http://www.datastax.com/support-forums/topic/about-performance-data-collected-in-opscenter Software, Support, and Training for Apache Cassandra en-US Wed, 22 May 2013 09:08:41 +0000 http://bbpress.org/?v=1.0.3 q http://www.datastax.com/support-forums/search.php http://www.datastax.com/support-forums/topic/about-performance-data-collected-in-opscenter#post-789 Wed, 30 Nov 2011 18:27:02 +0000 nickmbailey 789@http://www.datastax.com/support-forums/ <p>The rollups60 column family stores 1 minute data points and corresponds to 1min_ttl.<br /> Rollups300 stores 5 minute data points and corresponds to 5min_ttl<br /> Rollups7200 stores 2 hour data points and corresponds to 2hr_ttl.<br /> Rollups86400 is currently unused and should remain empty. It may be used in the future for storing 24 hour data points. </p> http://www.datastax.com/support-forums/topic/about-performance-data-collected-in-opscenter#post-784 Wed, 30 Nov 2011 13:43:03 +0000 Anonymous 784@http://www.datastax.com/support-forums/ <p>1.We would like to confirm how to calculate the size of KeySpace OpsCenter that is created on each Cassandra node.<br /> FYI, in the customer’s test environment, KeySpace size have been increasing day by day.</p> <p>2.According to the document of opscenter, it is said that old data is deleted by aging process. the aging is configurable by the setting in opscenterd.conf.</p> <p>　 # Expire 1 minute data points after 7 days<br /> 　 #1min_ttl = 604800<br /> 　 # Expire 5 minute data points after 4 weeks (28 days)<br /> 　 #5min_ttl = 2419200<br /> 　 # Expire 2 hour data points after 365 days<br /> 　 #2hr_ttl = 31536000</p> <p>What is the relation between “Column Family” that is included OpsCenter Keyspace and the above keys?</p> <p>　 rollups60<br /> 　 rollups300<br /> 　 rollups7200<br /> 　 rollups86400　(Currently, this CF size is 0.) </p>