Added txpoolmaxsize (#1138)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

docs/Reference/JSON-RPC-API-Methods.md

@@ -887,9 +887,9 @@ Returns the code of the smart contract at the specified address. Compiled smart
 
 ### eth_sendRawTransaction
 
-Sends a [signed transaction](../Using-Pantheon/Transactions.md). A transaction can send ether, deploy a contract, or interact with a contract.  
+Sends a [signed transaction](../Using-Pantheon/Transactions/Transactions.md). A transaction can send ether, deploy a contract, or interact with a contract.  
 
-You can interact with contracts using [eth_sendRawTransaction or eth_call](../Using-Pantheon/Transactions.md#eth_call-or-eth_sendrawtransaction).
+You can interact with contracts using [eth_sendRawTransaction or eth_call](../Using-Pantheon/Transactions/Transactions.md#eth_call-or-eth_sendrawtransaction).
 
 To avoid exposing your private key, create signed transactions offline and send the signed transaction data using `eth_sendRawTransaction`. 
 
@@ -903,7 +903,7 @@ To avoid exposing your private key, create signed transactions offline and send
 `params: ["0xf869018203e882520894f17f52151ebef6c7334fad080c5704d77216b732881bc16d674ec80000801ba02da1c48b670996dcb1f447ef9ef00b33033c48a4fe938f420bec3e56bfd24071a062e0aa78a81bf0290afbc3a9d8e9a068e6d74caa66c5e0fa8a46deaae96b0833"]`
 
 !!! note
-    [Creating and Sending Transactions](../Using-Pantheon/Transactions.md) includes examples of creating signed transactions using the [web3.js](https://github.com/ethereum/web3.js/) library.
+    [Creating and Sending Transactions](../Using-Pantheon/Transactions/Transactions.md) includes examples of creating signed transactions using the [web3.js](https://github.com/ethereum/web3.js/) library.
 
 **Returns**
 
@@ -930,7 +930,7 @@ To avoid exposing your private key, create signed transactions offline and send
 
 Invokes a contract function locally and does not change the state of the blockchain. 
 
-You can interact with contracts using [eth_sendRawTransaction or eth_call](../Using-Pantheon/Transactions.md#eth_call-or-eth_sendrawtransaction).
+You can interact with contracts using [eth_sendRawTransaction or eth_call](../Using-Pantheon/Transactions/Transactions.md#eth_call-or-eth_sendrawtransaction).
 
 **Parameters**
 

docs/Reference/Pantheon-CLI-Syntax.md

@@ -952,6 +952,22 @@ The default is 8546. Ports must be [exposed appropriately](../Configuring-Panthe
 !!!note
     This option is not used when running Pantheon from the [Docker image](../Getting-Started/Run-Docker-Image.md#exposing-ports). 
 
