Commit Graph

9 Commits

Author SHA1 Message Date
Alex Morcos b649e03954 Create new BlockPolicyEstimator for fee estimates
This class groups transactions that have been confirmed in blocks into buckets, based on either their fee or their priority.  Then for each bucket, the class calculates what percentage of the transactions were confirmed within various numbers of blocks.  It does this by keeping an exponentially decaying moving history for each bucket and confirm block count of the percentage of transactions in that bucket that were confirmed within that number of blocks.

-Eliminate txs which didn't have all inputs available at entry from fee/pri calcs

-Add dynamic breakpoints and tracking of confirmation delays in mempool transactions

-Remove old CMinerPolicyEstimator and CBlockAverage code

-New smartfees.py

-Pass a flag to the estimation code, using IsInitialBlockDownload as a proxy for when we are still catching up and we shouldn't be counting how many blocks it takes for transactions to be included.

-Add a policyestimator unit test
2015-05-13 10:36:24 -04:00
Pieter Wuille 6b04508e37 Introduce separate 'generate' RPC call 2015-04-01 11:47:10 -07:00
Suhas Daftuar 1eb1e65f09 Fix smartfees test for change to relay policy 2015-01-07 10:11:23 -05:00
Matt Corallo e3f315a0a5 Fix python usage for arch's broken maintainers 2014-11-27 00:02:28 -05:00
Wladimir J. van der Laan b6c99efe9c
Merge pull request #5121
214091d Update license in pull-tester and rpc-tests (Michael Ford)
2014-10-27 13:48:45 +01:00
Daniel Kraft dcb98466b4 Extend getchaintips RPC test.
Add the capability to simulate network splits to the RPC test framework
and use it to do more extensive testing of 'getchaintips'.
2014-10-24 08:53:04 +02:00
Michael Ford 214091d584 Update license in pull-tester and rpc-tests
Add missing copyright/license header where necessary
2014-10-23 09:48:19 +08:00
Gavin Andresen e8097f7df1
Refactor common RPC test code to BitcoinTestFramework base class
Inspired by #3956, with a little more flexibility built in.

I didn't touch rpcbind_test.py, because it only runs on Linux.
2014-07-09 10:19:26 -04:00
Gavin Andresen 171ca7745e estimatefee / estimatepriority RPC methods
New RPC methods: return an estimate of the fee (or priority) a
transaction needs to be likely to confirm in a given number of
blocks.

Mike Hearn created the first version of this method for estimating fees.
It works as follows:

For transactions that took 1 to N (I picked N=25) blocks to confirm,
keep N buckets with at most 100 entries in each recording the
fees-per-kilobyte paid by those transactions.

(separate buckets are kept for transactions that confirmed because
they are high-priority)

The buckets are filled as blocks are found, and are saved/restored
in a new fee_estiamtes.dat file in the data directory.

A few variations on Mike's initial scheme:

To estimate the fee needed for a transaction to confirm in X buckets,
all of the samples in all of the buckets are used and a median of
all of the data is used to make the estimate. For example, imagine
25 buckets each containing the full 100 entries. Those 2,500 samples
are sorted, and the estimate of the fee needed to confirm in the very
next block is the 50'th-highest-fee-entry in that sorted list; the
estimate of the fee needed to confirm in the next two blocks is the
150'th-highest-fee-entry, etc.

That algorithm has the nice property that estimates of how much fee
you need to pay to get confirmed in block N will always be greater
than or equal to the estimate for block N+1. It would clearly be wrong
to say "pay 11 uBTC and you'll get confirmed in 3 blocks, but pay
12 uBTC and it will take LONGER".

A single block will not contribute more than 10 entries to any one
bucket, so a single miner and a large block cannot overwhelm
the estimates.
2014-06-06 10:44:57 -04:00