Make background tranquility a configurable parameter

src/util/config.rs

@@ -23,6 +23,10 @@ pub struct Config {
 	#[serde(default = "default_block_size")]
 	pub block_size: usize,
 
+	/// Size of data blocks to save to disk
+	#[serde(default = "default_block_manager_background_tranquility")]
+	pub block_manager_background_tranquility: u32,
+
 	/// Replication mode. Supported values:
 	/// - none, 1 -> no replication
 	/// - 2 -> 2-way replication
@@ -118,6 +122,9 @@ fn default_sled_flush_every_ms() -> u64 {
 fn default_block_size() -> usize {
 	1048576
 }
+fn default_block_manager_background_tranquility() -> u32 {
+	2
+}
 
 /// Read and parse configuration
 pub fn read_config(config_file: PathBuf) -> Result<Config, Error> {