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From Jay Svc <jaytechg...@gmail.com>
Subject Re: Does Memtable resides in Heap?
Date Tue, 16 Apr 2013 01:43:22 GMT
Thanks Vitor,

So as per recommendation its only efficient when heap size is below 8GB.
How about when we have more RAM, does that rest of the RAM can be left for
OS to make use?

How about the bloom filter and index samples, are they part of off-heap?

Thank you for your response.

Regards,
Jay


On Thu, Apr 11, 2013 at 10:35 PM, Viktor Jevdokimov <
Viktor.Jevdokimov@adform.com> wrote:

> Memtables resides in heap, write rate impacts GC, more writes - more
> frequent and longer ParNew GC pauses.
>
>
> From: Jay Svc [mailto:jaytechgeek@gmail.com]
> Sent: Friday, April 12, 2013 01:03
> To: user@cassandra.apache.org
> Subject: Does Memtable resides in Heap?
>
> Hi Team,
>
> I have got this 8GB of RAM out of that 4GB allocated to Java Heap. My
> question is the size of Memtable does it contribute to heap size? or they
> are part of off-heap?
>
> Does bigger Memtable would have impact on GC and overall memory management?
>
> I am using DSE 3.0 / Cassandra 1.1.9.
>
> Thanks,
> Jay
>
> Best regards / Pagarbiai
>
> Viktor Jevdokimov
> Senior Developer
>
> Email: Viktor.Jevdokimov@adform.com
> Phone: +370 5 212 3063
> Fax: +370 5 261 0453
>
> J. Jasinskio 16C,
> LT-01112 Vilnius,
> Lithuania
>
>
>
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