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From S Ahmed <sahmed1...@gmail.com>
Subject Re: Problems running Cassandra 0.6.1 on large EC2 instances.
Date Fri, 21 May 2010 19:53:19 GMT
curious how did things turn out?

On Tue, May 18, 2010 at 1:38 PM, Curt Bererton <curt@zipzapplay.com> wrote:

> We only have a few CFs (6 or 7).  I've increased the MemtableThroughputInMB
> and MemtableOperationsInMillions as per your suggestions. Do we really
> need a swap file though? I suppose it can't hurt, but with my problem in
> particular we weren't maxing out main memory.
>
> We'll be running another test today and see if the settings changes
> proposed so far fix our problem ( I hope so ).
>
> Best,
> Curt
>
>
> On Tue, May 18, 2010 at 5:59 AM, Lee Parker <lee@socialagency.com> wrote:
>
>> How many different CFs do you have?  If you only have a few, I would
>> highly recommend increasing the MemtableThroughputInMB and MemtableOperationsInMillions.
>>  We only have to CFs and I have it set at 256MB and 2.5m. Since most of our
>> columns are relatively small, these values are practically equivalent to
>> each other.  I would also recommend dropping your heap space to 6G and
>> adding a swap file.  In our case, the large EC2 instances didn't have any
>> swap setup by default.
>>
>> Lee Parker
>>
>>
>>
>

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