+### tx-pool-max-size
+
+```bash tab="Syntax"
+--tx-pool-max-size=<INTEGER>
+```
+
+```bash tab="Example Command Line"
+--tx-pool-max-size=2000
+```
+
+```bash tab="Example Configuration File"
+tx-pool-max-size="2000"
+```
+
+Maximum number of transactions kept in the transaction pool. Default is 4096. 
+
 ### help
 
 ```bash tab="Syntax"

docs/Tutorials/Create-Private-Network.md

@@ -205,7 +205,7 @@ Import accounts to MetaMask and send transactions as described in the [Private N
 !!! info 
     Pantheon does not implement [private key management](../Using-Pantheon/Account-Management.md).
     
-Send transactions using `eth_sendRawTransaction` to [send ether or, deploy or invoke contracts](../Using-Pantheon/Transactions.md).
+Send transactions using `eth_sendRawTransaction` to [send ether or, deploy or invoke contracts](../Using-Pantheon/Transactions/Transactions.md).
 
 Use the [JSON-RPC API](../JSON-RPC-API/Using-JSON-RPC-API.md). 
 

docs/Using-Pantheon/Account-Management.md

@@ -8,4 +8,4 @@ Pantheon does not implement private key management. Use third-party tools (for e
 In Pantheon, you can use the JSON-RPC methods:
 
  * [eth_getBalance](../Reference/JSON-RPC-API-Methods.md#eth_getbalance) to obtain the account balance
- * [eth_sendRawTransaction](../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction) to transfer ether or create and interact with contracts (for more information, refer to [Transactions](Transactions.md#transactions)).  
+ * [eth_sendRawTransaction](../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction) to transfer ether or create and interact with contracts (for more information, refer to [Transactions](Transactions/Transactions.md#transactions)).  

docs/Using-Pantheon/Transactions/Transaction-Pool.md

@@ -0,0 +1,13 @@
+# Transaction Pool 
+
+Options and methods for configuring and viewing the transaction pool include: 
+
+* [`txpool_pantheonTransactions`](../../Reference/JSON-RPC-API-Methods.md#txpool_pantheonTransactions) JSON-RPC API method
+
+* [`--tx-pool-max-size`](../../Reference/Pantheon-CLI-Syntax.md#tx-pool-max-size) command line option
+
+Once full, the Pantheon transaction pool accepts and retains local transactions in preference to remote transactions. 
+
+Decreasing the maximum size of the transaction pool reduces memory use. If the network is busy and there is a backlog
+of transactions, increasing the size of the transaction pool reduces the risk of transactions being 
+removed from the transaction pool.

docs/Using-Pantheon/Transactions/Transactions.md

@@ -3,9 +3,9 @@ description: Some use cases of creating transactions on a Pantheon network
 
 # Creating and Sending Transactions
 
-You can send signed transactions using the [`eth_sendRawTransaction`](../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction) JSON-RPC API method.
+You can send signed transactions using the [`eth_sendRawTransaction`](../../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction) JSON-RPC API method.
 
-These examples describe how to create a signed raw transaction that can be passed to [`eth_sendRawTransaction`](../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction).
+These examples describe how to create a signed raw transaction that can be passed to [`eth_sendRawTransaction`](../../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction).
 
 !!!tip
     To avoid exposing your private keys, create signed transactions offline.
@@ -29,7 +29,7 @@ Example Javascript scripts are provided to create signed raw transaction strings
     [Node.js](https://nodejs.org/en/download/) must be installed to run these Javascript scripts. 
 
 You can use the example Javascript scripts to create and send raw transactions in the private network created by the 
-[Private Network Quickstart](../Tutorials/Private-Network-Quickstart.md).
+[Private Network Quickstart](../../Tutorials/Private-Network-Quickstart.md).
 
 You must update the `JSON-RPC endpoint` in the examples to the endpoint for the private network displayed after running 
 the `run.sh` script.
@@ -146,13 +146,13 @@ All accounts and private keys in the examples are from the `dev.json` genesis fi
 
 ## eth_call or eth_sendRawTransaction
 
-You can interact with contracts using [eth_call](../Reference/JSON-RPC-API-Methods.md#eth_call) or [eth_sendRawTransaction](../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction). 
+You can interact with contracts using [eth_call](../../Reference/JSON-RPC-API-Methods.md#eth_call) or [eth_sendRawTransaction](../../Reference/JSON-RPC-API-Methods.md#eth_sendrawtransaction). 
 
-|eth_call  | eth_sendRawTransaction |
-|--------|--------|
-|Read-only | Write
-| Invokes contract function locally | Broadcasts to network
-| Does not change state of blockchain | Updates blockchain (for example, transfers ether between accounts)
-| Does not consume gas | Requires gas
+| eth_call                                                | eth_sendRawTransaction                                                                                                         |
+|---------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|
+| Read-only                                               | Write                                                                                                                          |
+| Invokes contract function locally                       | Broadcasts to network                                                                                                          |
+| Does not change state of blockchain                     | Updates blockchain (for example, transfers ether between accounts)                                                             |
+| Does not consume gas                                    | Requires gas                                                                                                                   |
 | Synchronous                                             | Asynchronous                                                                                                                   |
-| Return value of contract function available immediately| Returns transaction hash only.  Possible transaction may not be included in a block (for example, if the gas price is too low)
+| Return value of contract function available immediately | Returns transaction hash only.  Possible transaction may not be included in a block (for example, if the gas price is too low) |

mkdocs.yml

@@ -79,10 +79,12 @@ nav:
     - Permissions:
         - Nodes and Accounts Whitelists: Permissions/Permissioning.md
     - Using Pantheon:
+        - Transactions:
+          - Creating and Sending Transactions: Using-Pantheon/Transactions/Transactions.md
+          - Transaction Pool: Using-Pantheon/Transactions/Transaction-Pool.md
         - Events and Logs:
           - Overview: Using-Pantheon/Events-and-Logs.md
           - Accessing Logs Using JSON-RPC API: Using-Pantheon/Accessing-Logs-Using-JSON-RPC.md
-        - Creating and Sending Transactions: Using-Pantheon/Transactions.md
         - Using Wallets for Account Management: Using-Pantheon/Account-Management.md
         - Mining: Using-Pantheon/Mining.md
         - RPC Pub/Sub: Using-Pantheon/RPC-PubSub.md