This should be more robust in future: we SHA256 all of the deps.
For wiregen we prefix with EXPERIMENTAL_FEATURES, since it can effect them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Also, allow the pg_config binary to be specified through the PG_CONFIG
environment variable, defaulting to 'pg_config' if unset. Explicitly
setting PG_CONFIG to an empty string will forcibly disable PostgreSQL
support, even if a PostgreSQL library is installed.
Changelog-Fixed: build: On systems with multiple installed versions of the PostgreSQL client library, C-Lightning might link against the wrong version or fail to find the library entirely. `./configure` now uses `pg_config` to locate the library.
It's actually not possible to currently tell if you're using anchor_outputs
with a peer (since it depends on whether you both supported it at *channel open*).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-added: JSON-RPC: `listpeers` shows `features` list for each channel.
Using `waitblockheight 0` is a very slightly faster query than `getinfo`.
Also, avoid querying blockheight for child payments (allow `waitblockheight`
paymod to provide the blockheight returned from the `waitblockheight`, and
just resample the starting blockheight from the parent).
Changelog-None: pointless micro-optimization
This was checked with `gcc -S -O2` to see how an optimized build
would compile the function.
The original code completed calls into each child (and the `.s`
file showed that GCC 9.x was not smart enough to do early-out).
This modification explicitly does early-out, and avoids call-return
stack overhead for the common case where a payment is an ancestor
of a long line of single-child payments due to retrying.
Changelog-None: pointless micro-optimization
Fixes: #3608
Changelog-Changed: protocol: Ignore (and log as "unusual") repeated `WIRE_CHANNEL_REESTABLISH` messages, to be compatible with buggy peer software that sometimes does this.
Re-write start_ln such that we can create up to 10 nodes locally for
testing. Useful for scenarios where more than two nodes are needed
Changelog-Changed: contrib: startup_regtest.sh `startup_ln` now takes a number of nodes to create as a parameter
Changelog-Fixed: build: On some operating systems the postgresql library would not get picked up. `./configure` now uses `pg_config` to locate the headers.
The user supplies callbacks to do channel selection and comparison.
Note that this continues to map the entire network; not just to the
source, for use with random routing.
Benchmarks: (using current mainnet gossip store)
/devtools/route gossip-store-2020-07-27 all 03c981ed4ad15837f29a212dc8cf4b31f274105b7c95274a41449bf496ebd2fe10 | grep 'Time to find path'
With nothing (i.e. DEVELOPER build)
Averages 17ms
With -Og (i.e. standard non-DEVELOPER build)
Averages 14ms
With -O3 -flto:
Averages 4ms
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I went overboard on optimization. I am so sorry:
1. Squeezed channel min/max into 16 bits.
2. Uses mmap and leaves node_ids in the file.
3. Uses offsets instead of pointers where possible.
4. Uses custom free-list to allocate inside arrays.
5. Ignores our autogenerated marshalling code in favor of direct derefs.
6. Carefully aligns everything so we use minimal ram.
The result is that the current gossip_store:
- load time (-O3 -flto laptop): 40msec
- load time (-g laptop i.e. DEVELOPER=0): 60msec
- load time (-O0 laptop i.e. DEVELOPER=1): 110msec
- Total memory: 2.6MB:
- 1.5MB for the array of channels
- 512k for the channel htable to map scid -> channel.
- 320k for the node htable to map nodeid -> node.
- 192k for the array of channels inside each node
- 94k for the array of nodes
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We're failing this too often: we'd fail it more but it's disabled
with VALGRIND (it shouldn't be: @slow_test removes VALGRIND if SLOW_MACHINE
is set).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is the simplest possible fix: increase the target amount until we get
the desired number of parts, while still bucketizing payments together that
are in approximately the same size.
The current logic puts all payments that are in the range x < amount <= 16*x
in the same bucket, making them harder to distinguish.
Changelog-Fixed: pay: The `presplit` modifier now supports large payments without exhausting the available HTLCs.
We are logging way too much from gossipd, causing noisy logs. This PR reduces
logs for incoming messages to those that actually caused a change in our
internal state (duplicate and old messages are just dropped silently now).
Changelog-Changed: gossipd: The `gossipd` is now a lot quieter, and will log only when a message changed our network topology.
Rusty Russell
Christian Decker
Matt Whitlock
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