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From Omid Aladini <omidalad...@gmail.com>
Subject Re: Resident size growth
Date Mon, 09 Apr 2012 15:01:06 GMT
Thanks. Yes it's due to mmappd SSTables pages that count as resident size.

Jeremiah: mmap isn't through JNA, it's via java.nio.MappedByteBuffer I think.

-- Omid

On Mon, Apr 9, 2012 at 4:15 PM, Jeremiah Jordan
<JEREMIAH.JORDAN@morningstar.com> wrote:
> He says he disabled JNA.  You can't mmap without JNA can you?
>
> On Apr 9, 2012, at 4:52 AM, aaron morton wrote:
>
> see http://wiki.apache.org/cassandra/FAQ#mmap
>
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 9/04/2012, at 5:09 AM, ruslan usifov wrote:
>
> mmap sstables? It's normal
>
> 2012/4/5 Omid Aladini <omidaladini@gmail.com>
>>
>> Hi,
>>
>> I'm experiencing a steady growth in resident size of JVM running
>> Cassandra 1.0.7. I disabled JNA and off-heap row cache, tested with
>> and without mlockall disabling paging, and upgraded to JRE 1.6.0_31 to
>> prevent this bug [1] to leak memory. Still JVM's resident set size
>> grows steadily. A process with Xmx=2048M has grown to 6GB resident
>> size and one with Xmx=8192M to 16GB in a few hours and increasing. Has
>> anyone experienced this? Any idea how to deal with this issue?
>>
>> Thanks,
>> Omid
>>
>> [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7066129
>
>
>
>

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