MantisBT - opensim
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0007775opensim[REGION] OpenSim Corepublic2015-12-01 12:432015-12-01 19:41
kenvc 
 
normalminoralways
newopen 
Dual Quad core Xeon 3ghzWindows 64 32 gbServer 2012
master (dev code) 
 
b1c4f6915439c8f3469ba6933472ccf96463af59
Grid (1 Region per Sim)
BulletSim
.NET / Windows64
None
All viewers
0007775: "Rubber band" effect happens every 60 seconds when driving physical vehciles in Bulletsim or ubOde on rough terrain.
"Rubber band" effect when driving physical vehciles in Bulletsim or ubOde. Every 60 seconds the vehicle appears to stop getting position updates for a second or two. When this happens, the vehicle will continue along the path it was on before this happened. The vehicle may go underground or up in the air, then just as sudden, it will pop back to the original position and continue as if nothing happened. It feels like the vehicle position stops being updated for a second or two, then it returns to normal.

This behavior makes it very difficult to have races that are meaningful. This behavior often makes the driver loose control and go off the road.
Go to a sim running the latest dev master and drive a physical vehicle around for a while on uneven/rough terrain until you see the "rubber band" effect happen. It is harder to notice when driving on a flat track because the vehicle is normally not changing direction of height nearly as often as on rough terrain, but it is still happening at the same frequency.
It does this in both Bulletsim and ubOde and it did not do this in Bulletsim before the avn merge code was started. It does this regardless of the viewer that is being used.

I have heard complaints about this from others who use different hosting services or host their own, so I know the issue is not isolated to my sims.
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Issue History
2015-12-01 12:43kenvcNew Issue
2015-12-01 13:29kenvcDescription Updatedbug_revision_view_page.php?rev_id=5072#r5072
2015-12-01 13:46kenvcNote Added: 0029776
2015-12-01 19:24kenvcSummary"Rubber band" effect happens every minute or so when driving physical vehciles in Bulletsim or ubOde. => "Rubber band" effect happens every 60 seconds when driving physical vehciles in Bulletsim or ubOde on rough terrain.
2015-12-01 19:24kenvcDescription Updatedbug_revision_view_page.php?rev_id=5073#r5073
2015-12-01 19:24kenvcSteps to Reproduce Updatedbug_revision_view_page.php?rev_id=5075#r5075
2015-12-01 19:41UbitUmarovNote Added: 0029778

Notes
(0029776)
kenvc   
2015-12-01 13:46   
I just timed this with a stopwatch several times. On OSGrid International Sailing (ubOde) this issue happens at exactly 60 second intervals the best I can tell with a stopwatch.
(0029778)
UbitUmarov   
2015-12-01 19:41   
is there a neighbor region down ?