/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.tdb.mgt;
/** Static information relating to TDB */
public interface TDBSystemInfoMBean
{
/** Size, in bytes, of a disk block */
public int getBlockSize() ;
/** Size of a memory-mapped file segment */
public int getSegmentSize() ;
// /** Number of adds/deletes between calls to sync (-ve to disable) */
// public int getSyncTick() ;
/** Size of Node to NodeId cache.
* Used to map from Node to NodeId spaces.
* Used for loading and for query preparation.
*/
public int getNode2NodeIdCacheSize() ;
/** Size of NodeId to Node cache.
* Used to map from NodeId to Node spaces.
* Used for retriveing results.
*/
public int getNodeId2NodeCacheSize() ;
/** Size of NodeTable lookup miss cache
*/
public int getNodeMissCacheSize() ;
/** Size of the delayed-write block cache (32 bit systems only) (per file) */
public int getBlockWriteCacheSize() ;
/** Size of read block cache (32 bit systems only). Increase JVM size as necessary. Per file. */
public int getBlockReadCacheSize() ;
}