[Mulgara-general] Performance of the commit operation

[Schwichtenberg, Frank]

Hi Paul, 

> Yes, the timing your describing does sound very slow, and it should be
> possible to fix it, I'm just not sure where your problems are going to
> lie.
> 
> Out of curiosity, are you able to run a server independently, and
> store data quickly enough, or is this slow as well?  If it's fast with
> Mulgara, then it's an issue with the Fedora interface (and I'll work
> with Fedora to see what we can do to help there).  Otherwise, then
> I'll try to help from the Mulgara end.

We tried around a lot and it seems to be the mulgara commit operation.
The durations Andre mentioned are from using the ItqlBean:

> > But with Mulgara we have discovered a massive loss in write 
> speed (about 5 times slower than before). When playing with 
> the Mulgara ItqlBean we found that the commit operation needs 
> a relatively constant time of about 0,5s - 1s on our dual 
> Opteron server machine, even on an empty triple store.

Using the Itql-Shell with a stand-alone mulgara shows nearly the same
behavior than the interaction between our system and Fedora (using
mulgara). A commit in the shell takes nearly the same time than a sync
in Fedora.

Best Regards, Frank
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