Flash at Adobe:Wrote in a comment further down on that page, someone:[...] Even with Flash Player 10 beta 2, the performance under OSX is approximately half that of Windows XP. It is approximately 28fps under OSX and around 58fps under Windows XP.Sun even the very latest version of Flash Player 10 under OSX is about half the speed of Windows!The frustrating thing is that Adobe has not given any clear reason to account for the lack of performance.Another puzzling thing is that Adobe is now saying that the text rendering has been very slow in the past, it has now identified the bottleneck and fixed it. But why has this taken so long to find bottleneck? The implication seems to be that no-one at Adobe has even tried to sort out the performance problems by profiling the code.So with no explanation for the dramatic difference in speed on the same hardware under different operating systems, it is beginning to look like Adobe not only does not know why there is such a dramatic speed difference, but it has never made the effort to find out .Adobe Sun – any answers as to why OSX is STILL so slow, or no one has done the work to identify the problem?To which the blog author replied:[...] Please read my comment on the site GUIMark. I was very clear about why there is still a difference. The standalone player is only about 10-20% slower than the windows version with this specific benchmark.This residue can be attributed to gcc. Even Apple finally has had enough and is starting to develop a replacement based on LLVM: So it seems my cynical fears of conspiracy or maliciously ignoring performance of Adobe Flash on OS X are unfounded. They are in fact trying to make it run as fast as possible everywhere, but they are not doing as well as on Windows. The reasons are pretty technical, as that same blogger explains in his comment on the GUIMark site (which he refers to in the above reply):We have identified the bottleneck in the Flash Player for OSX. Like in the other plugins the culprit is text rendering, in this case rendering using device text. This benchmark spends> 50% in a single function OSX: ATSUGetUnjustifiedBounds. You can verify this yourself using Shark. I am working on a Change Which Will cache the results returned by that call this API to where should completely disappear from the performance profile.Googling for the function in question brought me to on Which it says:Note: Although the function ATSUGetUnjustifiedBounds (formerly named ATSUMeasureText) returns the typographical ascent and descent values, using this function to obtain ascent and descent values ??might degrade performance. You should not use ATSUGetUnjustifiedBounds to obtain these values. )-The above screenshot is the performance graph of my machine running the GUIMark benchmark. Current windows PCs run this same benchmark at about ten times the speed. It’s frustrating, but it seems things will get better.By the way, the performance of Flash on OS X is the reason why the iPhone does not play Flash content within web pages, and why there is a special application just for YouTube (which probably uses a specially optimized decoder and player for Flash video ( FLV) date, but can not play Flash movies per se) en.wikipedia.org / wiki / Flash_video Release Notes for Flash Player version 10 (Adobe) Gatchaman – G-2, Joe the Condor !
Image by raider3_anime