760c5299c7
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.
123 lines
7.2 KiB
Go
123 lines
7.2 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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/*
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btcd is a full-node bitcoin implementation written in Go.
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The default options are sane for most users. This means btcd will work 'out of
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the box' for most users. However, there are also a wide variety of flags that
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can be used to control it.
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The following section provides a usage overview which enumerates the flags. An
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interesting point to note is that the long form of all of these options
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(except -C) can be specified in a configuration file that is automatically
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parsed when btcd starts up. By default, the configuration file is located at
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~/.btcd/btcd.conf on POSIX-style operating systems and %LOCALAPPDATA%\btcd\btcd.conf
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on Windows. The -C (--configfile) flag, as shown below, can be used to override
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this location.
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Usage:
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btcd [OPTIONS]
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Application Options:
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-V, --version Display version information and exit
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-C, --configfile= Path to configuration file
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-b, --datadir= Directory to store data
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--logdir= Directory to log output.
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-a, --addpeer= Add a peer to connect with at startup
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--connect= Connect only to the specified peers at startup
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--nolisten Disable listening for incoming connections -- NOTE:
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Listening is automatically disabled if the --connect
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or --proxy options are used without also specifying
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listen interfaces via --listen
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--listen= Add an interface/port to listen for connections
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(default all interfaces port: 8333, testnet: 18333)
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--maxpeers= Max number of inbound and outbound peers (125)
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--nobanning Disable banning of misbehaving peers
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--banthreshold= Maximum allowed ban score before disconnecting and
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banning misbehaving peers.
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--banduration= How long to ban misbehaving peers. Valid time units
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are {s, m, h}. Minimum 1 second (24h0m0s)
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-u, --rpcuser= Username for RPC connections
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-P, --rpcpass= Password for RPC connections
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--rpclimituser= Username for limited RPC connections
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--rpclimitpass= Password for limited RPC connections
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--rpclisten= Add an interface/port to listen for RPC connections
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(default port: 8334, testnet: 18334)
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--rpccert= File containing the certificate file
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--rpckey= File containing the certificate key
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--rpcmaxclients= Max number of RPC clients for standard connections
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(10)
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--rpcmaxwebsockets= Max number of RPC websocket connections (25)
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--rpcquirks Mirror some JSON-RPC quirks of Bitcoin Core -- NOTE:
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Discouraged unless interoperability issues need to
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be worked around
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--norpc Disable built-in RPC server -- NOTE: The RPC server
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is disabled by default if no rpcuser/rpcpass or
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rpclimituser/rpclimitpass is specified
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--notls Disable TLS for the RPC server -- NOTE: This is only
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allowed if the RPC server is bound to localhost
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--nodnsseed Disable DNS seeding for peers
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--externalip= Add an ip to the list of local addresses we claim to
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listen on to peers
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--proxy= Connect via SOCKS5 proxy (eg. 127.0.0.1:9050)
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--proxyuser= Username for proxy server
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--proxypass= Password for proxy server
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--onion= Connect to tor hidden services via SOCKS5 proxy
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(eg. 127.0.0.1:9050)
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--onionuser= Username for onion proxy server
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--onionpass= Password for onion proxy server
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--noonion Disable connecting to tor hidden services
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--torisolation Enable Tor stream isolation by randomizing user
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credentials for each connection.
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--testnet Use the test network
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--regtest Use the regression test network
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--simnet Use the simulation test network
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--nocheckpoints Disable built-in checkpoints. Don't do this unless
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you know what you're doing.
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--dbtype= Database backend to use for the Block Chain (ffldb)
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--profile= Enable HTTP profiling on given port -- NOTE port
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must be between 1024 and 65536
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--cpuprofile= Write CPU profile to the specified file
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-d, --debuglevel= Logging level for all subsystems {trace, debug,
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info, warn, error, critical} -- You may also specify
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<subsystem>=<level>,<subsystem2>=<level>,... to set
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the log level for individual subsystems -- Use show
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to list available subsystems (info)
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--upnp Use UPnP to map our listening port outside of NAT
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--minrelaytxfee= The minimum transaction fee in BTC/kB to be
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considered a non-zero fee.
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--limitfreerelay= Limit relay of transactions with no transaction fee
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to the given amount in thousands of bytes per
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minute (15)
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--norelaypriority Do not require free or low-fee transactions to have
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high priority for relaying
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--maxorphantx= Max number of orphan transactions to keep in memory
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(100)
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--generate Generate (mine) bitcoins using the CPU
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--miningaddr= Add the specified payment address to the list of
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addresses to use for generated blocks -- At least
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one address is required if the generate option is
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set
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--blockminsize= Mininum block size in bytes to be used when creating
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a block
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--blockmaxsize= Maximum block size in bytes to be used when creating
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a block (750000)
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--blockprioritysize= Size in bytes for high-priority/low-fee transactions
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when creating a block (50000)
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--getworkkey= DEPRECATED -- Use the --miningaddr option instead
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--nopeerbloomfilters Disable bloom filtering support.
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--sigcachemaxsize= The maximum number of entries in the signature
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verification cache.
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--blocksonly Do not accept transactions from remote peers.
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--relaynonstd Relay non-standard transactions regardless of the
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default settings for the active network.
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--rejectnonstd Reject non-standard transactions regardless of the
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default settings for the active network.
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Help Options:
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-h, --help Show this help message
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*/
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package main
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