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Won't Fix

Votes

15

Found in

2018.3.0a5

2018.3.3f1

2019.1.0a2

2019.2.0a1

Issue ID

1122594

Regression

Yes

Active Constraints number spikes inside profiler when Rigidbodies are rolling

Physics

-

Reproduction steps:
1. Open the stripped project inside "1122594_repro.zip"
2. Open the Profiler window together with Physics category and tick only "Active Constraints"
3. Open and Play "SampleScene"

Expected: "Active Constraints" inside the profiler displays correct information
Actual: "Active Constraints" number spikes irrationally

Reproduces on: 2018.3.0a5, 2018.3.5f1, 2019.1.0a2, 2019.1.0b3, 2019.2.0a1, 2019.2.0a4
Does not reproduce on: 2017.4.20f1, 2018.3.0a4, 2019.1.0a1

Note:
- The spike usually shows 65.5k, which seems like the max value of an unsigned short data type
- No actual performance drop

  1. Response avatar

    Resolution Note (2021.2.X):

    We decided that this metric has been too unstable and difficult to make use of, therefore we are removing it from the default Physics Profiler module for the time being.

Comments (2)

  1. 644c98a9a49586c9a031ad1d0db737d1?d=mm

    RtsDimon

    Jul 19, 2021 09:04

    Same problem in 2020.3.1f1

  2. 35637252207c92af308a7d170b8432b3?d=mm

    JJRivers

    Dec 09, 2020 09:32

    Getting similar active constraints spikes to 65.5k WITH performance drops. When these happen i'm not seeing any obvious cause for them in the Physics Debugger visualization either. In Unity 2020.1.6f1

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