producer_plugin loads functionality required for a node to produce blocks.
# config.ini plugin = eosio::producer_plugin [options]
# nodeos startup params nodeos ... -- plugin eosio::producer_plugin [options]
These can be specified from both the
nodeos command-line or the
Config Options for eosio::producer_plugin: -e [ --enable-stale-production ] Enable block production, even if the chain is stale. -x [ --pause-on-startup ] Start this node in a state where production is paused --max-transaction-time arg (=30) Limits the maximum time (in milliseconds) that is allowed a pushed transaction's code to execute before being considered invalid --max-irreversible-block-age arg (=-1) Limits the maximum age (in seconds) of the DPOS Irreversible Block for a chain this node will produce blocks on (use negative value to indicate unlimited) -p [ --producer-name ] arg ID of producer controlled by this node (e.g. inita; may specify multiple times) --private-key arg (DEPRECATED - Use signature-provider instead) Tuple of [public key, WIF private key] (may specify multiple times) --signature-provider arg (=EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV=KEY:5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3) Key=Value pairs in the form <public-key>=<provider-spec> Where: <public-key> is a string form of a vaild EOSIO public key <provider-spec> is a string in the form <provider-type> :<data> <provider-type> is KEY, KEOSD, or SE KEY:<data> is a string form of a valid EOSIO private key which maps to the provided public key KEOSD:<data> is the URL where keosd is available and the approptiate wallet(s) are unlocked SE: indicates the key resides in Secure Enclave --greylist-account arg account that can not access to extended CPU/NET virtual resources --greylist-limit arg (=1000) Limit (between 1 and 1000) on the multiple that CPU/NET virtual resources can extend during low usage (only enforced subjectively; use 1000 to not enforce any limit) --produce-time-offset-us arg (=0) Offset of non last block producing time in microseconds. Valid range 0 .. -block_time_interval. --last-block-time-offset-us arg (=-200000) Offset of last block producing time in microseconds. Valid range 0 .. -block_time_interval. --cpu-effort-percent arg (=80) Percentage of cpu block production time used to produce block. Whole number percentages, e.g. 80 for 80% --last-block-cpu-effort-percent arg (=80) Percentage of cpu block production time used to produce last block. Whole number percentages, e.g. 80 for 80% --max-block-cpu-usage-threshold-us arg (=5000) Threshold of CPU block production to consider block full; when within threshold of max-block-cpu-usage block can be produced immediately --max-block-net-usage-threshold-bytes arg (=1024) Threshold of NET block production to consider block full; when within threshold of max-block-net-usage block can be produced immediately --max-scheduled-transaction-time-per-block-ms arg (=100) Maximum wall-clock time, in milliseconds, spent retiring scheduled transactions in any block before returning to normal transaction processing. --subjective-cpu-leeway-us arg (=31000) Time in microseconds allowed for a transaction that starts with insufficient CPU quota to complete and cover its CPU usage. --incoming-defer-ratio arg (=1) ratio between incoming transactions and deferred transactions when both are queued for execution --incoming-transaction-queue-size-mb arg (=1024) Maximum size (in MiB) of the incoming transaction queue. Exceeding this value will subjectively drop transaction with resource exhaustion. --producer-threads arg (=2) Number of worker threads in producer thread pool --snapshots-dir arg (="snapshots") the location of the snapshots directory (absolute path or relative to application data dir)
You can give one of the transaction types priority over another when the producer plugin has a queue of transactions pending.
The option below sets the ratio between the incoming transaction and the deferred transaction:
--incoming-defer-ratio arg (=1)
By default value of
producer plugin processes one incoming transaction per deferred transaction. When
arg sets to
producer plugin processes 10 incoming transactions per deferred transaction.
arg is set to a sufficiently large number, the plugin always processes the incoming transaction first until the queue of the incoming transactions is empty. Respectively, if the
arg is 0, the
producer plugin processes the deferred transactions queue first.
# config.ini plugin = eosio::chain_plugin [operations] [options]
# command-line nodeos ... --plugin eosio::chain_plugin [operations] [options]
For details about how blocks are produced please read the following block producing explainer.