最新parity 以太坊客户端2.7.2稳定版配置参数说明

最新parity 以太坊客户端2.7.2稳定版，客户端配置参数说明

Parity Ethereum Client.
By Wood/Paronyan/Kotewicz/Drwięga/Volf/Greeff
Habermeier/Czaban/Gotchac/Redman/Nikolsky
Schoedon/Tang/Adolfsson/Silva/Palm/Hirsz et al.
Copyright 2015-2020 Parity Technologies (UK) Ltd.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html.

parity [options]
parity [options] daemon
parity [options] account new
parity [options] account list
parity [options] account import …
parity [options] wallet import
parity [options] import —format=[FORMAT] [FILE]
parity [options] export blocks —format=[FORMAT] —from=[BLOCK] —to=[BLOCK]
[FILE]
parity [options] export state [—no-storage] [—no-code] —min-balance=[WEI]
—max-balance=[WEI] —at=[BLOCK] —format=[FORMAT] [FILE]
parity [options] signer new-token
parity [options] signer list
parity [options] signer sign [ID]
parity [options] signer reject
parity [options] snapshot —at=[BLOCK]
parity [options] restore [FILE]
parity [options] tools hash
parity [options] db kill
parity [options] db reset
parity [options] export-hardcoded-sync
parity [options] dapp

Operating Options:
—no-download
Normally new releases will be downloaded ready for updating. This
disables it. Not recommended.

--no-consensus  
    Force the binary to run even if there are known issues regarding  
    consensus. Not recommended.
--light  
    Experimental: run in light client mode. Light clients synchronize a bare  
    minimum of data and fetch necessary data on-demand from the network.  
    Much lower in storage, potentially higher in bandwidth. Has no effect  
    with subcommands.
--no-hardcoded-sync  
    By default, if there is no existing database the light client will  
    automatically jump to a block hardcoded in the chain's specifications.  
    This disables this feature.
--force-direct  
    Run the originally installed version of Parity, ignoring any updates  
    that have since been installed.
--mode=\[MODE\]  
    Set the operating mode. MODE can be one of: last - Uses the last-used  
    mode, active if none; active - Parity continuously syncs the chain;  
    passive - Parity syncs initially, then sleeps and wakes regularly to  
    resync; dark - Parity syncs only when the JSON-RPC is active; offline -  
    Parity doesn't sync. (default: last)
--mode-timeout=\[SECS\]  
    Specify the number of seconds before inactivity timeout occurs when mode  
    is dark or passive (default: 300)
--mode-alarm=\[SECS\]  
    Specify the number of seconds before auto sleep reawake timeout occurs  
    when mode is passive (default: 3600)
--auto-update=\[SET\]  
    Set a releases set to automatically update and install. SET can be one  
    of: all - All updates in the our release track; critical - Only  
    consensus/security updates; none - No updates will be auto-installed.  
    (default: critical)
--auto-update-delay=\[NUM\]  
    Specify the maximum number of blocks used for randomly delaying updates.  
    (default: 100)
--auto-update-check-frequency=\[NUM\]  
    Specify the number of blocks between each auto-update check. (default:  
    20)
--release-track=\[TRACK\]  
    Set which release track we should use for updates. TRACK can be one of:  
    stable - Stable releases; nightly - Nightly releases (unstable); testing  
    - Testing releases (do not use); current - Whatever track this  
    executable was released on. (default: current)
--chain=\[CHAIN\]  
    Specify the blockchain type. CHAIN may be either a JSON chain  
    specification file or ethereum, classic, poacore, xdai, volta, ewc,  
    musicoin, ellaism, mix, callisto, ethercore, morden, mordor, ropsten,  
    kovan, rinkeby, goerli, kotti, poasokol, testnet, evantestcore, evancore  
    or dev. (default: foundation)
--keys-path=\[PATH\]  
    Specify the path for JSON key files to be found (default: $BASE/keys)
--identity=\[NAME\]  
    Specify your node's name. (default: )
-d, --base-path=\[PATH\]  
    Specify the base data storage path.
--db-path=\[PATH\]  
    Specify the database directory path

Convenience Options:
—unsafe-expose
All servers will listen on external interfaces and will be remotely
accessible. It’s equivalent with setting the following:
—[ws,jsonrpc,ipfs-api,secretstore,stratum,dapps,secretstore-http]-inter
face=all —*-hosts=all This option is UNSAFE and should be used with
great care!

