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to simplify the code and reach less from it into the CInv class internals
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78c312c983255e15fc274de2368a2ec13ce81cbf Replace current benchmarking framework with nanobench (Martin Ankerl)
Pull request description:
Replace current benchmarking framework with nanobench
This replaces the current benchmarking framework with nanobench [1], an
MIT licensed single-header benchmarking library, of which I am the
autor. This has in my opinion several advantages, especially on Linux:
* fast: Running all benchmarks takes ~6 seconds instead of 4m13s on
an Intel i7-8700 CPU @ 3.20GHz.
* accurate: I ran e.g. the benchmark for SipHash_32b 10 times and
calculate standard deviation / mean = coefficient of variation:
* 0.57% CV for old benchmarking framework
* 0.20% CV for nanobench
So the benchmark results with nanobench seem to vary less than with
the old framework.
* It automatically determines runtime based on clock precision, no need
to specify number of evaluations.
* measure instructions, cycles, branches, instructions per cycle,
branch misses (only Linux, when performance counters are available)
* output in markdown table format.
* Warn about unstable environment (frequency scaling, turbo, ...)
* For better profiling, it is possible to set the environment variable
NANOBENCH_ENDLESS to force endless running of a particular benchmark
without the need to recompile. This makes it to e.g. run "perf top"
and look at hotspots.
Here is an example copy & pasted from the terminal output:
| ns/byte | byte/s | err% | ins/byte | cyc/byte | IPC | bra/byte | miss% | total | benchmark
|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|---------------:|--------:|----------:|:----------
| 2.52 | 396,529,415.94 | 0.6% | 25.42 | 8.02 | 3.169 | 0.06 | 0.0% | 0.03 | `bench/crypto_hash.cpp RIPEMD160`
| 1.87 | 535,161,444.83 | 0.3% | 21.36 | 5.95 | 3.589 | 0.06 | 0.0% | 0.02 | `bench/crypto_hash.cpp SHA1`
| 3.22 | 310,344,174.79 | 1.1% | 36.80 | 10.22 | 3.601 | 0.09 | 0.0% | 0.04 | `bench/crypto_hash.cpp SHA256`
| 2.01 | 496,375,796.23 | 0.0% | 18.72 | 6.43 | 2.911 | 0.01 | 1.0% | 0.00 | `bench/crypto_hash.cpp SHA256D64_1024`
| 7.23 | 138,263,519.35 | 0.1% | 82.66 | 23.11 | 3.577 | 1.63 | 0.1% | 0.00 | `bench/crypto_hash.cpp SHA256_32b`
| 3.04 | 328,780,166.40 | 0.3% | 35.82 | 9.69 | 3.696 | 0.03 | 0.0% | 0.03 | `bench/crypto_hash.cpp SHA512`
[1] https://github.com/martinus/nanobench
ACKs for top commit:
laanwj:
ACK 78c312c983255e15fc274de2368a2ec13ce81cbf
Tree-SHA512: 9e18770b18b6f95a7d0105a4a5497d31cf4eb5efe6574f4482f6f1b4c88d7e0946b9a4a1e9e8e6ecbf41a3f2d7571240677dcb45af29a6f0584e89b25f32e49e
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This replaces the current benchmarking framework with nanobench [1], an
MIT licensed single-header benchmarking library, of which I am the
autor. This has in my opinion several advantages, especially on Linux:
* fast: Running all benchmarks takes ~6 seconds instead of 4m13s on
an Intel i7-8700 CPU @ 3.20GHz.
* accurate: I ran e.g. the benchmark for SipHash_32b 10 times and
calculate standard deviation / mean = coefficient of variation:
* 0.57% CV for old benchmarking framework
* 0.20% CV for nanobench
So the benchmark results with nanobench seem to vary less than with
the old framework.
* It automatically determines runtime based on clock precision, no need
to specify number of evaluations.
* measure instructions, cycles, branches, instructions per cycle,
branch misses (only Linux, when performance counters are available)
* output in markdown table format.
* Warn about unstable environment (frequency scaling, turbo, ...)
* For better profiling, it is possible to set the environment variable
NANOBENCH_ENDLESS to force endless running of a particular benchmark
without the need to recompile. This makes it to e.g. run "perf top"
and look at hotspots.
