Commit graph

7 commits

Author SHA1 Message Date
Roy Lee
45627c7a6a [lbry] rename btcd to lbcd
Co-authored-by: Brannon King <countprimes@gmail.com>
2022-05-23 23:53:30 -07:00
eugene
f5a1fb9965 mempool: export isDust for use in other projects
This changes isDust to IsDust so other golang projects (btcwallet
or lnd) can use the precise dust calculation used by btcd.
2021-08-03 09:34:49 -04:00
Olaoluwa Osuntokun
26ff8ddce4 mempool: modify mempool sanity checks to be segwit aware 2017-08-13 23:17:40 -05:00
Dave Collins
760c5299c7
mempool: Modify default orphan tx policy.
The current max orphan transaction size causes problems with dependent
transaction relay due to its artificially small size in relation to the
max standard transaction size.

Consequently, this modifies the orphan transaction policy by increasing
the max size of each orphan to the same value allowed for standard
non-orphan transactions and reducing the default max allowed number of
orphans to 100.

From a memory usage standpoint, the worst case max mem usage prior to
this change was 5MB plus structure and tracking overhead (1000 max
orphans * 5KB max each).  With this, that is raised to 10MB (100 max
orphans * 100KB max each) in the worst case.

It is important to note that the values were originally implemented as a
naive means to control the size of the orphan pool before several of the
recent enhancements which more aggressively remove orphans from the
orphan pool were added, so they needed to be evaluated again.

For a very long time prior to recent changes, the orphan pool would
quickly reach the max allowed worst-case usage and effectively stay
there forever whereas with more recent changes, the actual run-time
orphan pool usage is usually much smaller.

Finally, as another point in favor of this change, as the network has
evolved, nodes have generally become better about orphan management and
as such missing ancestors will typically either be broadcast or mined
fairly quickly resulting in fewer overall orphans.
2016-10-28 15:41:59 -05:00
Olaoluwa Osuntokun
e3eeb4a34a
mempool: add policy config option for transaction version
This commit adds a new option to the mempool’s policy configuration
which determines which transaction versions should be accepted as
standard.

The default version set by the policy within the server is 2; this
allows accepting transactions which have version 2 enabled in order to
utilize the new sequence locks feature.
2016-10-26 21:49:14 -07:00
Olaoluwa Osuntokun
e7caccc866
mempool: transaction finality checks now use median-time-past
This coincides with the mempool only, policy change which enforces
transaction finality according to the median-time-past rather than
blockheader timestamps. The behavior is pre-cursor to full blown BIP
113 consensus deployment, and subsequent activation.

As a result, the TimeSource field in the mempoolConfig is no longer
needed so it has been removed. Additionally, checkTransactionStandard has been
modified to instead take a time.Time as the mempool is no longer explicitly
dependant on a Chain instance.
2016-10-19 11:13:34 -07:00
Dave Collins
7fac099bee mempool: Refactor mempool code to its own package. (#737)
This does the minimum work necessary to refactor the mempool code into
its own package.  The idea is that separating this code into its own
package will greatly improve its testability, allow independent
benchmarking and profiling, and open up some interesting opportunities
for future development related to the memory pool.

There are likely some areas related to policy that could be further
refactored, however it is better to do that in future commits in order
to keep the changeset as small as possible during this refactor.

Overview of the major changes:

- Create the new package
- Move several files into the new package:
  - mempool.go -> mempool/mempool.go
  - mempoolerror.go -> mempool/error.go
  - policy.go -> mempool/policy.go
  - policy_test.go -> mempool/policy_test.go
- Update mempool logging to use the new mempool package logger
- Rename mempoolPolicy to Policy (so it's now mempool.Policy)
- Rename mempoolConfig to Config (so it's now mempool.Config)
- Rename mempoolTxDesc to TxDesc (so it's now mempool.TxDesc)
- Rename txMemPool to TxPool (so it's now mempool.TxPool)
- Move defaultBlockPrioritySize to the new package and export it
- Export DefaultMinRelayTxFee from the mempool package
- Export the CalcPriority function from the mempool package
- Introduce a new RawMempoolVerbose function on the TxPool and update
  the RPC server to use it
- Update all references to the mempool to use the package.
- Add a skeleton README.md
2016-08-19 11:08:37 -05:00
Renamed from policy_test.go (Browse further)