-c, --config=\[CONFIG\]  
    Specify a configuration. CONFIG may be either a configuration file or a  
    preset: dev, insecure, dev-insecure, mining, or non-standard-ports.  
    (default: $BASE/config.toml)
--ports-shift=\[SHIFT\]  
    Add SHIFT to all port numbers Parity is listening on. Includes network  
    port and all servers (HTTP JSON-RPC, WebSockets JSON-RPC, IPFS,  
    SecretStore). (default: 0)

Account Options:
—fast-unlock
Use drastically faster unlocking mode. This setting causes raw secrets
to be stored unprotected in memory, so use with care.

--keys-iterations=\[NUM\]  
    Specify the number of iterations to use when deriving key from the  
    password (bigger is more secure) (default: 10240)
--accounts-refresh=\[TIME\]  
    Specify the cache time of accounts read from disk. If you manage  
    thousands of accounts set this to 0 to disable refresh. (default: 5)
--unlock=\[ACCOUNTS\]  
    Unlock ACCOUNTS for the duration of the execution. ACCOUNTS is a comma  
    -delimited list of addresses.
--enable-signing-queue=\[BOOLEAN\]  
    Enables the signing queue for external transaction signing either via  
    CLI or personal\_unlockAccount, turned off by default. (default: false)
--password=\[FILE\]...  
    Provide a file containing a password for unlocking an account. Leading  
    and trailing whitespace is trimmed. (default: \[\])

Private Transactions Options:
—private-tx-enabled
Enable private transactions.

--private-state-offchain  
    Store private state offchain (in the local DB).
--private-signer=\[ACCOUNT\]  
    Specify the account for signing public transaction created upon verified  
    private transaction.
--private-validators=\[ACCOUNTS\]  
    Specify the accounts for validating private transactions. ACCOUNTS is a  
    comma-delimited list of addresses.
--private-account=\[ACCOUNT\]  
    Specify the account for signing requests to secret store.
--private-sstore-url=\[URL\]  
    Specify secret store URL used for encrypting private transactions.
--private-sstore-threshold=\[NUM\]  
    Specify secret store threshold used for encrypting private transactions.
--private-passwords=\[FILE\]...  
    Provide a file containing passwords for unlocking accounts (signer,  
    private account, validators).

UI Options:
—ui-path=[PATH]
Specify directory where Trusted UIs tokens should be stored. (default:
$BASE/signer)

Networking Options:
—no-warp
Disable syncing from the snapshot over the network.