Here is an example copy & pasted from the terminal output:
| ns/byte | byte/s | err% | ins/byte | cyc/byte | IPC | bra/byte | miss% | total | benchmark
|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|---------------:|--------:|----------:|:----------
| 2.52 | 396,529,415.94 | 0.6% | 25.42 | 8.02 | 3.169 | 0.06 | 0.0% | 0.03 | `bench/crypto_hash.cpp RIPEMD160`
| 1.87 | 535,161,444.83 | 0.3% | 21.36 | 5.95 | 3.589 | 0.06 | 0.0% | 0.02 | `bench/crypto_hash.cpp SHA1`
| 3.22 | 310,344,174.79 | 1.1% | 36.80 | 10.22 | 3.601 | 0.09 | 0.0% | 0.04 | `bench/crypto_hash.cpp SHA256`
| 2.01 | 496,375,796.23 | 0.0% | 18.72 | 6.43 | 2.911 | 0.01 | 1.0% | 0.00 | `bench/crypto_hash.cpp SHA256D64_1024`
| 7.23 | 138,263,519.35 | 0.1% | 82.66 | 23.11 | 3.577 | 1.63 | 0.1% | 0.00 | `bench/crypto_hash.cpp SHA256_32b`
| 3.04 | 328,780,166.40 | 0.3% | 35.82 | 9.69 | 3.696 | 0.03 | 0.0% | 0.03 | `bench/crypto_hash.cpp SHA512`
[1] https://github.com/martinus/nanobench
* Adds support for asymptotes
This adds support to calculate asymptotic complexity of a benchmark.
This is similar to #17375, but currently only one asymptote is
supported, and I have added support in the benchmark `ComplexMemPool`
as an example.
Usage is e.g. like this:
```
./bench_bitcoin -filter=ComplexMemPool -asymptote=25,50,100,200,400,600,800
```
This runs the benchmark `ComplexMemPool` several times but with
different complexityN settings. The benchmark can extract that number
and use it accordingly. Here, it's used for `childTxs`. The output is
this:
| complexityN | ns/op | op/s | err% | ins/op | cyc/op | IPC | total | benchmark
|------------:|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|----------:|:----------
| 25 | 1,064,241.00 | 939.64 | 1.4% | 3,960,279.00 | 2,829,708.00 | 1.400 | 0.01 | `ComplexMemPool`
| 50 | 1,579,530.00 | 633.10 | 1.0% | 6,231,810.00 | 4,412,674.00 | 1.412 | 0.02 | `ComplexMemPool`
| 100 | 4,022,774.00 | 248.58 | 0.6% | 16,544,406.00 | 11,889,535.00 | 1.392 | 0.04 | `ComplexMemPool`
| 200 | 15,390,986.00 | 64.97 | 0.2% | 63,904,254.00 | 47,731,705.00 | 1.339 | 0.17 | `ComplexMemPool`
| 400 | 69,394,711.00 | 14.41 | 0.1% | 272,602,461.00 | 219,014,691.00 | 1.245 | 0.76 | `ComplexMemPool`
| 600 | 168,977,165.00 | 5.92 | 0.1% | 639,108,082.00 | 535,316,887.00 | 1.194 | 1.86 | `ComplexMemPool`
| 800 | 310,109,077.00 | 3.22 | 0.1% |1,149,134,246.00 | 984,620,812.00 | 1.167 | 3.41 | `ComplexMemPool`
| coefficient | err% | complexity
|--------------:|-------:|------------
| 4.78486e-07 | 4.5% | O(n^2)
| 6.38557e-10 | 21.7% | O(n^3)
| 3.42338e-05 | 38.0% | O(n log n)
| 0.000313914 | 46.9% | O(n)
| 0.0129823 | 114.4% | O(log n)
| 0.0815055 | 133.8% | O(1)
The best fitting curve is O(n^2), so the algorithm seems to scale
quadratic with `childTxs` in the range 25 to 800.
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74507ce71eb61105fb3ae8460999099234ca7b8b walletdb: Remove BerkeleyBatch friend class from BerkeleyDatabase (Andrew Chow)
00f0041351bcd6ddbab110df1189f79ce011e192 No need to check for duplicate fileids in all dbenvs (Andrew Chow)
d86efab37002841fd059251672e1ec1a977b743f walletdb: Move Db->open to BerkeleyDatabase::Open (Andrew Chow)
4fe4b3bf1b152877677a6115f82aefaf318dd514 walletdb: track database file use as m_refcount within BerkeleyDatabase (Andrew Chow)
65fb8807ac402d1e924fd85969b5837c192bf59f Combine BerkeleyEnvironment::Verify into BerkeleyDatabase::Verify (Andrew Chow)
Pull request description:
`BerkeleyBatch` and `BerkeleyDatabase` are kind of messy. The goal of this is to clean up them up so that they are logically separated.
