Increase objects table mutex count 4x and reduce max_dirty_keys to 2048

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: andll

crates/sui-core/src/authority/authority_store_tables.rs

@@ -235,7 +235,7 @@ impl AuthorityPerpetualTables {
             KeyIndexing::key_reduction(obj_ref_size, 16..(obj_ref_size - 16));
 
         let mut objects_config = KeySpaceConfig::new()
-            .with_max_dirty_keys(4096)
+            .with_max_dirty_keys(2048)
             .with_unloaded_iterator(true)
             .with_value_cache_size(value_cache_size);
         if matches!(db_options_override, Some(options) if options.is_validator) {
@@ -247,7 +247,7 @@ impl AuthorityPerpetualTables {
                 "objects".to_string(),
                 ThConfig::new_with_config_indexing(
                     object_indexing,
-                    mutexes * 4,
+                    mutexes * 16,
                     KeyType::uniform(1),
                     objects_config,
                 ),