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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Update of "CassandraHardware" by JonathanEllis
Date Thu, 19 Nov 2009 16:32:47 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "CassandraHardware" page has been changed by JonathanEllis.
http://wiki.apache.org/cassandra/CassandraHardware?action=diff&rev1=1&rev2=2

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  The most recently written data resides in memory tables (aka [[MemtableThresholds|memtables]]),
but older data that has been flushed to disk can be kept in the OS's file-system cache. In
other words, ''the more memory, the better'', with 1GB being the minimum recommended.
  
  === CPU ===
- Many workloads will actually be CPU-bound in Cassandra before being memory-bound.  Cassandra
is highly concurrent and will make good use of however many cores you can give it.
+ Many workloads will actually be CPU-bound in Cassandra before being memory-bound.  Cassandra
is highly concurrent and will make good use of however many cores you can give it.  For high-end
clusters, quad- or 8-core boxes are good.  If you're running on virtualized machines, consider
using a provider such as Rackspace Cloud Servers that allows CPU bursting.
  
  
  === Disk ===

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