[sldev] Cache speed experiment & results...

[Barney Boomslang]

Hey,

yep, I run that option enabled for as long as I know about it's
existance - and yep, it does help definitely. I have a dual-core
machine, so it actually enhances FPS since part of the code is
offloaded  to the other core. And I never had any problems that were
linked to that option - or to put differently, everytime I had
problems I thought might be related to it, they didn't improve by
switching it off and usually where solved by one of Nicholaz' patches
;)

bye, Barney

On 6/4/08, Nexeus Fatale <nexeus at nexeusfatale.com> wrote:
> I wonder if anyone has tested the run multiple threads and have found
>  any improvements
>
>
>  - Nexeus
>
>
>  On Tue, Jun 3, 2008 at 9:11 PM, Matthew Underwood <sakkaku at gmail.com> wrote:
>  > On Tue, Jun 3, 2008 at 8:45 PM, Dahlia Trimble <dahliatrimble at gmail.com> wrote:
>  >> If the goal were to improve seek time in a cache, how about keeping the
>  >> cache on one of those readyboost-capable usb flash drives? They can have
>  >> seek times as low as 1 ms or better, although the transfer rate and write
>  >> times arent all that fast.
>  >>
>  >> Then again it's probably moot if the bottleneck is the decoding :/
>  >>
>  >> On Tue, Jun 3, 2008 at 5:12 PM, Felix Duesenburg <kfa at gmx.net> wrote:
>  >>>
>  >>> Dale Mahalko wrote:
>  >>>>
>  >>>> ...
>  >>>> Windows isn't good at dealing with directories containing tens of
>  >>>> thousands of files. Ever tried opening a folder containing 20,000
>  >>>> files? There is a delay of several seconds trying to do this in
>  >>>> Windows. Also the hidden MFT and directory structures can become
>  >>>> ridiculously fragmented, also leading to slowdowns.
>  >>>>
>  >>>
>  >>> Reiser4 is excellent with exactly these requirements. It's not mature
>  >>> enough to be considered reliable for critical systems, but for a cache? It
>  >>> doesn't help that Reiser himself is removed from the development process,
>  >>> but it's still there and the source available. Shouldn't that be possible to
>  >>> be included as a virtual filesystem even under Windows?
>  >>>
>  >>> I also always thought it must be a good way to boost performance if the
>  >>> cache lived on its own partition, like a Linux swap partition. For the Linux
>  >>> version of SL this would even sound like the most natural way to do it.
>  >>> Setting such a thing up on an existing Windows machine has a slight fear
>  >>> factor attached and is not for everyone, but if a savvy user can handle it,
>  >>> why not offer. I'm speculating, but the difference could be dramatic,
>  >>> especially if we had a better file system than NTFS on that partition.
>  >>>
>  >>> >
>  >>> > A proper local database engine would likely deal with these huge
>  >>> > numbers of tiny files more efficiently than the local operating
>  >>> > system.
>  >>>
>  >>> Yes, but the usual architecture with the database running as a localhost
>  >>> server is not ideal for our situation since everything is squeezed back and
>  >>> forth through the network system, plus SQL parsing, unnecessarily. With
>  >>> MySQL you could build directly on top of the storage engine though, even
>  >>> bypassing the parsing with direct API calls. It would just serve as a
>  >>> virtual file system the same way as suggested above. I still believe that
>  >>> Reiser4 would be even faster. And according to the description on its (now
>  >>> defunct) website, they claimed reaching 94% package density with small
>  >>> files.
>  >>>
>  >>> Felix
>  >
>  > SQLite in a single user environment is incredibly fast so long as you
>  > don't let the database grow too large.  Of course you have to figure
>  > out how efficiently textures can be stored and retrieved in SQL
>  > compared to the current caching system.
>  >
>  > On a side note: Does anyone know where it defines the polygon meshes
>  > for rendering cubes.  I really want to try forcing untwisted, un-holed
>  > cubes down to 1-2 polygons per side and see if that will help out with
>  > the frame rate.  I tried looking through the source but it is lacking
>  > in [helpful] comments.
>  > _______________________________________________
>  > Click here to unsubscribe or manage your list subscription:
>  > /index.html
>  >
>  _______________________________________________
>  Click here to unsubscribe or manage your list subscription:
>  /index.html
>