--no-discovery  
    Disable new peer discovery.
--reserved-only  
    Connect only to reserved nodes.
--no-ancient-blocks  
    Disable downloading old blocks after snapshot restoration or warp sync.  
    Not recommended.
--no-serve-light  
    Disable serving of light peers.
--warp-barrier=\[NUM\]  
    When warp enabled never attempt regular sync before warping to block  
    NUM.
--port=\[PORT\]  
    Override the port on which the node should listen. (default: 30303)
--interface=\[IP\]  
    Network interfaces. Valid values are 'all', 'local' or the ip of the  
    interface you want parity to listen to. (default: all)
--min-peers=\[NUM\]  
    Try to maintain at least NUM peers.
--max-peers=\[NUM\]  
    Allow up to NUM peers.
--snapshot-peers=\[NUM\]  
    Allow additional NUM peers for a snapshot sync. (default: 0)
--nat=\[METHOD\]  
    Specify method to use for determining public address. Must be one of:  
    any, none, upnp, extip:<IP>. (default: any)
--allow-ips=\[FILTER\]  
    Filter outbound connections. Must be one of: private - connect to  
    private network IP addresses only; public - connect to public network IP  
    addresses only; all - connect to any IP address. (default: all)
--max-pending-peers=\[NUM\]  
    Allow up to NUM pending connections. (default: 64)
--network-id=\[INDEX\]  
    Override the network identifier from the chain we are on.
--bootnodes=\[NODES\]  
    Override the bootnodes from our chain. NODES should be comma-delimited  
    enodes.
--node-key=\[KEY\]  
    Specify node secret key, either as 64-character hex string or input to  
    SHA3 operation.
--reserved-peers=\[FILE\]  
    Provide a file containing enodes, one per line. These nodes will always  
    have a reserved slot on top of the normal maximum peers.

API and Console Options – HTTP JSON-RPC:
—jsonrpc-allow-missing-blocks
RPC calls will return ‘null’ instead of an error if ancient block sync
is still in progress and the block information requested could not be
found

--no-jsonrpc  
    Disable the HTTP JSON-RPC API server.
--jsonrpc-no-keep-alive  
    Disable HTTP/1.1 keep alive header. Disabling keep alive will prevent  
    re-using the same TCP connection to fire multiple requests, recommended  
    when using one request per connection.
--jsonrpc-experimental  
    Enable experimental RPCs. Enable to have access to methods from  
    unfinalised EIPs in all namespaces
--jsonrpc-port=\[PORT\]  
    Specify the port portion of the HTTP JSON-RPC API server. (default:  
    8545)
--jsonrpc-interface=\[IP\]  
    Specify the hostname portion of the HTTP JSON-RPC API server, IP should  
    be an interface's IP address, or all (all interfaces) or local.  
    (default: local)
--jsonrpc-apis=\[APIS\]  
    Specify the APIs available through the HTTP JSON-RPC interface using a  
    comma-delimited list of API names. Possible names are: all, safe, debug,  
    web3, net, eth, pubsub, personal, signer, parity, parity\_pubsub,  
    parity\_accounts, parity\_set, traces, rpc, secretstore. You can also  
    disable a specific API by putting '-' in the front, example:  
    all,-personal. 'safe' enables the following APIs: web3, net, eth,  
    pubsub, parity, parity\_pubsub, traces, rpc (default:  
    web3,eth,pubsub,net,parity,private,parity\_pubsub,traces,rpc,parity\_trans  
    actions\_pool)
--jsonrpc-hosts=\[HOSTS\]  
    List of allowed Host header values. This option will validate the Host  
    header sent by the browser, it is additional security against some  
    attack vectors. Special options: "all", "none",. (default: none)
--jsonrpc-threads=\[NUM\]  
    DEPRECATED, DOES NOTHING
--jsonrpc-server-threads=\[NUM\]  
    Enables multiple threads handling incoming connections for HTTP JSON-RPC  
    server. (default: 4)
--jsonrpc-cors=\[URL\]  
    Specify CORS header for HTTP JSON-RPC API responses. Special options:  
    "all", "none". (default: none)
--jsonrpc-max-payload=\[MB\]  
    Specify maximum size for HTTP JSON-RPC requests in megabytes.
--poll-lifetime=\[S\]  
    Set the RPC filter lifetime to S seconds. The filter has to be polled at  
    least every S seconds , otherwise it is removed. (default: 60)

API and Console Options – WebSockets:
—no-ws
Disable the WebSockets JSON-RPC server.

