package ch.usi.da.paxos.ring;
/*
* Copyright (c) 2013 Università della Svizzera italiana (USI)
*
* This file is part of URingPaxos.
*
* URingPaxos is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* URingPaxos 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with URingPaxos. If not, see <http://www.gnu.org/licenses/>.
*/
import org.apache.log4j.Logger;
/**
* Name: LearnerStatsWriter<br>
* Description: <br>
*
* Creation date: Mar 09, 2013<br>
* $Id$
*
* @author Samuel Benz benz@geoid.ch
*/
public class LearnerStatsWriter implements Runnable {
private final static Logger logger = Logger.getLogger("ch.usi.da.paxos.Stats");
private long start_time = -1;
private long last_time = System.nanoTime();
private final LearnerRole learner;
private final int ringID;
private long last_deliver_count = 0;
private long last_deliver_bytes = 0;
public LearnerStatsWriter(RingManager ring, LearnerRole learner) {
this.learner = learner;
ringID = ring.getRingID();
}
@Override
public void run() {
boolean run = logger.isInfoEnabled();
while(run){
if(start_time < 0 && learner.deliver_count > 0){
start_time = System.nanoTime();
logger.debug("LearnerStatsWriter set start time.");
}
try {
long time = System.nanoTime();
long deliver_count = learner.deliver_count - last_deliver_count;
long deliver_bytes = learner.deliver_bytes - last_deliver_bytes;
float t = (float)(time-last_time)/(1000*1000*1000);
float deliver_bwm = (float)8*(deliver_bytes/t)/1024/1024; // Mbit/s
float t2 = (float)(time-start_time)/(1000*1000*1000);
float deliver_bw = (float)8*(learner.deliver_bytes/t2)/1024/1024; // Mbit/s
logger.info(String.format("Learner %d delivered %.1f values/s %.2f Mbit/s (avg: %.2f Mbit/s) (wait: %d) (count: %d) (batch_count: %d)",ringID,deliver_count/t,deliver_bwm,deliver_bw,learner.getDecisions().size(),learner.deliver_count,learner.batch_count));
last_deliver_count += deliver_count;
last_deliver_bytes += deliver_bytes;
last_time = time;
Thread.sleep(1000);
if(learner.terminate){
break;
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
break;
}
}
}
}