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2c35fe6238
8722e54e56 threads: add thread names to deadlock debugging message (James O'Beirne)
383b186c28 threads: prefix log messages with thread names (James O'Beirne)
ddd95ccb80 tests: add threadutil tests (James O'Beirne)
ae5f2b6a6c threads: introduce util/threadnames, refactor thread naming (James O'Beirne)
188ca75e5f disable HAVE_THREAD_LOCAL on unreliable platforms (James O'Beirne)
Pull request description:
I'm resurrecting this one (from #13168) because I need it to make progress on #15735.
It's now off by default and can be turned on with `-logthreadnames=1`.
Ran some benchmarks (IBD from local peer from 500_000 -> 504_000) and it's within spitting distance either on or off:
### threadnames off (default)
#### 2018-05-threadnames.3 vs. master (absolute)
| name | iterations | 2018-05-threadnames.3 | master |
|------------------------------------------------|-----------:|----------------------------|----------------------------|
| ibd.local.500000.504000.dbcache=2048 | 3 | 376.1584 (± 9.2944) | 392.3414 (± 13.4238) |
| ibd.local.500000.504000.dbcache=2048.mem-usage | 3 | 2236117.3333 (± 1845.9623) | 2238690.6667 (± 2669.3487) |
#### 2018-05-threadnames.3 vs. master (relative)
| name | iterations | 2018-05-threadnames.3 | master |
|------------------------------------------------|-----------:|----------------------:|-------:|
| ibd.local.500000.504000.dbcache=2048 | 3 | 1 | 1.043 |
| ibd.local.500000.504000.dbcache=2048.mem-usage | 3 | 1 | 1.001 |
### threadnames on
#### 2018-05-threadnames-take-2 vs. master (absolute)
| name | iterations | 2018-05-threadnames-take-2 | master |
|------------------------------------------------|-----------:|----------------------------|----------------------------|
| ibd.local.500000.504000.dbcache=2048 | 3 | 367.6861 (± 0.3941) | 364.1667 (± 0.9776) |
| ibd.local.500000.504000.dbcache=2048.mem-usage | 3 | 2238461.3333 (± 3697.8730) | 2237014.6667 (± 3307.6966) |
#### 2018-05-threadnames-take-2 vs. master (relative)
| name | iterations | 2018-05-threadnames-take-2 | master |
|------------------------------------------------|-----------:|---------------------------:|-------:|
| ibd.local.500000.504000.dbcache=2048 | 3 | 1.010 | 1.00 |
| ibd.local.500000.504000.dbcache=2048.mem-usage | 3 | 1.001 | 1.00 |
```
ACKs for commit 8722e5:
Empact:
utACK 8722e54e56
jnewbery:
utACK 8722e54e56fd959fd4ff2321b36a7640dee440c5
MarcoFalke:
re-utACK 8722e54e56fd959fd4ff2321b36a7640dee440c5 (Only change since my previous review is DEFAULT_LOGTHREADNAMES=false and stylistic updates
Tree-SHA512: 50af992708295b8d680cf10025262dd964e599a356bdfc1dfc84fb18c00afabcb34d3d12d551b0677ff81f8fccad0e17c1d5b24dfecb953a913bc77fdd1a4577
Bitcoin Core
Setup
Bitcoin Core is the original Bitcoin client and it builds the backbone of the network. It downloads and, by default, stores the entire history of Bitcoin transactions, which requires a few hundred gigabytes of disk space. Depending on the speed of your computer and network connection, the synchronization process can take anywhere from a few hours to a day or more.
To download Bitcoin Core, visit bitcoincore.org.
Running
The following are some helpful notes on how to run Bitcoin Core on your native platform.
Unix
Unpack the files into a directory and run:
bin/bitcoin-qt(GUI) orbin/bitcoind(headless)
Windows
Unpack the files into a directory, and then run bitcoin-qt.exe.
macOS
Drag Bitcoin Core to your applications folder, and then run Bitcoin Core.
Need Help?
- See the documentation at the Bitcoin Wiki for help and more information.
- Ask for help on #bitcoin on Freenode. If you don't have an IRC client, use webchat here.
- Ask for help on the BitcoinTalk forums, in the Technical Support board.
Building
The following are developer notes on how to build Bitcoin Core on your native platform. They are not complete guides, but include notes on the necessary libraries, compile flags, etc.
- Dependencies
- macOS Build Notes
- Unix Build Notes
- Windows Build Notes
- FreeBSD Build Notes
- OpenBSD Build Notes
- NetBSD Build Notes
- Gitian Building Guide (External Link)
Development
The Bitcoin repo's root README contains relevant information on the development process and automated testing.
- Developer Notes
- Productivity Notes
- Release Notes
- Release Process
- Source Code Documentation (External Link)
- Translation Process
- Translation Strings Policy
- JSON-RPC Interface
- Unauthenticated REST Interface
- Shared Libraries
- BIPS
- Dnsseed Policy
- Benchmarking
Resources
- Discuss on the BitcoinTalk forums, in the Development & Technical Discussion board.
- Discuss project-specific development on #bitcoin-core-dev on Freenode. If you don't have an IRC client, use webchat here.
- Discuss general Bitcoin development on #bitcoin-dev on Freenode. If you don't have an IRC client, use webchat here.
Miscellaneous
- Assets Attribution
- bitcoin.conf Configuration File
- Files
- Fuzz-testing
- Reduce Traffic
- Tor Support
- Init Scripts (systemd/upstart/openrc)
- ZMQ
- PSBT support
License
Distributed under the MIT software license. This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. This product includes cryptographic software written by Eric Young (eay@cryptsoft.com), and UPnP software written by Thomas Bernard.