Limit transaction queue memory & limit future queue (#6038)

* Remove confusing gas_limit in the pool.

* Change defaults

* Limit transaction queue by memory usage.

* Change defaults to something lower.

* Fix rpc test.

* Fix js issues.

* Renamed block_gas_limit

parity/cli/config.full.toml

@@ -106,8 +106,8 @@ usd_per_eth = "auto"
 price_update_period = "hourly"
 gas_floor_target = "4700000"
 gas_cap = "6283184"
-tx_queue_size = 1024
-tx_queue_gas = "auto"
+tx_queue_size = 8192
+tx_queue_gas = "off"
 tx_queue_strategy = "gas_factor"
 tx_queue_ban_count = 1
 tx_queue_ban_time = 180 #s

parity/cli/config.toml

@@ -56,8 +56,8 @@ reseal_on_txs = "all"
 reseal_min_period = 4000
 reseal_max_period = 60000
 price_update_period = "hourly"
-tx_queue_size = 1024
-tx_queue_gas = "auto"
+tx_queue_size = 8192
+tx_queue_gas = "off"
 
 [footprint]
 tracing = "on"

parity/cli/mod.rs

@@ -278,9 +278,11 @@ usage! {
 			or |c: &Config| otry!(c.mining).gas_cap.clone(),
 		flag_extra_data: Option<String> = None,
 			or |c: &Config| otry!(c.mining).extra_data.clone().map(Some),
-		flag_tx_queue_size: usize = 1024usize,
+		flag_tx_queue_size: usize = 8192usize,
 			or |c: &Config| otry!(c.mining).tx_queue_size.clone(),
-		flag_tx_queue_gas: String = "auto",
+		flag_tx_queue_mem_limit: u32 = 2u32,
+			or |c: &Config| otry!(c.mining).tx_queue_mem_limit.clone(),
+		flag_tx_queue_gas: String = "off",
 			or |c: &Config| otry!(c.mining).tx_queue_gas.clone(),
 		flag_tx_queue_strategy: String = "gas_price",
 			or |c: &Config| otry!(c.mining).tx_queue_strategy.clone(),
@@ -546,6 +548,7 @@ struct Mining {
 	gas_cap: Option<String>,
 	extra_data: Option<String>,
 	tx_queue_size: Option<usize>,
+	tx_queue_mem_limit: Option<u32>,
 	tx_queue_gas: Option<String>,
 	tx_queue_strategy: Option<String>,
 	tx_queue_ban_count: Option<u16>,
@@ -809,8 +812,9 @@ mod tests {
 			flag_gas_floor_target: "4700000".into(),
 			flag_gas_cap: "6283184".into(),
 			flag_extra_data: Some("Parity".into()),
-			flag_tx_queue_size: 1024usize,
-			flag_tx_queue_gas: "auto".into(),
+			flag_tx_queue_size: 8192usize,
+			flag_tx_queue_mem_limit: 2u32,
+			flag_tx_queue_gas: "off".into(),
 			flag_tx_queue_strategy: "gas_factor".into(),
 			flag_tx_queue_ban_count: 1u16,
 			flag_tx_queue_ban_time: 180u16,
@@ -1035,8 +1039,9 @@ mod tests {
 				price_update_period: Some("hourly".into()),
 				gas_floor_target: None,
 				gas_cap: None,
-				tx_queue_size: Some(1024),
-				tx_queue_gas: Some("auto".into()),
+				tx_queue_size: Some(8192),
+				tx_queue_mem_limit: None,
+				tx_queue_gas: Some("off".into()),
 				tx_queue_strategy: None,
 				tx_queue_ban_count: None,
 				tx_queue_ban_time: None,

parity/cli/usage.txt

@@ -311,6 +311,9 @@ Sealing/Mining Options:
                                    block due to transaction volume (default: {flag_gas_cap}).
   --extra-data STRING              Specify a custom extra-data for authored blocks, no
                                    more than 32 characters. (default: {flag_extra_data:?})
+  --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: {flag_tx_queue_mem_limit}).
   --tx-queue-size LIMIT            Maximum amount of transactions in the queue (waiting
                                    to be included in next block) (default: {flag_tx_queue_size}).
   --tx-queue-gas LIMIT             Maximum amount of total gas for external transactions in