Fast data access prototype #7
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### What In order to investigate #4415 I wanted to reproduce it. This PR adds a benchmark that inserts many rows using the same timepoint, either in-order or shuffled. I also fixed a "bug" in the existing insertion benchmarks, which accidentally were _also_ measuring the time to call `DataTable::to_rows` (and collect the result), which was about 10% of the measured time. --- 5950X pinned to core #7 / Arch: ``` datastore/num_rows=1000/num_instances=1/shuffled=false/insert_same_time_point/insert 1.00 1641.2±28.89µs 595.0 KElem/sec datastore/num_rows=1000/num_instances=1/shuffled=true/insert_same_time_point/insert 1.00 3.0±0.04ms 328.4 KElem/sec datastore/num_rows=10000/num_instances=1/shuffled=false/insert_same_time_point/insert 1.00 27.1±1.59ms 361.0 KElem/sec datastore/num_rows=10000/num_instances=1/shuffled=true/insert_same_time_point/insert 1.00 162.5±1.23ms 60.1 KElem/sec ``` ### Checklist * [x] I have read and agree to [Contributor Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and the [Code of Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md) * [x] I've included a screenshot or gif (if applicable) * [x] I have tested the web demo (if applicable): * Using newly built examples: [app.rerun.io](https://app.rerun.io/pr/4676/index.html) * Using examples from latest `main` build: [app.rerun.io](https://app.rerun.io/pr/4676/index.html?manifest_url=https://app.rerun.io/version/main/examples_manifest.json) * Using full set of examples from `nightly` build: [app.rerun.io](https://app.rerun.io/pr/4676/index.html?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json) * [x] The PR title and labels are set such as to maximize their usefulness for the next release's CHANGELOG - [PR Build Summary](https://build.rerun.io/pr/4676) - [Docs preview](https://rerun.io/preview/75ba0c0685dbea827b473270b1b350e348e72974/docs) <!--DOCS-PREVIEW--> - [Examples preview](https://rerun.io/preview/75ba0c0685dbea827b473270b1b350e348e72974/examples) <!--EXAMPLES-PREVIEW--> - [Recent benchmark results](https://build.rerun.io/graphs/crates.html) - [Wasm size tracking](https://build.rerun.io/graphs/sizes.html) --------- Co-authored-by: Clement Rey <cr.rey.clement@gmail.com>
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A new data store which is homogeneous (same type at each type path) and supports batching for fast logging of a lot of data.