On 03/17/2012 08:07 PM, Zane H. Healy wrote: I don't, but I can tell you that, as a years-long OS X aficionado, I ditched it in favor of Linux for primarily speed reasons. Every OS X "update" made the system even slower...almost like someone wanted me to go out and buy new hardware. Funny, that. No more OS X for me. I still like it and I still recommend it, but I don't use it for my own stuff anymore. -Dave -- Dave McGuire, AK4HZ New Kensington, PA

At 6:55 PM -0700 3/17/12, Cameron Kaiser wrote: Well, as my primary applications are Adobe Lightroom, Phase One's "Capture One", Adobe Photoshop, and a whole slew of Photoshop plugins, I only have one choice since I won't run Windows as a primary system at home. The nice thing about Mac OS X for me is it can run the UNIX apps I need, and thanks to Parallels I can run Win XP for the one game I want to run (so I've retired my Core 2 Duo Win XP system), and I can even run Linux, or OpenBSD for testing. The only other system I'm currently running at home is a Pentium III running OpenBSD. I'm running Mac OS X 10.6.8 on the current 2.4Ghz 8-core (dual) Mac Pro. I have 24Gb of RAM, and that's not enough. When I bought the system it came with 6Gb of RAM, and was actually slower than the Rev.0 Dual 2Ghz G5 PowerMac I had, which had 7Gb of RAM, and was running 10.4.x. It wasn't until I moved to 24Gb that the system was faster, how pathetic is that! OTOH, I ran both CPU's on the G5 at 100% most of the time, while this system barely breaks a sweat most months. As for Linux, as of January of this year, I've been running it for 20 years. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com | OpenVMS Enthusiast | | | Photographer | +----------------------------------+----------------------------+ | My flickr Photostream | | http://www.flickr.com/photos/33848088 at N03/ |

On Mar 17, 2012, at 8:07 PM, Zane H. Healy wrote: This is a little late, but I recall testing some of my own code on Linux vs. OS X (probably 10.4) and found that dynamic memory allocation had a very high per-call overhead on OS X compared to Linux because it went straight into a kernel call (ISTR Linux dumped at least a portion of the allocation into userland, but it could have been just that you weren't making a highly abstracted microkernel call, which does carry a lot of overhead). If you find (through profiling) that you're spending an ungodly amount of time on malloc() calls, there are a few options: - Try to do more malloc()s at startup instead of at run-time, if it's possible; they'll be less noticed at startup. - Pre-allocate a huge chunk of memory for your heap, then use your own allocator (either write one or use nedmalloc, which is great). This is typically how most games do it, because you can't rely on malloc() to be speedy on any given OS (plus, for games, you can put in all sorts of tags to see who allocated what so you can find leaks more easily). I've found every operating system slows down as time progresses. The first iteration of Windows XP ran fine on a Pentium III. Update it to Service Pack 3, though, and you have problems. Modern NetBSD is painfully slow on what used to be "big iron" (my Power Mac 9500 with gobs of RAM), and I imagine Linux is no picnic on it either. As for OS X, 10.4.1 is quite speedy on my MDD G4, but the last version of 10.4 (whatever it is) was about half the speed. The OS, however, will not slow *everything* down. Self-contained apps that didn't do much interaction with the OS (e.g. I/O) didn't take much of a hit. Apps bundled with and upgraded with the OS did, however. What finally got intolerable for me with the MDD G4 was Safari and its monotonically decreasing Javascript performance; Google Maps became nearly unusable, and that was that. - Dave

I'd run it through Shark.app on the Mac, myself. That's quite useful for finding things like that. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Always proofreed you writing. ----------------------------------------------

On 03/20/2012 02:53 PM, Nemo wrote: Fixed..... Sorry, was a bit late yesterday Jos