`BerkeleyBatch` currently handles the creation of the `BerkeleyDatabase`'s `Db` handle. This is instead moved into `BerkeleyDatabase` and is called by `BerkeleyBatch`.
Instead of having `BerkeleyEnvironment` track each database's usage, have `BerkeleyDatabase` track this usage itself with the `m_refcount` variable that is present in `WalletDatabase`.
Lastly, instead of having each `BerkeleyEnvironment` store the fileids of the databases open in it, have a global `g_fileids` to track those fileids. We were already checking fileid uniqueness globally (by checking the fileids in every environment when opening a database) so it's cleaner to do this with a global variable.
All of these changes allow us to make `BerkeleyBatch` and `BerkeleyDatabase` no longer be friend classes.
The diff of this PR is currently the same as in ##18971
Requires #19334
ACKs for top commit:
laanwj:
Code review ACK 74507ce71eb61105fb3ae8460999099234ca7b8b
ryanofsky:
Code review ACK 74507ce71eb61105fb3ae8460999099234ca7b8b. No changes since last review other than rebase
Tree-SHA512: 845d84ee1a470e2bf5d2e2e3d7738183d8ce43ddd06a0bbd57edecf5779b2f55d70728b1b57f5daab0f078650a8d60c3e19dc30b75b36e7aa952ce268399d5f6
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Since we have .walletlock in each directory, we don't need the duplicate
fileid checks across all dbenvs as it shouldn't be possible anyways.
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Instead of opening the Db handle in BerkeleyBatch, make BerkeleyDatabase
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Instead of having BerkeleyEnvironment track the file use count, make
BerkeleyDatabase do it itself.
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bcfebb6d5511ad4c156868bc799831ace628a225 net: save the network type explicitly in CNetAddr (Vasil Dimov)
100c64a95b518a6a19241aec4058b866a8872d9b net: document `enum Network` (Vasil Dimov)
Pull request description:
(chopped off from https://github.com/bitcoin/bitcoin/pull/19031 to ease review)
Before this change, we would analyze the contents of `CNetAddr::ip[16]`
in order to tell which type is an address. Change this by introducing a
new member `CNetAddr::m_net` that explicitly tells the type of the
address.
This is necessary because in BIP155 we will not be able to tell the
address type by just looking at its raw representation (e.g. both TORv3
and I2P are "seemingly random" 32 bytes).
As a side effect of this change we no longer need to store IPv4
addresses encoded as IPv6 addresses - we can store them in proper 4
bytes (will be done in a separate commit). Also the code gets
somewhat simplified - instead of
`memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0` we can use
`m_net == NET_IPV4`.
ACKs for top commit:
troygiorshev:
reACK bcfebb6d5511ad4c156868bc799831ace628a225 via `git range-diff master 64897c5 bcfebb6`
jonatack:
re-ACK bcfebb6 per `git diff 662bb25 bcfebb6`, code review, debug build/tests clean, ran bitcoind.
laanwj:
Code review ACK bcfebb6d5511ad4c156868bc799831ace628a225
Tree-SHA512: 9347e2a50feac617a994bfb46a8f77e31c236bde882e4fd4f03eea4766cd5110216f5f3d24dee91d25218bab7f8bb6e1d2d6212a44db9e34594299fd6ff7606b
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Before this change, we would analyze the contents of `CNetAddr::ip[16]`
in order to tell which type is an address. Change this by introducing a
new member `CNetAddr::m_net` that explicitly tells the type of the
address.
This is necessary because in BIP155 we will not be able to tell the
address type by just looking at its raw representation (e.g. both TORv3
and I2P are "seemingly random" 32 bytes).
As a side effect of this change we no longer need to store IPv4
addresses encoded as IPv6 addresses - we can store them in proper 4
bytes (will be done in a separate commit). Also the code gets
somewhat simplified - instead of
`memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0` we can use
`m_net == NET_IPV4`.