--ws-port=\[PORT\]  
    Specify the port portion of the WebSockets JSON-RPC server. (default:  
    8546)
--ws-interface=\[IP\]  
    Specify the hostname portion of the WebSockets JSON-RPC server, IP  
    should be an interface's IP address, or all (all interfaces) or local.  
    (default: local)
--ws-apis=\[APIS\]  
    Specify the JSON-RPC APIs available through the WebSockets interface  
    using a comma-delimited list of API names. Possible names are: all,  
    safe, web3, net, eth, pubsub, personal, signer, parity, parity\_pubsub,  
    parity\_accounts, parity\_set, traces, rpc, secretstore. You can also  
    disable a specific API by putting '-' in the front, example:  
    all,-personal. 'safe' enables the following APIs: web3, net, eth,  
    pubsub, parity, parity\_pubsub, traces, rpc (default:  
    web3,eth,pubsub,net,parity,parity\_pubsub,private,traces,rpc,parity\_trans  
    actions\_pool)
--ws-origins=\[URL\]  
    Specify Origin header values allowed to connect. Special options: "all",  
    "none". (default: parity://\*,chrome-extension://\*,moz-extension://\*)
--ws-hosts=\[HOSTS\]  
    List of allowed Host header values. This option will validate the Host  
    header sent by the browser, it is additional security against some  
    attack vectors. Special options: "all", "none". (default: none)
--ws-max-connections=\[CONN\]  
    Maximum number of allowed concurrent WebSockets JSON-RPC connections.  
    (default: 100)

API and Console Options – IPC:
—no-ipc
Disable JSON-RPC over IPC service.

--ipc-path=\[PATH\]  
    Specify custom path for JSON-RPC over IPC service. (default:  
    $BASE/jsonrpc.ipc)
--ipc-chmod=\[NUM\]  
    Specify octal value for ipc socket permissions (unix/bsd only) (default:  
    660)
--ipc-apis=\[APIS\]  
    Specify custom API set available via JSON-RPC over IPC using a comma  
    -delimited list of API names. Possible names are: all, safe, web3,  
    net, eth, pubsub, personal, signer, parity, parity\_pubsub,  
    parity\_accounts, parity\_set, traces, rpc, secretstore. You can also  
    disable a specific API by putting '-' in the front, example:  
    all,-personal. 'safe' enables the following APIs: web3, net, eth,  
    pubsub, parity, parity\_pubsub, traces, rpc (default:  
    web3,eth,pubsub,net,parity,parity\_pubsub,parity\_accounts,private,traces,  
    rpc,parity\_transactions\_pool)

API and Console Options – IPFS:
—ipfs-api
Enable IPFS-compatible HTTP API.

--ipfs-api-port=\[PORT\]  
    Configure on which port the IPFS HTTP API should listen. (default: 5001)
--ipfs-api-interface=\[IP\]  
    Specify the hostname portion of the IPFS API server, IP should be an  
    interface's IP address or local. (default: local)
--ipfs-api-hosts=\[HOSTS\]  
    List of allowed Host header values. This option will validate the Host  
    header sent by the browser, it is additional security against some  
    attack vectors. Special options: "all", "none". (default: none)
--ipfs-api-cors=\[URL\]  
    Specify CORS header for IPFS API responses. Special options: "all",  
    "none". (default: none)

Light Client Options:
—on-demand-time-window=[S]
Specify the maximum time to wait for a successful response

--on-demand-start-backoff=\[S\]  
    Specify light client initial backoff time for a request
--on-demand-end-backoff=\[S\]  
    Specify light client maximum backoff time for a request
--on-demand-max-backoff-rounds=\[TIMES\]  
    Specify light client maximum number of backoff iterations for a request
--on-demand-consecutive-failures=\[TIMES\]  
    Specify light client the number of failures for a request until it gets  
    exponentially backed off

Secret Store Options:
—no-secretstore
Disable Secret Store functionality.

