Increase default gas multiplier to 1.1 (#2443)

* Increase default gas multiplier to 1.1

* Add changelog entry

.changelog/unreleased/improvements/ibc-relayer-cli/2435-gas-multiplier.md

@@ -0,0 +1,2 @@
+- Increase default value for `gas_multiplier` setting to 1.1
+  ([#2435](https://github.com/informalsystems/ibc-rs/issues/2435))

config.toml

@@ -164,9 +164,9 @@ gas_price = { price = 0.001, denom = 'stake' }
 # is 80_000, then gas used to compute the fee will be adjusted to
 # 80_000 * 1.1 = 88_000.
 #
-# Default: 1.0, ie. the gas is not increased.
+# Default: 1.1, ie. the gas is increased by 10%
 # Minimum value: 1.0
-gas_multiplier = 1.0
+gas_multiplier = 1.1
 
 # Specify how many IBC messages at most to include in a single transaction.
 # Default: 30
@@ -248,7 +248,7 @@ store_prefix = 'ibc'
 default_gas = 100000
 max_gas = 400000
 gas_price = { price = 0.001, denom = 'stake' }
-gas_multiplier = 1.0
+gas_multiplier = 1.1
 max_msg_num = 30
 max_tx_size = 2097152
 clock_drift = '5s'

relayer/src/chain/cosmos/types/gas.rs

@@ -7,7 +7,7 @@ use crate::config::{ChainConfig, GasPrice};
 const DEFAULT_MAX_GAS: u64 = 400_000;
 
 /// By default, we do not increase the estimated gas to compute the fee.
-const DEFAULT_GAS_MULTIPLIER: f64 = 1.0;
+const DEFAULT_GAS_MULTIPLIER: f64 = 1.1;
 
 const DEFAULT_FEE_GRANTER: &str = "";