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From ruslan usifov <ruslan.usi...@gmail.com>
Subject Re: swap grows
Date Sat, 14 Apr 2012 13:05:17 GMT
I know:-) but this is not answer:-(. I found that on other nodes there
still about 3GB (on node with JAVA_HEAP=6GB free memory also 3GB) of free
memory but there JAVA_HEAP=5G, so this looks like some sysctl
(/proc/sys/vm???) ratio (about 10%(3 / 24 * 100)), i don't known which,
anybody can explain this situation????

2012/4/14 R. Verlangen <robin@us2.nl>

> Its recommended to disable swap entirely when you run Cassandra on a
> server.
>
>
> 2012/4/14 ruslan usifov <ruslan.usifov@gmail.com>
>
>> I forgot to say that system have 24GB of phis memory
>>
>>
>> 2012/4/14 ruslan usifov <ruslan.usifov@gmail.com>
>>
>>> Hello
>>>
>>> We have 6 node cluster (cassandra 0.8.10). On one node i increase java
>>> heap size to 6GB, and now at this node begin grows swap, but system have
>>> about 3GB of free memory:
>>>
>>>
>>> root@6wd003:~# free
>>>              total       used       free     shared    buffers     cached
>>> Mem:      24733664   21702812    3030852          0       6792   13794724
>>> -/+ buffers/cache:    7901296   16832368
>>> Swap:      1998840       2352    1996488
>>>
>>>
>>> And swap space slowly grows, but i misunderstand why?
>>>
>>>
>>> PS: We have JNA mlock, and set  vm.swappiness = 0
>>> PS: OS ubuntu 10.0.4(2.6.32-40-generic)
>>>
>>>
>>>
>>
>
>
> --
> With kind regards,
>
> Robin Verlangen
> www.robinverlangen.nl
>
>

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