| commit | 1cf2f7b5a06125ae7f06b7b709a9cb28aaa491a3 | [log] [tgz] |
|---|---|---|
| author | ulfjack <ulfjack@google.com> | Mon Jul 01 07:36:19 2019 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Jul 01 07:38:49 2019 -0700 |
| tree | 01fb72b40ddd2e56eef503dbc271b21aa9b36d95 | |
| parent | ade5327ad6efe3d70486f828ecac9f234d8c8020 [diff] |
Query performance: don't copy on every eval call Every query function calls into this method to eval any relevant sub-queries, and making a copy on every call is a very, very expensive proposition. However, graphless query does not use streaming, i.e., all functions make a single call to the callback, so this defensive mechanism is simply unnecessary. We only make this change for the new query environment, rather than more generally. For queries with a hot Bazel server (and all packages already loaded), this can improve performance by as much as 2x. Before (first run omitted): real 0m1.308s real 0m1.285s real 0m1.524s After (first run omitted): real 0m0.650s real 0m0.549s real 0m0.521s PiperOrigin-RevId: 255951627
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