--no-secretstore-http  
    Disable Secret Store HTTP API.
--no-secretstore-auto-migrate  
    Do not run servers set change session automatically when servers set  
    changes. This option has no effect when servers set is read from  
    configuration file.
--secretstore-http-cors=\[URL\]  
    Specify CORS header for Secret Store HTTP API responses. Special  
    options: "all", "none". (default: none)
--secretstore-acl-contract=\[SOURCE\]  
    Secret Store permissioning contract address source: none, registry  
    (contract address is read from 'secretstore\_acl\_checker' entry in  
    registry) or address. (default: registry)
--secretstore-contract=\[SOURCE\]  
    Secret Store Service contract address source: none, registry (contract  
    address is read from 'secretstore\_service' entry in registry) or  
    address.
--secretstore-srv-gen-contract=\[SOURCE\]  
    Secret Store Service server key generation contract address source:  
    none, registry (contract address is read from  
    'secretstore\_service\_srv\_gen' entry in registry) or address.
--secretstore-srv-retr-contract=\[SOURCE\]  
    Secret Store Service server key retrieval contract address source: none,  
    registry (contract address is read from 'secretstore\_service\_srv\_retr'  
    entry in registry) or address.
--secretstore-doc-store-contract=\[SOURCE\]  
    Secret Store Service document key store contract address source: none,  
    registry (contract address is read from 'secretstore\_service\_doc\_store'  
    entry in registry) or address.
--secretstore-doc-sretr-contract=\[SOURCE\]  
    Secret Store Service document key shadow retrieval contract address  
    source: none, registry (contract address is read from  
    'secretstore\_service\_doc\_sretr' entry in registry) or address.
--secretstore-nodes=\[NODES\]  
    Comma-separated list of other secret store cluster nodes in form  
    NODE\_PUBLIC\_KEY\_IN\_HEX@NODE\_IP\_ADDR:NODE\_PORT. (default: )
--secretstore-server-set-contract=\[SOURCE\]  
    Secret Store server set contract address source: none, registry  
    (contract address is read from 'secretstore\_server\_set' entry in  
    registry) or address. (default: registry)
--secretstore-interface=\[IP\]  
    Specify the hostname portion for listening to Secret Store Key Server  
    internal requests, IP should be an interface's IP address, or local.  
    (default: local)
--secretstore-port=\[PORT\]  
    Specify the port portion for listening to Secret Store Key Server  
    internal requests. (default: 8083)
--secretstore-http-interface=\[IP\]  
    Specify the hostname portion for listening to Secret Store Key Server  
    HTTP requests, IP should be an interface's IP address, or local.  
    (default: local)
--secretstore-http-port=\[PORT\]  
    Specify the port portion for listening to Secret Store Key Server HTTP  
    requests. (default: 8082)
--secretstore-path=\[PATH\]  
    Specify directory where Secret Store should save its data. (default:  
    $BASE/secretstore)
--secretstore-secret=\[SECRET\]  
    Hex-encoded secret key of this node.
--secretstore-admin=\[PUBLIC\]  
    Hex-encoded public key of secret store administrator.

Sealing/Mining Options:
—force-sealing
Force the node to author new blocks as if it were always sealing/mining.