Co-authored-by: Carl Dong <[email protected]>
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f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4 test: add test for CChainState::ResizeCoinsCaches() (James O'Beirne)
8ac3ef46999ed676ca3775f7b2f461d92f09a542 add ChainstateManager::MaybeRebalanceCaches() (James O'Beirne)
f36aaa6392fdbdac6891d92202d3efeff98754f4 Add CChainState::ResizeCoinsCaches (James O'Beirne)
b223111da2e0e9ceccef75df8a20252b0094b7bc txdb: add CCoinsViewDB::ChangeCacheSize (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11):
Parent PR: #15606
Issue: #15605
Specification: https://github.com/jamesob/assumeutxo-docs/tree/master/proposal
---
In the assumeutxo implementation draft (#15056), once a UTXO snapshot is loaded, a new chainstate object is created after initialization. This means that we have to reclaim some of the cache that we've allocated to the original chainstate (per `dbcache=`) to repurpose for the snapshot chainstate.
Furthermore, it makes sense to have different cache allocations depending on which chainstate is more active. While the snapshot chainstate is working to get to the network tip (and the background validation chainstate is idle), it makes sense that the snapshot chainstate should have the majority of cache allocation. And contrariwise once the snapshot has reached network tip, most of the cache should be given to the background validation chainstate.
This set of changes (detailed in the commit messages) allows us to dynamically resize the various coins caches. None of the functionality introduced here is used at the moment, but will be in the next AU PR (which introduces `ActivateSnapshot`).
`ChainstateManager::MaybeRebalanceCaches()` defines the (somewhat normative) cache allocations between the snapshot and background validation chainstates. I'd be interested in feedback if anyone has thoughts on the proportions I've set there.
ACKs for top commit:
ajtowns:
weak utACK f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4 -- didn't find any major problems, but not super confident that I didn't miss anything
fjahr:
Code review ACK f19fdd4
ryanofsky:
Code review ACK f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4. Only change since last review is constructor cleanup (no change in behavior). I think the suggestions here from ajtowns and others are good, but shouldn't delay merging the PR (and hold up assumeutxo)
Tree-SHA512: fffb7847fb6993dd4a1a41cf11179b211b0b20b7eb5f7cf6266442136bfe9d43b830bbefcafd475bfd4af273f5573500594aa41fff03e0ed5c2a1e8562ff9269
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Aside from in unittests, this method is unused at the moment. It will be used
in upcoming commits that enable utxo snapshot activation.
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Also adds CCoinsViewCache::ReallocateCache() to attempt to free
memory that the cacheCoins's allocator may be hanging onto when
downsizing the cache.
Adds `CChainState::m_coins{tip,db}_cache_size_bytes` data members
so that we can reference cache size on a per-chainstate basis for
flushing.
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We'll need this to dynamically update the cache size of the existing
CCoinsViewDB instance when we create a new one during snapshot activation.
This requires us to keep the CDBWrapper instance as a pointer instead of
a reference so that we're able to destruct it and create a new instance
when the cache size changes.
Also renames `db` to `m_db` since we're already modifying each usage.
Includes feedback from Russ Yanofsky.
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a8865f8b7215a975fd3dd9d97d7f791ac93ea65d [net processing] Tidy up Misbehaving() (John Newbery)
d15b3afb4cd1b00ad698e6dd19c5861a53e01c42 [net processing] Always supply debug message to Misbehaving() (John Newbery)
634144a1c2a3506fd6285e76f3ce0cbb3648cc69 [net processing] Fixup MaybeDiscourageAndDisconnect() style (John Newbery)
Pull request description:
This PR makes a few minor clean-ups to `Misbehaving()` in preparation to move it out of the cs_main lock.
There are very minor logging changes but otherwise no functional changes.
ACKs for top commit:
troygiorshev:
tACK a8865f8b7215a975fd3dd9d97d7f791ac93ea65d
jonatack:
ACK a8865f8
fjahr:
Code review ACK a8865f8b7215a975fd3dd9d97d7f791ac93ea65d
promag:
Code review ACK a8865f8b7215a975fd3dd9d97d7f791ac93ea65d.
Tree-SHA512: 98fb4f5f76399715545a1ea19290dcebfc8cb4eff72a1d3555dd3de6e184040bb8668c9651dab21db0dfd8e674e53a5977105ef76547146c9f6fa6b4b9d2ba59
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- Make const things const.
- Replace conditional return with assert.
- Don't log the peer's IP address.
- Log the name Misbehaving directly instead of relying on __func__.
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Misbehaving() could optionally take a debug string for printing to the
log file. Make this mandatory and always provide the string.
A couple of additional minor changes:
- remove the unnecessary forward declaration of Misbehaving()
- don't include the nodeid or newline in the passed debug message.
Misbehaving() adds these itself.
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Based on review comments from Marco Falke and Jon Atack.
