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From Erick Erickson <>
Subject Re: SOLR 4.2.1 - High Resident Memory Usage
Date Tue, 27 Aug 2013 22:17:46 GMT
Ok, this whole topic usually gives me heartburn. So I'll just point out
an interesting blog on this from Mike McCandless:

At least tuning swappiness to 0 will tell you whether it's real or phantom.
Of course I'd be trying it on a test machine, not prod!


On Tue, Aug 27, 2013 at 5:50 PM, Shawn Heisey <> wrote:

> On 8/27/2013 3:32 PM, vsilgalis wrote:
>> thanks for the quick reply.
>> I made to rule out what I could around how Linux is handling this stuff.
>> Yes I'm using the default swappiness setting of 60, but at this point it
>> looks like the machine is swapping now because of low memory.
>> Here is the vmstat and free -m results:
>> <http://lucene.472066.n3.****
>> vmstat_free_output.png<>
>> >
>> Here is my top sorted by mem:
>> <http://lucene.472066.n3.****output.png<>
>> >
>> Again, I feel like I might be missing something but not sure what.
> You are right, it is definitely swapping, and it's more than a little bit.
>  I don't see any indication on the top output that anything other than Java
> is using a lot of memory, so I don't know what's using the swap.  Just to
> be sure we have the right info, can you give me the output of the following
> command?
> ps aux --sort -rss | cut -c1-80 | head -n 10
> This looks like your Java (or maybe something else on the box) may be
> misbehaving very badly.  Can you go to your Solr UI dashboard and get me a
> screenshot?  I need all the info from the JVM-Memory and JVM sections,
> including the whole JVM section.  If you have a lot of jvm args, you may
> need to scroll down to see them all at once.
> Thanks,
> Shawn

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