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Merge bitcoin/bitcoin#25970: Add headerssync tuning parameters optimization script to repo
3d420d8f28 Add instructions for headerssync-params.py to release-process.md (Pieter Wuille)
53d7d35b58 Update parameters in headerssync.cpp (Pieter Wuille)
7899402cff Add headerssync-params.py script to the repository (Pieter Wuille)

Pull request description:

  Builds upon #25946, as it incorporates changes based on the selected values there.

  This adds the headerssync tuning parameters optimization script from https://gist.github.com/sipa/016ae445c132cdf65a2791534dfb7ae1 to the repository, updates the parameters based on its output, and adds release process instructions for doing this update in the future.

  A few considerations:
  * It would be a bit cleaner to have these parameters be part of `CChainParams`, but due to the nature of the approach, it really only applies to chains with unforgeable proof-of-work, which we really can only reasonably expect from mainnet, so I think it's fine to keep them local to `headerssync.cpp`. Keeping them as compile-time evaluatable constants also has a (likely negligible) performance impact (avoiding runtime modulo operations).
  * If we want to make sure the chainparams and headerssync params don't go out of date, it could be possible to run the script in CI, and and possibly even have the parameters be generated automatically at build time. I think that's overkill for how unfrequently these need to change, and running the script has non-trivial cost (~minutes in the normal python interpreter).
  * A viable alternative is just leaving this out-of-repo entirely, and just do ad-hoc updating from time to time. Having it in the repo and release notes does make sure it's not forgotten, though adds a cost to contributors/maintainers who follow the process.

ACKs for top commit:
  ajtowns:
    reACK 3d420d8f28

Tree-SHA512: 03188301c20423c72c1cbd008ccce89b93e2898edcbeecc561b2928a0d64e9a829ab0744dc3b017c23de8b02f3c107ae31e694302d3931f4dc3540e184de1963
2023-10-05 11:28:29 +01:00
.github Merge bitcoin/bitcoin#28561: build: Update qt package up to 5.15.10 2023-10-04 18:37:31 +01:00
.tx qt: Bump Transifex slug for 26.x 2023-09-01 07:49:31 +01:00
build-aux/m4 build: Bump minimum supported GCC to g++-9 2023-05-18 12:24:40 +02:00
build_msvc build: Update qt package up to 5.15.10 2023-10-04 14:00:57 +01:00
ci ci: Print Linux kernel info 2023-10-03 16:37:43 +02:00
contrib Merge bitcoin/bitcoin#25970: Add headerssync tuning parameters optimization script to repo 2023-10-05 11:28:29 +01:00
depends build: Update qt package up to 5.15.10 2023-10-04 14:00:57 +01:00
doc Merge bitcoin/bitcoin#25970: Add headerssync tuning parameters optimization script to repo 2023-10-05 11:28:29 +01:00
share depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
src Merge bitcoin/bitcoin#25970: Add headerssync tuning parameters optimization script to repo 2023-10-05 11:28:29 +01:00
test Merge bitcoin/bitcoin#27823: init: return error when block index is non-contiguous, fix feature_init.py file perturbation 2023-10-04 15:36:57 -04:00
.cirrus.yml Merge bitcoin/bitcoin#28353: ci: Remove /ro_base bind mount, Remove LC_ALL=C from s390x task 2023-08-30 16:23:39 +01:00
.editorconfig ci: Drop AppVeyor CI integration 2021-09-07 06:12:53 +03:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore build: produce a .zip for macOS distribution 2023-09-15 13:47:50 +01:00
.python-version ci: Use DOCKER_BUILDKIT for lint image 2023-07-16 13:18:18 +02:00
.style.yapf Update .style.yapf 2023-06-01 23:35:10 +05:30
autogen.sh build: make sure we can overwrite config.{guess,sub} 2023-06-13 14:58:43 +02:00
configure.ac build: remove dmg dependencies 2023-09-15 13:47:50 +01:00
CONTRIBUTING.md doc: Explain squashing with merge commits 2022-05-24 08:17:41 +02:00
COPYING doc: Update license year range to 2023 2022-12-24 11:40:16 +01:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am build: produce a .zip for macOS distribution 2023-09-15 13:47:50 +01:00
README.md doc: Explain Bitcoin Core in README.md 2022-05-10 07:49:09 +02:00
SECURITY.md doc: Add my key to SECURITY.md 2022-08-23 16:57:46 -04:00

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.