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fa5979d12f8c65754e36cdddb9d032ab81fecc3a rpc: Avoid useless mempool query in gettxoutproof (MarcoFalke)
fa1f7f28cbc48675514a01c4ca773f1ba8ea836b rpc: Style fixups in gettxoutproof (MarcoFalke)
Pull request description:
`GetTransaction` implicitly and unconditionally asks the mempool global for a transaction. This is problematic for several reasons:
* `gettxoutproof` is for on-chain txs only and asking the mempool for on-chain txs is confusing and minimally wasteful
* Globals are confusing and make code harder to test with unit tests
Fix both issues by passing in an optional mempool. This also helps with #19556
ACKs for top commit:
hebasto:
re-ACK fa5979d12f8c65754e36cdddb9d032ab81fecc3a
jnewbery:
utACK fa5979d12f8c65754e36cdddb9d032ab81fecc3a
promag:
Code review ACK fa5979d12f8c65754e36cdddb9d032ab81fecc3a.
Tree-SHA512: 048361b82abfcc40481181bd44f70cfc9e97d5d6356549df34bbe30b9de7a0a72d2207a3ad0279b21f06293509b284d8967f58ca7e716263a22b20aa4e7f9c54
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fa2ae0ac8d43086430a29c73940ad6b1cd129e96 span: Add Span::empty() and use it in script/descriptor (MarcoFalke)
fa8a99258947a9ee3749fa472180542920cd471c Work around memory-aliasing in descriptor ParsePubkey (MarcoFalke)
Pull request description:
While this is not undefined behaviour, the memory aliasing trick is confusing when reading the code. Having `a.size()==0` and then access `a[0]` works in this particular case, but should probably be avoided to harden the code for the future.
ACKs for top commit:
theStack:
re-ACK https://github.com/bitcoin/bitcoin/pull/19508/commits/fa2ae0ac8d43086430a29c73940ad6b1cd129e96
elichai:
ACK fa2ae0ac8d43086430a29c73940ad6b1cd129e96
jonatack:
ACK fa2ae0ac8d43086430a29c73940ad6b1cd129e96
Tree-SHA512: 0ec7b09eef45504973a195923cdf1aa8522117c8e2f69b453e5ce9aa8a7e327c71138518022c32d05133dc99cb861101ed0f60fa891814ee3e9dab3a6fa61a84
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MaybeDiscourageAndDisconnect()
655b1957470c39bcab64917747c9f467444bd809 [net processing] Continue SendMessages processing if not disconnecting peer (John Newbery)
a49781e56d2bd6a61ec027a09c1db9ee1a4abf2e [net processing] Only call MaybeDiscourageAndDisconnect from SendMessages (John Newbery)
a1d5a428a24afe4f600be29e9d0d3bb4c720e816 [net processing] Fix bad indentation in SendMessages() (John Newbery)
1a1c23f8d40116741f0e26cdf22688fd91c923fc [net processing] Change cs_main TRY_LOCK to LOCK in SendMessages() (John Newbery)
Pull request description:
The motivation for this PR is to reduce the scope of cs_main locking in misbehavior logic. It is the first set of commits from a larger branch to move the misbehavior data out of CNodeState and into a new struct that doesn't take cs_main.
There are some very minor behavior changes in this branch, such as:
- Not checking for discouragement/disconnect in `ProcessMessages()` (and instead relying on the following check in `SendMessages()`)
- Checking for discouragement/disconnect as the first action in `SendMessages()` (and not doing ping message sending first)
- Continuing through `SendMessages()` if `MaybeDiscourageAndDisconnect()` doesn't disconnect the peer (rather than dropping out of `SendMessages()`
ACKs for top commit:
jonatack:
re-ACK 655b195 per `git range-diff 505b4ed f54af5e 655b195`, code/commit messages review, a bit of code history, and debug build.
MarcoFalke:
ACK 655b195747 only some style-nits 🚁
promag:
Code review ACK 655b1957470c39bcab64917747c9f467444bd809.
ariard:
Code Review ACK 655b195
Tree-SHA512: fd6d7bc6bb789f5fb7771fb6a45f61a8faba32af93b766554f562144f9631d15c9cc849a383e71743ef73e610b4ee14853666f6fbf08a3ae35176d48c76c65d3
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If we don't disconnect a peer in MaybeDiscourageAndDisconnect because it
has NOBAN permissions or it's a manual connection, continue SendMessages
processing rather than exiting early.
