[Opensim-dev] [Non-DoD Source] Re: Still on Sim and Phys Frames per Second (FPS)

[dz]

On Mon, Nov 16, 2015 at 7:33 PM, Teravus Ovares <teravus at gmail.com> wrote:

> Regarding this...    why are we not co-opting a different, currently
> unused, sim stats for the OpenSimulator 'Real performance' counter?   There
> are many unused simstats.    If we keep the fudge factor on the main one,
> the viewer lag meter are happy, and we put the real value in a different
> sim-stat, the performance analysis can take place accurately.
>
>>
>>
Teravus..

The whole point of starting this conversation  was that WE HAD THESE
CONVERSATIONS..  We had a community forum discussion on how to implement
 reporting of the correct statistics.   The Moses group found a comment
buried in the source code and asked about  WHY someone decided to multiply
the Physics frame rate  ( which is LOCKED at 11 FPS ) by a factor of 5...
  No one on core  could really  explain it until Justin suggested reaching
out to you..  That grew into a discussion of  whether it made any sense to
continue to report  "politically correct" numbers   or  the  actual Physics
frame rate.    The overwhelming  majority of the people who responded
 indicted that it didn't make ANY sense to continue reporting the bad
stats.    The answers we got from the core team  was that it might break
performance monitoring scripts   or have an effect on some internal
calculations...  There was an extended  period of discussion to allow folks
to make suggestions or comment on the things that would break    It took
almost 3 months  from the beginning  of the discussion to the time it was
applied.  There was NO guidance from core that it was in any way important
to maintain the functionality of an obscure feature in some un-maintained
 viewer code.

The objection I raised to begin this debacle  was that it seemed like  a
member of core had just randomly decided that after 3 months of asking
folks to jump through hoops,  and then  6 months  of  having the sky NOT
fall, it was ok to make a unilateral decision to revert the patch ( or
 override it  with some new  hidden config  variable  that would only
continue the confusion about what the actual Physics FPS rate was).

After all is  said and  done...It still seems to me  like that is  the
situation...   I have  given up trying to get any real discussion  about
 who it was that demanded  that we revert the patch so their  NON ACCURATE
lag meter  blinks green instead of red.  We have heard form  other grid
owners,  we have heard from viewer devs,  we have heard from academics
 whose reputations  may have been tarnished by publishing incorrect data.
Bottom Line... One  core  member  has decided that it is ok to ignore the
efforts  of this forums  community  and introduced a solution that lets the
same code base  report  55 OR 11  for the exact same statistic in the exact
same  code base,  Its also been decided  that it is  STILL correct to add
yet another level of complexity and possible  source of confusion to the
situation by renaming  our  Fudge factor/lie   the  NORMALIZED number.

I can't  code like members of core,  I can't seem  to influence the
decisions  they are determined to make with regards to this insanity..
 This is not a technically  complicated  issue...  it is simply a matter of
making a decision about  what is  correct.   Apparently " correct "  is
related to the Euros that some unknown benefactor is willing to put up  to
make the lights blink green.  WE  ( nearly 95% of everyone  who
participated in the original period of discussion)  had agreed that
reporting the correct number was the right thing to do    MOSES spent
manpower and money  to go through the process of  getting a patch
submitted/corrected, and applied,   It  WAS NOT a problem for anyone
 except for some unknown users  on some unnamed  grid (  who have YET to
speak for themselves ).  My objection remains...  It is NOT proper  to  be
able to bypass the  community decision making nature WE assumed  was the
proper mechanism  to resolve  such issues.     We have  had  close to 150
posts on this topic in the past 2 weeks  and  NO ONE has been able to
explain why it is the correct decision  to revert the patch  AND ignore the
requests and  almost unanimous agreement  that the way things have been for
6 months was the  best technical  and political decision.

I am committed to making OpenSim  work..  I am sure there are  folks who
have seen this debacle unfold  who are now less committed  or interested in
trying to participate
with a technical group that believes it is  politically  "correct" to set
such a precedent ( ignoring community forum input in favor of backroom
"deals")...   How  can there possibly be a level of confidence in the
platform/community if it takes 9 months to come to an agreement   that  a
Physics Frame Rate  that is LOCKED at 11FPS  should not be reported at  11
FPS???   Its  not  a complicated  situation,  It isn't a hard  question...
But it has turned into a real eye opener  on the inside workings of this
project for me (and from the  comments I've received offline, for a large
number of others).

The lag meter didn't work before the numbers changed. At best  it was  a
random guess that was likely at least 10% off.  The original code would
cast the floating point FPS number to an int  before multiplying  by some
random factor of 5  to make sure that jitter  didnt  skew it wildly... It
STILL  doesn't  work.  Even the viewer devs  who participated and  went
through the trouble  to correct for the  11FPS number  told us,  the %
levels  at  which the lights are  green, yellow , or red  are  different
for OpenSim and  "that other grid".   Melanies'  solution means  that now
they have to rework their code to use her new  magical mechanism to
transmit the number 5  from Opensim to the viewer so it can do the
multiplication...It also means  that  grid operators  have to be able to
explain why the same stat on different grids  can be  just as correct  when
it says  11  as when it says  55.    That's not my problem, but I feel
sorry  for the  honest grid operators  who choose to tell the truth, and
face  charges  that their grid is 5x slower  than some other grid  where
the admin doesn't even know enough to change the new  INI config value.

Do I sound  frustrated  yet?

Please  don't  ask that question NOW..  The  bridges  are burned.
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