tmusabbir · January 3, 2016 00:19
diff --git a/a#Cassandra Performance Tuning b/a#Cassandra Performance Tuning
 Cassandra Performance Tuning
diff --git a/change-commit-log-location-1 b/change-commit-log-location-1
 root@ip-10-0-0-24:[/root]
 $ df -h
 Filesystem            Size  Used Avail Use% Mounted on
 /dev/sda1             124G   78G   40G  67% /
 /dev/sda2             50G   2G   46G  1% /mnt/commitlog
 none                  3.8G 1007M  2.8G  27% /dev/shm
diff --git a/change-commit-log-location-2 b/change-commit-log-location-2
 root@ip-10-0-0-24:[/root]
 $ chown cassandra:cassandra /mnt/commitlog
 root@ip-10-0-0-24:[/root]
 $ chmod 755 /mnt/commitlog
diff --git a/nodetool-cfstats b/nodetool-cfstats
 [root@ip-10-0-0-57 ~]# bin/nodetool --host ip-10-0-0-57 cfstats
 Column Family: Cloud_For_Beginners
 ...
 Key cache capacity: 200000
 Key cache size: 200000
 Key cache hit rate:  0.568
diff --git a/update_keys_cached b/update_keys_cached
 update column family cloud_for_beginners with keys_cached = 300000
diff --git a/update_rows_cached b/update_rows_cached
 update column family cloud_for_beginners with rows_cached = 1000
	root@ip-10-0-0-24:[/root]
	$ df -h
	Filesystem Size Used Avail Use% Mounted on
	/dev/sda1 124G 78G 40G 67% /
	/dev/sda2 50G 2G 46G 1% /mnt/commitlog
	none 3.8G 1007M 2.8G 27% /dev/shm
	root@ip-10-0-0-24:[/root]
	$ chown cassandra:cassandra /mnt/commitlog
	root@ip-10-0-0-24:[/root]
	$ chmod 755 /mnt/commitlog
	[root@ip-10-0-0-57 ~]# bin/nodetool --host ip-10-0-0-57 cfstats
	Column Family: Cloud_For_Beginners
	...
	Key cache capacity: 200000
	Key cache size: 200000
	Key cache hit rate: 0.568