Re: Heap Settings suggestions

2010-10-07 Thread kannan chandrasekaran
Good point.. Thanks to both of you for the replies. Kannan From: Matthew Dennis To: user@cassandra.apache.org Sent: Thu, October 7, 2010 4:59:28 PM Subject: Re: Heap Settings suggestions Keep in mind that .7 and on will have per-CF settings for most things

Re: Heap Settings suggestions

2010-10-07 Thread Matthew Dennis
Keep in mind that .7 and on will have per-CF settings for most things so there will be even more control over the the tuning... On Oct 7, 2010 3:10 PM, "Peter Schuller" wrote: >> What if there is more than one keyspace in the system ? Assuming each >> keyspace has the same number of column familie

Re: Heap Settings suggestions

2010-10-07 Thread Peter Schuller
> What if there is more than one keyspace in the system ? Assuming each > keyspace has the same number of column families, Can I linearly scale the > above recommendation to the number of keyspaces in the system .ie, if the > "X" is the heap size for a single keyspace and there are "Y" keyspaces, I

Heap Settings suggestions

2010-10-07 Thread kannan chandrasekaran
>From the Cassandra documentation @ riptano I see the following recommendation for Heap size setting MemtableThroughputInMB * 3 * (number of ColumnFamilies) + 1G + (size of internal caches) What if there is more than one keyspace in the system ? Assuming each keyspace has the same number of c