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From Kanwar Sangha <kan...@mavenir.com>
Subject RE: Hinted handoff
Date Wed, 06 Mar 2013 21:22:47 GMT
Is this correct ?

I have Raid 0 setup for 16 TB across 8 disks. Each disk is 7.2kRPM with IOPS of 80 per disk.
Data is ~9.5 TB

So 4K * 80 * 9.5 = 3040 KB ~  23.75 Mb/s.

So basically I am limited at the disk rather than the n/w

From: Kanwar Sangha [mailto:kanwar@mavenir.com]
Sent: 06 March 2013 15:11
To: user@cassandra.apache.org
Subject: RE: Hinted handoff

After trying to bump up the "hinted_handoff_throttle_in_kb" to 1G/b per sec, It still does
not go above 25Mb/s.  Is there a limitation ?



From: Kanwar Sangha [mailto:kanwar@mavenir.com]
Sent: 06 March 2013 14:41
To: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
Subject: RE: Hinted handoff

Got the param. thanks

From: Kanwar Sangha [mailto:kanwar@mavenir.com]
Sent: 06 March 2013 13:50
To: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
Subject: Hinted handoff

Hi - Is there a way to increase the hinted handoff throughput ? I am seeing around 8Mb/s (bits).

Thanks,
Kanwar


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