hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From baran cakici <barancak...@gmail.com>
Subject TestDFSIO Bechmark
Date Tue, 03 May 2011 10:26:08 GMT
Hi,

I want to know I/O Performance of my Hadoop Cluster. Because of that I ran
test.jar, hier is my Results;

----- TestDFSIO ----- : write
Date & time: Mon May 02 14:38:29 CEST 2011
Number of files: 10
Total MBytes processed: 10000
Throughput mb/sec: 12.809033955468113
Average IO rate mb/sec: 13.16771411895752
IO rate std deviation: 2.059995952372142
Test exec time sec: 964.4

----- TestDFSIO ----- : read
Date & time: Mon May 02 15:00:10 CEST 2011
Number of files: 10
Total MBytes processed: 10000
Throughput mb/sec: 12.938200684430816
Average IO rate mb/sec: 14.908231735229492
IO rate std deviation: 4.231364683566859
Test exec time sec: 941.601

read-speed and write-speed almost same!!! Why can't I read faster?

thanks,

Baran

Mime
View raw message