| commit | 1ef910b28bc01af1f36beed9cff6e5e4e9a29bcc | [log] [tgz] |
|---|---|---|
| author | ulfjack <ulfjack@google.com> | Wed Jun 05 07:09:04 2019 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Jun 05 07:10:00 2019 -0700 |
| tree | 903d21622b3d7666800f85b629c4dd0a3ef606c2 | |
| parent | 9083bbe645818a25894b23e70d723f7c7dad36e4 [diff] |
Query performance: Support length-delimited protos Add support for --output=streamed_proto, which outputs the targets as a stream of length-delimited plain protos rather than a single monolithic proto. For queries with a lot of results, this is significantly faster (up to ~30% in my tests, though note that my baseline test contained a series of as-yet unsubmitted improvements). The primary driver of the performance improvement on the Bazel side appears to be the decreased memory pressure resulting in lower gc times. In any case, the requirement to retain the full result on the Bazel side as well as the receiver side is a showstopper for large queries. We might want to consider wrapping the resulting targets in another proto that allows us to add some per-package information in the future. Another performance issue is the duplicate location field on every single target, which constitutes up to ~30% of the output size. Even with relative paths, we see around ~14% of the output being location data. PiperOrigin-RevId: 251636100
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