The previous behaviour was that we'd miss the SendMessages processing on
this iteration of the MessageHandler loop. That's not a problem since
SendMessages() would just be called again on the next iteration, but it
was slightly inefficient and confusing.
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`nMisbehavior` is a tally in `CNodeState` that can be incremented from
anywhere. That almost always happens inside a `ProcessMessages()` call
(because we increment the misbehavior score when receiving a bad
messages from a peer), but not always. See, for example, the call to
`MaybePunishNodeForBlock()` inside `BlockChecked()`, which is an
asynchronous callback from the validation interface, executed on the
scheduler thread.
As long as `MaybeDiscourageAndDisconnect()` is called regularly for the
node, then the misbehavior score exceeding the 100 threshold will
eventually result in the peer being punished. It doesn't really matter
where that `MaybeDiscourageAndDisconnect()` happens, but it makes most
sense in `SendMessages()` which is where we do general peer
housekeeping/maintenance.
Therefore, remove the `MaybeDiscourageAndDisconnect()` call in
`ProcessMessages()` and move the `MaybeDiscourageAndDisconnect()` call
in `SendMessages()` to the top of the function. This moves it out of the
cs_main lock scope, so take that lock directly inside
`MaybeDiscourageAndDisconnect()`.
Historic note: `MaybeDiscourageAndDisconnect()` was previously
`SendRejectsAndCheckIfBanned()`, and before that was just sending
rejects. All of those things required cs_main, which is why
`MaybeDiscourageAndDisconnect()` was called after the ping logic.
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Hint for reviewers: review ignoring whitespace changes.
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This was changed to TRY_LOCK in #1117 to fix a potential deadlock
between cs_main and cs_vSend. cs_vSend was split into cs_vSend and
cs_sendProcessing in #9535 (and cs_sendProcessing was changed from a
TRY_LOCK to a LOCK in the same PR).
Since cs_vSend can no longer be taken before cs_main, revert this to a
LOCK().
This commit leaves part of the code with bad indentation. That is fixed
by the next (whitespace change only) commit.
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9c69cfe4c54e38edd2f54303be2f8a53dcf5bad8 Add <datadir>/settings.json persistent settings storage. (Russell Yanofsky)
eb682c5700e7a9176d0104d470b83ff9aa3589e8 util: Add ReadSettings and WriteSettings functions (Russell Yanofsky)
Pull request description:
Persistent settings are used in followup PRs #15936 to unify gui settings between bitcoin-qt and bitcoind, and #15937 to add a load_on_startup flag to the loadwallet RPC and maintain a dynamic list of wallets that should be loaded on startup that also can be shared between bitcoind and bitcoin-qt.
ACKs for top commit:
MarcoFalke:
Approach re-ACK 9c69cfe4c54e38edd2f54303be2f8a53dcf5bad8 🌾
jnewbery:
utACK 9c69cfe4c54e38edd2f54303be2f8a53dcf5bad8
Tree-SHA512: 39fcc6051717117c9141e934de1d0d3f739484be4685cdf97d54de967c8c816502b4fd0de12114433beaa5c5b7060c810fd8ae4e2b3ce7c371eb729ac01ba2e1
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Persistent settings are used in followup PRs #15936 to unify gui settings
between bitcoin-qt and bitcoind, and #15937 to add a load_on_startup flag to
the loadwallet RPC and maintain a dynamic list of wallets that should be loaded
on startup that also can be shared between bitcoind and bitcoin-qt.
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Currently unused, but includes tests.
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2aac093a3d60e446b85eebdf170ea6bed77bec92 test: Add test coverage for -networkactive option (Hennadii Stepanov)
3c58129b1293742a49aa196cb210ff345a7339e6 net: Log network activity status change unconditionally (Hennadii Stepanov)
62fe6aa87e4cdd8b06207abc1387c68d7bfc04c1 net: Add -networkactive option (Hennadii Stepanov)
Pull request description:
Some Bitcoin Core activity is completely local (offline), e.g., reindexing.
The `setnetworkactive` RPC command is already present. This PR adds the corresponding command-line argument / config option, and allows to start the client with disabled p2p network by providing `-networkactive=0` or `-nonetworkactive`.
This was done while reviewing #16981.
ACKs for top commit:
MarcoFalke:
re-ACK 2aac093a3d60e446b85eebdf170ea6bed77bec92 🏠
LarryRuane:
ACK 2aac093a3d60e446b85eebdf170ea6bed77bec92
Tree-SHA512: 446d791b46d7b556d7694df7b1f88cd4fbc09301fe4eaf036b45cb8166ed806156353cc03788a07b633d5887d5eee30a7c02a2d4307141c8ccc75e0a88145636
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The `setnetworkactive' RPC command is already present.
