jsonrpc, rest: reduce batch size to 128MB before writting

Reduce the minimum batch size to write out during indexing the live
object set from 256MB to 128MB, these smaller batch sizes resulted in a
small improvement to index initialization.

crates/sui-core/src/jsonrpc_index.rs

@@ -1747,9 +1747,9 @@ impl<'a> LiveObjectIndexer for CoinLiveObjectIndexer<'a> {
         self.batch
             .insert_batch(&self.tables.coin_index_2, [(key, value)])?;
 
-        // If the batch size grows to greater that 256MB then write out to the DB so that the
+        // If the batch size grows to greater that 128MB then write out to the DB so that the
         // data we need to hold in memory doesn't grown unbounded.
-        if self.batch.size_in_bytes() >= 1 << 28 {
+        if self.batch.size_in_bytes() >= 1 << 27 {
             std::mem::replace(&mut self.batch, self.tables.coin_index_2.batch()).write()?;
         }
 

crates/sui-core/src/rest_index.rs

@@ -694,9 +694,9 @@ impl<'a> LiveObjectIndexer for RestLiveObjectIndexer<'a> {
             }
         }
 
-        // If the batch size grows to greater that 256MB then write out to the DB so that the
+        // If the batch size grows to greater that 128MB then write out to the DB so that the
         // data we need to hold in memory doesn't grown unbounded.
-        if self.batch.size_in_bytes() >= 1 << 28 {
+        if self.batch.size_in_bytes() >= 1 << 27 {
             std::mem::replace(&mut self.batch, self.tables.owner.batch()).write()?;
         }