Jump to content

  • Log In with Google      Sign In   
  • Create Account

BGBTech: The Status Update

partial status: HDD crash, in-engine profiler, new clouds/...

Posted by , 03 March 2014 - - - - - - · 849 views

so, what happened recently:
one of my HDDs (in this case, a Seagate 2TB drive) decided to die on me mostly without warning.
* curse of Seagate: damn near every time I have used a Seagate drive, it has usually ended up dying on me.
** sort of like my experience with ASUS motherboards...
*** had reliability problems with several ASUS MOBOs, got a Gigabyte MOBO, and everything worked.
*** maybe not a good sign when the MOBOs come wrapped in cardboard.
** actually the MOBO issue is less severe, a crashy OS is less of an issue than lots of lost data.

luckily for me, it wasn't my main OS drive (which is currently a "WD Caviar Black").
well, originally I was using a "Caviar Green" for my main OS drive, but it was 5400 RPM and often had performance issues (computer would often lag/stall, becoming somewhat IO bound). using a (more expensive) 7200 RPM drive made performance a bit better.

but, yeah, didn't loose much particularly important, as (luckily) I tend to try to keep multiple copies of a lot of more important stuff (on different drives, ...). but, still did loose some amount of stuff (like, all my 2D character art, and random downloaded YouTube videos, and my installations of Steam and VS2013, ...), and may have lost one of my newer fiction stories, ...

some of this is because, sadly, both drive reliability (and the OS going and stupidly turning the filesystem into mincemeat) are not entirely uncommon IME (though the FS mincemeat issue seemed more common with WinXP and NTFS drives, not seen it happen with Win7 thus far, nor had I seen it happen with FAT32 drives).

in this case, the HDD itself mostly just stopped working, with Windows mostly just giving lots of "drive controller not ready" error messages, and Windows otherwise not listing the drive as working. though a few times it had worked sort-of, and (with luck) when I get a new HDD, maybe I can see if I can image the old contents onto a new drive.

otherwise, recently added an in-engine profiler.

mostly this was because after the HDD crash, and resorting back to VS2008 for building my 3D engine (VS2013 had been installed on the crashed HDD), CodeXL stopped being able to effectively profile the thing for some reason or another.

since both CodeAnalyst and CodeXL have a lot of "often don't work for crap" issues, I was like "oh hell with it" and basically just made a rudimentary profiler which can be run inside the engine. it aggregates things and tells me which functions use most of the time, which is the main thing anyways (source-level profiling is nice, but would be more involved, and would probably require a proper UI vs just dumping crap to the console).

did observe that the majority of the execution time in these tests was going into "NtDelayExecution", which was mostly related to sleeping threads. made it so that the statistics aggregation ignores this function, mostly so that more sane percentages can be given to other functions.

beyond this, most of the execution time seems to be going into the OpenGL driver, and into some otherwise unknown machine-code (not part of any of the loaded DLLs, nor part of the BSVM JIT / executable-heap). may be part of OpenGL.

this becomes more so if the draw-distance is increased.

did otherwise make some animated clouds and a new sun effect.

basically, rather than simply using a static skybox, it now uses a skybox with a sun overlay and some animated clouds overlaid (though with a few unresolved issues, like color-blending not working on the clouds for some reason I have yet to figure out).

new clouds and some tweaks to metal biome can be seen here: