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Posted to user@cassandra.apache.org by Jonathan Haddad <jo...@gmail.com> on 2013/09/01 00:10:01 UTC
Re: Low Row Cache Request
9/12 = .75
It's a rate, not a percentage.
On Sat, Aug 31, 2013 at 2:21 PM, Sávio Teles <sa...@lupa.inf.ufg.br>
wrote:
> I'm running one Cassandra node -version 1.2.6- and I *enabled* the *row
> cache* with *1GB*.
> But looking the Cassandra metrics on JConsole, *Row Cache Requests* are
> very *low* after a high number of queries (about 12 requests).
> RowCache metrics:
> *Capacity: 1GB*
> *Entries: 3
> *
> *HitRate: 0.75
> *
> *Hits: 9
> *
> *Requests: 12
> *
> *Size: 191630
> *
> Something wrong?
> --
> Atenciosamente,
> Sávio S. Teles de Oliveira
> voice: +55 62 9136 6996
> http://br.linkedin.com/in/savioteles
> Mestrando em Ciências da Computação - UFG
> Arquiteto de Software
> Laboratory for Ubiquitous and Pervasive Applications (LUPA) - UFG
Re: Low Row Cache Request
Posted by Sávio Teles <sa...@lupa.inf.ufg.br>.
Yes, it is! I've fixed the problem. I miss the caching property set to
'ALL' to create the columily family.
2013/8/31 Jonathan Haddad <jo...@gmail.com>
> 9/12 = .75
>
> It's a rate, not a percentage.
>
>
> On Sat, Aug 31, 2013 at 2:21 PM, Sávio Teles <sa...@lupa.inf.ufg.br>wrote:
>
>> I'm running one Cassandra node -version 1.2.6- and I *enabled* the *row
>> cache* with *1GB*.
>>
>> But looking the Cassandra metrics on JConsole, *Row Cache Requests* are
>> very *low* after a high number of queries (about 12 requests).
>>
>> RowCache metrics:
>>
>> *Capacity: 1GB*
>> *Entries: 3
>> *
>> *HitRate: 0.75
>> *
>> *Hits: 9
>> *
>> *Requests: 12
>> *
>> *Size: 191630
>> *
>>
>> Something wrong?
>>
>>
>>
>>
>> --
>> Atenciosamente,
>> Sávio S. Teles de Oliveira
>> voice: +55 62 9136 6996
>> http://br.linkedin.com/in/savioteles
>> Mestrando em Ciências da Computação - UFG
>> Arquiteto de Software
>> Laboratory for Ubiquitous and Pervasive Applications (LUPA) - UFG
>>
>
>
--
Atenciosamente,
Sávio S. Teles de Oliveira
voice: +55 62 9136 6996
http://br.linkedin.com/in/savioteles
Mestrando em Ciências da Computação - UFG
Arquiteto de Software
Laboratory for Ubiquitous and Pervasive Applications (LUPA) - UFG