This new option allows to start the client with disabled p2p network
activity for testing or reindexing.
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d416ae560e46a4846a3fd5990b7d390d2ef30ec8 walletdb: Introduce WalletDatabase abstract class (Andrew Chow)
2179dbcbcd0b9bef7ad9c907b85294b9a1bccf0f walletdb: Add BerkeleyDatabase::Open dummy function (Andrew Chow)
71d28e7cdca1c8553531bb3a4725d7916363ec5c walletdb: Introduce AddRef and RemoveRef functions (Andrew Chow)
27b27663849932971eb5deadb1f19234b9cd97ea walletdb: Move BerkeleyDatabase::Flush(true) to Close() (Andrew Chow)
Pull request description:
A `WalletDatabase` abstract class is created from `BerkeleyDatabase` and is implemented by `BerkeleyDatabase`. First, to get to the point that this is possible, 4 functions need to be added to `BerkeleyDatabase`: `AddRef`, `RemoveRef`, `Open`, and `Close`.
First the increment and decrement of `mapFileUseCount` is refactored into separate functions `AddRef` and `RemoveRef`.
`Open` is introduced as a dummy function. This will raise an exception so that it always fails.
`Close` is refactored from `Flush`. The `shutdown` argument in `Flush` is removed and instead `Flush(true)` is now the `Close` function.
Split from #18971
Requires #19325
ACKs for top commit:
ryanofsky:
Code review ACK d416ae560e46a4846a3fd5990b7d390d2ef30ec8. Only changes since last review were rebasing after base PR #19334 merge, and adding cs_db lock in BerkeleyDatabase destructor, which should avoid races accessing env->m_databases and env->m_fileids
fjahr:
Code review ACK d416ae560e46a4846a3fd5990b7d390d2ef30ec8
meshcollider:
Code review & test run ACK d416ae560e46a4846a3fd5990b7d390d2ef30ec8
Tree-SHA512: 98d05ec093d7446c4488e2b0914584222a331e9a2f4d5be6af98e3f6d78fdd8e75526c12f91a8a52d4820c25bce02aa02aabe92d38bee7eb2fce07d0691b7b0d
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Make WalletDatabase actually an abstract class and not just a typedef
for BerkeleyDatabase. Have BerkeleyDatabase inherit this class.
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Adds an Open function for the class abstraction that does nothing for
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Refactor mapFileUseCount increment and decrement to separate functions
AddRef and RemoveRef
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Instead of having Flush optionally shutdown the database and
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0a4f1422cd1c20e12a05d7ff1a2ef1d5e7c654bb Further improve comments around recentRejects (Suhas Daftuar)
0e20cfedb704c1f76bb727e2009867d3d503a03d Disconnect peers sending wtxidrelay message after VERACK (Suhas Daftuar)
cacd85209e20fc0fd08f86eed23b6ef93484ffcf test: Use wtxid relay generally in functional tests (Fabian Jahr)
8d8099e97ab8af2126f6fbd223fbd82c52f2e85e test: Add tests for wtxid tx relay in segwit test (Fabian Jahr)
9a5392fdf67f1c5c90f52d3cdb3dea4f35d1609f test: Update test framework p2p protocol version to 70016 (Fabian Jahr)
dd78d1d641178b473ab1156b71a837b9e686792b Rename AddInventoryKnown() to AddKnownTx() (Suhas Daftuar)
4eb515574e1012bc8ea5dafc3042dcdf4c766f26 Make TX_WITNESS_STRIPPED its own rejection reason (Suhas Daftuar)
97141ca442daea8fc9c307cf81a02b38dcc28fd8 Delay getdata requests from peers using txid-based relay (Suhas Daftuar)
46d78d47dea345329ba094310eec56ab00a02ddc Add p2p message "wtxidrelay" (Suhas Daftuar)
2d282e0cba9761574b6b43d134ca95f3052d7fd2 ignore non-wtxidrelay compliant invs (Anthony Towns)
ac88e2eb619821ad7ae1d45d4b40be69051d3999 Add support for tx-relay via wtxid (Suhas Daftuar)
8e68fc246d09f1e6c6dfa8c676969d97c2eb4334 Add wtxids to recentRejects instead of txids (Suhas Daftuar)
144c38582042c3b9ec53bb97ba0644fc0114f8fb Add wtxids of confirmed transactions to bloom filter (Suhas Daftuar)
85c78d54af462996a0bca6cf97f91e1aa8778ae8 Add wtxid-index to orphan map (Suhas Daftuar)
08b39955ec7f84e835ab0b1366f0dd28dfd6ce03 Add a wtxid-index to mapRelay (Suhas Daftuar)
60f0acda713e7b9dc188aef54ef93981a93f4e44 Just pass a hash to AddInventoryKnown (Suhas Daftuar)
c7eb6b4f1fe5bd76388a023529977674534334a7 Add wtxid to mempool unbroadcast tracking (Amiti Uttarwar)
2b4b90aa8f0440deacefb5997d7bd1f9f5c591b3 Add a wtxid-index to the mempool (Suhas Daftuar)
Pull request description:
Using txids (a transaction's hash, without witness) for transaction relay is problematic, post-segwit -- if a peer gives us a segwit transaction that fails policy checks, it could be because the txid associated with the transaction is definitely unacceptable to our node (regardless of the witness), or it could be that the transaction was malleated and with a different witness, the txid could be accepted to our mempool.
