Hi Rita, SliveTest can help you measure the number of reads / writes / deletes / ls / appends per second your NameNode can handle.
DFSIO can be used to help you measure the amount of throughput. Both these tests are actually very flexible and have a plethora of options to help you test different facets of performance. In my experience, you actually have to be very careful and understand what the tests are doing for the results to be sensible. HTH Ravi ________________________________ From: Rita <rmorgan...@gmail.com> To: "<common-user@hadoop.apache.org>" <common-user@hadoop.apache.org> Sent: Monday, October 22, 2012 7:23 AM Subject: Re: measuring iops Anyone? On Sun, Oct 21, 2012 at 8:30 AM, Rita <rmorgan...@gmail.com> wrote: > Hi, > > Was curious if there was a method to measure the total number of IOPS (I/O > operations per second) on a HDFS cluster. > > > > -- > --- Get your facts first, then you can distort them as you please.-- > -- --- Get your facts first, then you can distort them as you please.--
