# :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: 04faf408c143ff68b6acaf6568cdc3b8384da481 | Previous: 362c072dd9fbbd816eb9df19a6f79f0a7594b710 | Ratio | |-|-|-|-| | `benchmarks/common/memmap_benchmarks_test.py::test_serialize_weights_pickle` | `1.0830982240105338` iter/sec (`stddev: 0.3216190654579892`) | `2.410165998428883` iter/sec (`stddev: 0.06851554010875378`) | `2.23` | 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/04faf408c143ff68b6acaf6568cdc3b8384da481#commitcomment-147575640

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/setup-python@v4. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Performance alert! Previous value was 2.410165998428883 and current value is 1.0830982240105338. It is 2.2252515469044316x worse than previous exceeding a ratio threshold 2