--reseal-on-uncle  
    Force the node to author new blocks when a new uncle block is imported.
--remove-solved  
    Move solved blocks from the work package queue instead of cloning them.  
    This gives a slightly faster import speed, but means that extra  
    solutions submitted for the same work package will go unused.
--tx-queue-no-unfamiliar-locals  
    Local transactions sent through JSON-RPC (HTTP, WebSockets, etc) will be  
    treated as 'external' if the sending account is unknown.
--tx-queue-no-early-reject  
    Disables transaction queue optimization to early reject transactions  
    below minimal effective gas price. This allows local transactions to  
    always enter the pool, despite it being full, but requires additional  
    ecrecover on every transaction.
--refuse-service-transactions  
    Always refuse service transactions.
--infinite-pending-block  
    Pending block will be created with maximal possible gas limit and will  
    execute all transactions in the queue. Note that such block is invalid  
    and should never be attempted to be mined.
--no-persistent-txqueue  
    Don't save pending local transactions to disk to be restored whenever  
    the node restarts.
--stratum  
    Run Stratum server for miner push notification.
--reseal-on-txs=\[SET\]  
    Specify which transactions should force the node to reseal a block. SET  
    is one of: none - never reseal on new transactions; own - reseal only on  
    a new local transaction; ext - reseal only on a new external  
    transaction; all - reseal on all new transactions. (default: own)
--reseal-min-period=\[MS\]  
    Specify the minimum time between reseals from incoming transactions. MS  
    is time measured in milliseconds. (default: 2000)
--reseal-max-period=\[MS\]  
    Specify the maximum time since last block to enable force-sealing. MS is  
    time measured in milliseconds. (default: 120000)
--work-queue-size=\[ITEMS\]  
    Specify the number of historical work packages which are kept cached  
    lest a solution is found for them later. High values take more memory  
    but result in fewer unusable solutions. (default: 20)
--relay-set=\[SET\]  
    Set of transactions to relay. SET may be: cheap - Relay any transaction  
    in the queue (this may include invalid transactions); strict - Relay  
    only executed transactions (this guarantees we don't relay invalid  
    transactions, but means we relay nothing if not mining); lenient - Same  
    as strict when mining, and cheap when not. (default: cheap)
--usd-per-tx=\[USD\]  
    Amount of USD to be paid for a basic transaction. The minimum gas price  
    is set accordingly. (default: 0.0001)
--usd-per-eth=\[SOURCE\]  
    USD value of a single ETH. SOURCE may be either an amount in USD, a web  
    service or 'auto' to use each web service in turn and fallback on the  
    last known good value. (default: auto)
--price-update-period=\[T\]  
    T will be allowed to pass between each gas price update. T may be daily,  
    hourly, a number of seconds, or a time string of the form "2 days", "30  
    minutes" etc.. (default: hourly)
--gas-floor-target=\[GAS\]  
    Amount of gas per block to target when sealing a new block. (default:  
    8000000)
--gas-cap=\[GAS\]  
    A cap on how large we will raise the gas limit per block due to  
    transaction volume. (default: 10000000)
--tx-queue-mem-limit=\[MB\]  
    Maximum amount of memory that can be used by the transaction queue.  
    Setting this parameter to 0 disables limiting. (default: 4)
--tx-queue-size=\[LIMIT\]  
    Maximum amount of transactions in the queue (waiting to be included in  
    next block). (default: 8192)
--tx-queue-per-sender=\[LIMIT\]  
    Maximum number of transactions per sender in the queue. By default it's  
    1% of the entire queue, but not less than 16.
--tx-queue-locals=\[ACCOUNTS\]  
    Specify local accounts for which transactions are prioritized in the  
    queue. ACCOUNTS is a comma-delimited list of addresses.
--tx-queue-strategy=\[S\]  
    Prioritization strategy used to order transactions in the queue. S may  
    be: gas\_price - Prioritize txs with high gas price (default: gas\_price)
--stratum-interface=\[IP\]  
    Interface address for Stratum server. (default: local)
--stratum-port=\[PORT\]  
    Port for Stratum server to listen on. (default: 8008)
--min-gas-price=\[STRING\]  
    Minimum amount of Wei per GAS to be paid for a transaction to be  
    accepted for mining. Overrides --usd-per-tx.
--gas-price-percentile=\[PCT\]  
    Set PCT percentile gas price value from last 100 blocks as default gas  
    price when sending transactions. (default: 50)
--author=\[ADDRESS\]  
    Specify the block author (aka "coinbase") address for sending block  
    rewards from sealed blocks. NOTE: MINING WILL NOT WORK WITHOUT THIS  
    OPTION.
--engine-signer=\[ADDRESS\]  
    Specify the address which should be used to sign consensus messages and  
    issue blocks. Relevant only to non-PoW chains.
--tx-gas-limit=\[GAS\]  
    Apply a limit of GAS as the maximum amount of gas a single transaction  
    may have for it to be mined.
--tx-time-limit=\[MS\]  
    Maximal time for processing single transaction. If enabled senders of  
    transactions offending the limit will get other transactions penalized.
--extra-data=\[STRING\]  
    Specify a custom extra-data for authored blocks, no more than 32  
    characters.
--notify-work=\[URLS\]  
    URLs to which work package notifications are pushed. URLS should be a  
    comma-delimited list of HTTP URLs.
--stratum-secret=\[STRING\]  
    Secret for authorizing Stratum server for peers.
--max-round-blocks-to-import=\[S\]  
    Maximal number of blocks to import for each import round. (default: 12)

