HA 4 Nodes - 8GB/Node 2NN, 2DN, 2NM (VMs deployed on 4 different HDD and tuned JVM parameters)

TestDFSIO_results.log

----- TestDFSIO ----- : write
           Date & time: Mon May 19 11:11:17 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 15.226401361849337
Average IO rate mb/sec: 15.8214111328125
 IO rate std deviation: 3.6683988613521583
    Test exec time sec: 295.618

----- TestDFSIO ----- : write
           Date & time: Mon May 19 11:32:05 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 14.706617683825367
Average IO rate mb/sec: 15.554348945617676
 IO rate std deviation: 4.478120351863581
    Test exec time sec: 310.313

----- TestDFSIO ----- : write
           Date & time: Mon May 19 11:37:30 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 13.545528553296913
Average IO rate mb/sec: 14.312179565429688
 IO rate std deviation: 4.320058406630814
    Test exec time sec: 321.133

----- TestDFSIO ----- : write
           Date & time: Mon May 19 11:43:02 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 13.994077706314688
Average IO rate mb/sec: 15.3640718460083
 IO rate std deviation: 6.420348124608497
    Test exec time sec: 318.453

----- TestDFSIO ----- : read
           Date & time: Mon May 19 12:14:44 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 64.2149402479981
Average IO rate mb/sec: 89.74729919433594
 IO rate std deviation: 49.90260457703934
    Test exec time sec: 92.238

----- TestDFSIO ----- : read
           Date & time: Mon May 19 12:16:07 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 83.87713677005922
Average IO rate mb/sec: 158.91043090820312
 IO rate std deviation: 153.48973890318922
    Test exec time sec: 81.018

----- TestDFSIO ----- : read
           Date & time: Mon May 19 12:17:31 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 80.90025807182325
Average IO rate mb/sec: 143.55282592773438
 IO rate std deviation: 137.52306708571328
    Test exec time sec: 81.473

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:34:32 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 62.625642695658165
Average IO rate mb/sec: 68.59017181396484
 IO rate std deviation: 21.934398161752302
    Test exec time sec: 98.586

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:36:03 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 76.48008076296529
Average IO rate mb/sec: 209.80917358398438
 IO rate std deviation: 222.61817730703285
    Test exec time sec: 87.891

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:37:48 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 55.34493732185848
Average IO rate mb/sec: 64.87983703613281
 IO rate std deviation: 29.03789798870347
    Test exec time sec: 102.619

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:47:04 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 74.4241431920515
Average IO rate mb/sec: 157.29568481445312
 IO rate std deviation: 174.6003280924816
    Test exec time sec: 88.715

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:48:46 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 56.210406794713975
Average IO rate mb/sec: 60.47906494140625
 IO rate std deviation: 16.94554089301712
    Test exec time sec: 99.583

----- TestDFSIO ----- : read
           Date & time: Mon May 19 16:50:19 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 74.53230975627935
Average IO rate mb/sec: 162.26747131347656
 IO rate std deviation: 163.19152791974238
    Test exec time sec: 90.266