cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Kanwar Sangha <>
Subject Read IO
Date Thu, 21 Feb 2013 05:52:09 GMT
Hi - Can someone explain the worst case IOPS for a read ? No key cache, No row cache, sampling
rate say 512.

1)      Bloom filter will be checked to see existence of key (In RAM)

2)      Index filer sample (IN RAM) will be checked to find approx. location in index file
on disk

3)      1 IOPS to read the actual index file on disk (DISK)

4)      1 IOPS to get the data from the location in the sstable (DISK)

Is this correct ?

View raw message