cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hanson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-7549) Heavy Disk Read I/O
Date Tue, 15 Jul 2014 09:26:04 GMT
Hanson created CASSANDRA-7549:
---------------------------------

             Summary: Heavy Disk Read I/O
                 Key: CASSANDRA-7549
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7549
             Project: Cassandra
          Issue Type: Improvement
         Environment: Cassandra 2.0.6
            Reporter: Hanson


We observed heavy disk Read I/O, sometimes almost ~100% disk I/O %util. The block size for
Disk Read seems too small per “iostat”: 
	- DB Query: ~40KB per read
	- SSTables Compaction : ~120KB per read

Could it use larger block size for Disk Read? (from Cassandra or OS disk driver tuning)




--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message