# :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: 041eb8a5867b321e6ddd4fb5b245e1d6c6e1a3d1 | Previous: 5e6687da78275ea5963573300c8de5bd2127397d | Ratio | |-|-|-|-| | `benchmarks/common/memmap_benchmarks_test.py::test_serialize_weights_pickle` | `1.1818489285420404` iter/sec (`stddev: 0.27600779099750455`) | `2.5137835123968166` iter/sec (`stddev: 0.06323175127777977`) | `2.13` | 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/041eb8a5867b321e6ddd4fb5b245e1d6c6e1a3d1#commitcomment-146797697

WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv

WARNING: The directory '/github/home/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag.

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 2.5137835123968166 and current value is 1.1818489285420404. It is 2.1269922506067553x worse than previous exceeding a ratio threshold 2