We have a bloom filter of recently rejected transactions, whose purpose is to help us avoid redownloading and revalidating transactions that fail to be accepted, but because of this potential for witness malleability to interfere with relay of valid transactions, we do not use the filter for segwit transactions. This issue is discussed at some length in #8279. The effect of this is that whenever a segwit transaction that fails policy checks is relayed, a node would download that transaction from every peer announcing it, because it has no way presently to cache failure. Historically this hasn't been a big problem, but if/when policy for accepting segwit transactions were to change (eg taproot, or any other change), we could expect older nodes talking to newer nodes to be wasting bandwidth because of this.
As discussed in that issue, switching to wtxid-based relay solves this problem -- by using an identifier for a transaction that commits to all the data in our relay protocol, we can be certain if a transaction that a peer is announcing is one that we've already tried to process, or if it's something new. This PR introduces support for wtxid-based relay with peers that support it (and remains backwards compatible with peers that use txids for relay, of course).
Apart from code correctness, one issue to be aware of is that by downloading from old and new peers alike, we should expect there to be some bandwidth wasted, because sometimes we might download the same transaction via txid-relay as well as wtxid-relay. The last commit in this PR implements a heuristic I want to analyze, which is to just delay relay from txid-relay peers by 2 seconds, if we have at least 1 wtxid-based peer. I've just started running a couple nodes with this heuristic so I can measure how well it works, but I'm open to other ideas for minimizing that issue. In the long run, I think this will be essentially a non-issue, so I don't think it's too big a concern, we just need to bite the bullet and deal with it during upgrade.
Finally, this proposal would need a simple BIP describing the changes, which I haven't yet drafted. However, review and testing of this code in the interim would be welcome.
To do items:
- [x] Write BIP explaining the spec here (1 new p2p message for negotiating wtxid-based relay, along with a new INV type)
- [ ] Measure and evaluate a heuristic for minimizing how often a node downloads the same transaction twice, when connected to old and new nodes.
ACKs for top commit:
naumenkogs:
utACK 0a4f1422cd1c20e12a05d7ff1a2ef1d5e7c654bb
laanwj:
utACK 0a4f1422cd1c20e12a05d7ff1a2ef1d5e7c654bb
Tree-SHA512: d8eb8f0688cf0cbe9507bf738e143edab1f595551fdfeddc2b6734686ea26e7f156b6bfde38bad8bbbe8bec1857c7223e1687f8f018de7463dde8ecaa8f450df
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Previously, TX_WITNESS_MUTATED could be returned during transaction validation
for either transactions that had a witness that was non-standard, or for
transactions that had no witness but were invalid due to segwit validation
rules.
However, for txid/wtxid-relay considerations, net_processing distinguishes the
witness stripped case separately, because it affects whether a wtxid should be
able to be added to the reject filter. It is safe to add the wtxid of a
witness-mutated transaction to the filter (as that wtxid shouldn't collide with
the txid, and hence it wouldn't interfere with transaction relay from
txid-relay peers), but it is not safe to add the wtxid (== txid) of a
witness-stripped transaction to the filter, because that would interfere with
relay of another transaction with the same txid (but different wtxid) when
relaying from txid-relay peers.
Also updates the comment explaining this logic, and explaining that we can get
rid of this complexity once there's a sufficient deployment of wtxid-relaying
peers on the network.
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