# :warning: **Performance Alert** :warning: Possible performance regression was detected for benchmark **'CPU Benchmark Results'**. Benchmark result of this commit is worse than the previous benchmark result exceeding threshold `2`. | Benchmark suite | Current: be44018b3846e774f1d2f16fe06570f7647e3075 | Previous: aeff8376045135bb7741ae07cd8a6efba1cecec0 | Ratio | |-|-|-|-| | `benchmarks/common/common_ops_test.py::test_membership_stacked_nested_last` | `82274.42759192688` iter/sec (`stddev: 8.527124017392414e-7`) | `227027.25780719792` iter/sec (`stddev: 4.2301170348706354e-7`) | `2.76` | | `benchmarks/common/common_ops_test.py::test_membership_stacked_nested_leaf_last` | `80141.71006175871` iter/sec (`stddev: 0.000002853086521583666`) | `224995.47753292607` iter/sec (`stddev: 3.5941790663881303e-7`) | `2.81` | This comment was automatically generated by [workflow](https://github.com/pytorch/tensordict/actions?query=workflow%3AContinuous%20Benchmark) using [github-action-benchmark](https://github.com/marketplace/actions/continuous-benchmark). CC: @vmoens Comment was generated at https://github.com/pytorch/tensordict/commit/be44018b3846e774f1d2f16fe06570f7647e3075#commitcomment-151125854

Performance alert! Previous value was 227027.25780719792 and current value is 82274.42759192688. It is 2.759390304521241x worse than previous exceeding a ratio threshold 2