/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.adminapi;
public interface EngineStatistics extends AdminObject, DomainAware {
/**
* Active Number of Sessions in the engine
* @return
*/
int getSessionCount();
/**
* Total amount memory used by buffer manager for active queries and cached queries
* @return
*/
long getTotalMemoryUsedInKB();
/**
* Total memory used by buffer manager for active plans
* @return
*/
long getMemoryUsedByActivePlansInKB();
/**
* Number of writes to disk by buffer manager to save the overflow from memory
* @return
*/
long getDiskWriteCount();
/**
* Number reads from the disk used by buffer manager that cache overflowed.
* @return
*/
long getDiskReadCount();
/**
* Total number of cache reads, includes disk and soft-cache references
* @return
*/
long getCacheReadCount();
/**
* Total number of cache writes, includes disk and soft-cache references
* @return
*/
long getCacheWriteCount();
/**
* Disk space used by buffer manager to save overflowed memory contents
* @return
*/
long getDiskSpaceUsedInMB();
/**
* Current active plan count
* @return
*/
int getActivePlanCount();
/**
* Current number of waiting plans in the queue
* @return
*/
int getWaitPlanCount();
/**
* High water mark for the waiting plans
* @return
*/
int getMaxWaitPlanWaterMark();
}