Re: TestDFSIO delivers bad values of "throughput" and "average IO rate"

["sendy.seftiandy" <sn...@yahoo.com>]

after read this thread, i'm still confused. in my cluster when it has 1
master + 3 slaves with nrFiles=3 and total MBytes processed = 1000, the
throughput is equal with when it has 1 master+6slaves with nrFiles=6, the
total MBytes processed = 1000

can i  multiplied the throughpout from first try by the number of slaves (3)
and compare that with the throughput from second try multiplied by the
number of its slaves 

i really need the answer, thank you very much
-- 
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Re: TestDFSIO delivers bad values of "throughput" and "average IO rate"

[Bharath Mundlapudi <bh...@yahoo.com>]

what is the fileSize you are specifying for TestDFSIO?

I think, If you haven't specified this value then default is 1MB. This might cause client bottleneck. 


-Bharath



________________________________
From: sendy.seftiandy <sn...@yahoo.com>
To: core-user@hadoop.apache.org
Sent: Saturday, May 21, 2011 11:35 PM
Subject: Re: TestDFSIO delivers bad values of "throughput" and "average IO rate"


after read this thread, i'm still confused. in my cluster when it has 1
master + 3 slaves with nrFiles=3 and total MBytes processed = 1000, the
throughput is equal with when it has 1 master+6slaves with nrFiles=6, the
total MBytes processed = 1000

can i  multiplied the throughpout from first try by the number of slaves (3)
and compare that with the throughput from second try multiplied by the
number of its slaves 

i really need the answer, thank you very much
-- 
View this message in context: http://old.nabble.com/Re%3A-TestDFSIO-delivers-bad-values-of-%22throughput%22-and-%22average-IO-rate%22-tp21322404p31673904.html
Sent from the Hadoop core-user mailing list archive at Nabble.com.