Internal Options:
—can-restart
Executable will auto-restart if exiting with 69

Miscellaneous Options:
—no-color
Don’t use terminal color codes in output.

-v, --version  
    Show information about version.
--no-config  
    Don't load a configuration file.
-l, --logging=\[LOGGING\]  
    Specify the general logging level (error, warn, info, debug or trace).  
    It can also be set for a specific module, example: '-l  
    sync=debug,rpc=trace'
--log-file=\[FILENAME\]  
    Specify a filename into which logging should be appended.

Footprint Options:
—scale-verifiers
Automatically scale amount of verifier threads based on workload. Not
guaranteed to be faster.

--tracing=\[BOOL\]  
    Indicates if full transaction tracing should be enabled. Works only if  
    client had been fully synced with tracing enabled. BOOL may be one of  
    auto, on, off. auto uses last used value of this option (off if it does  
    not exist). (default: auto)
--pruning=\[METHOD\]  
    Configure pruning of the state/storage trie. METHOD may be one of auto,  
    archive, fast: archive - keep all state trie data. No pruning. fast -  
    maintain journal overlay. Fast but 50MB used. auto - use the method most  
    recently synced or default to fast if none synced. (default: auto)
--pruning-history=\[NUM\]  
    Set a minimum number of recent states to keep in memory when pruning is  
    active. (default: 64)
--pruning-memory=\[MB\]  
    The ideal amount of memory in megabytes to use to store recent states.  
    As many states as possible will be kept within this limit, and at least  
    --pruning-history states will always be kept. (default: 32)
--cache-size-db=\[MB\]  
    Override database cache size. (default: 128)
--cache-size-blocks=\[MB\]  
    Specify the preferred size of the blockchain cache in megabytes.  
    (default: 8)
--cache-size-queue=\[MB\]  
    Specify the maximum size of memory to use for block queue. (default: 40)
--cache-size-state=\[MB\]  
    Specify the maximum size of memory to use for the state cache. (default:  
    25)
--db-compaction=\[TYPE\]  
    Database compaction type. TYPE may be one of: ssd - suitable for SSDs  
    and fast HDDs; hdd - suitable for slow HDDs; auto - determine  
    automatically. (default: auto)
--fat-db=\[BOOL\]  
    Build appropriate information to allow enumeration of all accounts and  
    storage keys. Doubles the size of the state database. BOOL may be one of  
    on, off or auto. (default: auto)
--cache-size=\[MB\]  
    Set total amount of discretionary memory to use for the entire system,  
    overrides other cache and queue options.
--num-verifiers=\[INT\]  
    Amount of verifier threads to use or to begin with, if verifier auto  
    -scaling is enabled.

Import/export Options:
—no-seal-check
Skip block seal check.

Snapshot Options:
—no-periodic-snapshot
Disable automated snapshots which usually occur once every 5000 blocks.

--snapshot-threads=\[NUM\]  
    Enables multiple threads for snapshots creation.

Whisper Options:
—whisper
Does nothing. Whisper has been moved to
https://github.com/paritytech/whisper

--whisper-pool-size=\[MB\]  
    Does nothing. Whisper has been moved to  
    https://github.com/paritytech/whisper