Created
October 30, 2010 12:47
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import java.io.BufferedReader; | |
import java.io.FileReader; | |
import java.io.IOException; | |
import java.util.Arrays; | |
import org.apache.commons.math.stat.descriptive.DescriptiveStatistics; | |
import com.google.common.base.CharMatcher; | |
import com.mongodb.BasicDBObject; | |
import com.mongodb.DB; | |
import com.mongodb.DBCollection; | |
import com.mongodb.DBCursor; | |
import com.mongodb.DBObject; | |
import com.mongodb.Mongo; | |
import com.mongodb.MongoOptions; | |
import com.mongodb.ServerAddress; | |
public class ReadBenchmark { | |
private static CharMatcher stripQuotes = CharMatcher.is('"'); | |
public static void main(String[] args) throws IOException { | |
// Connect to mongoDB | |
MongoOptions mo = new MongoOptions(); | |
mo.autoConnectRetry = true; | |
Mongo mongo = new Mongo(Arrays.asList(new ServerAddress("data-node-1"), new ServerAddress("data-node-2"), new ServerAddress("data-node-3")), mo); | |
DB db = mongo.getDB("datamining"); | |
db.setReadOnly(true); | |
DBCollection docs = db.getCollection("canonical_documents"); | |
for (int i=0; i<10000; i++) { | |
// Create new stats collector | |
DescriptiveStatistics stats = new DescriptiveStatistics(); | |
// Run though gets | |
BufferedReader r = new BufferedReader(new FileReader(args[0])); | |
for (String id = r.readLine(); id != null; id = r.readLine()) { | |
try { | |
// Strip quotes | |
id = stripQuotes.trimFrom(id); | |
// Do stats on response time | |
DBObject key = new BasicDBObject(); | |
key.put("id", id); | |
// Benchmark this | |
long time = System.nanoTime(); | |
DBCursor results = docs.find(key); | |
// Get the results | |
int n = 0; | |
for (DBObject o: results) { | |
System.out.println(o); | |
n++; | |
} | |
results.close(); | |
long delta = System.nanoTime() - time; | |
stats.addValue(delta); | |
} catch (RuntimeException e) { | |
System.out.println(e); | |
continue; | |
} | |
} | |
// Dump out stats | |
System.out.println(i + ":" + stats.getMean()/1000 + ", " + stats.getPercentile(99.00)/1000); | |
} | |
} | |
} |
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