Fix Max Block Weight (#501)

* fix max block weight

* fix milli per block too

cumulus/polkadot-parachains/rococo-runtime/src/lib.rs

@@ -119,8 +119,8 @@ const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(10);
 /// We allow `Normal` extrinsics to fill up the block up to 75%, the rest can be used
 /// by  Operational  extrinsics.
 const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
-/// We allow for 2 seconds of compute with a 6 second average block time.
-const MAXIMUM_BLOCK_WEIGHT: Weight = 2 * WEIGHT_PER_SECOND;
+/// We allow for .5 seconds of compute with a 12 second average block time.
+const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND / 2;
 
 parameter_types! {
 	pub const BlockHashCount: BlockNumber = 250;

cumulus/polkadot-parachains/shell-runtime/src/lib.rs

@@ -85,8 +85,8 @@ const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(10);
 /// We allow `Normal` extrinsics to fill up the block up to 75%, the rest can be used
 /// by  Operational  extrinsics.
 const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
-/// We allow for 2 seconds of compute with a 6 second average block time.
-const MAXIMUM_BLOCK_WEIGHT: Weight = 2 * WEIGHT_PER_SECOND;
+/// We allow for .5 seconds of compute with a 12 second average block time.
+const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND / 2;
 
 parameter_types! {
 	pub const BlockHashCount: BlockNumber = 250;

cumulus/test/runtime/src/lib.rs

@@ -96,7 +96,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	transaction_version: 1,
 };
 
-pub const MILLISECS_PER_BLOCK: u64 = 6000;
+pub const MILLISECS_PER_BLOCK: u64 = 12000;
 
 pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
 
@@ -125,8 +125,8 @@ const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(10);
 /// We allow `Normal` extrinsics to fill up the block up to 75%, the rest can be used
 /// by  Operational  extrinsics.
 const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
-/// We allow for 2 seconds of compute with a 6 second average block time.
-const MAXIMUM_BLOCK_WEIGHT: Weight = 2 * WEIGHT_PER_SECOND;
+/// We allow for .5 seconds of compute with a 12 second average block time.
+const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND / 2;
 
 parameter_types! {
 	pub const BlockHashCount: BlockNumber = 250;