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From Guy Incognito <dnd1...@gmail.com>
Subject Re: Newbie Question: Cassandra consuming 100% CPU on ubuntu server
Date Sat, 18 Feb 2012 17:00:47 GMT
perhaps entirely unrelated, but somebody was asking about lockups on EC2 
yesterday and found: http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs

On 18/02/2012 14:58, Aditya Gupta wrote:
> Am I installing it the right way ? While installing I didn't verify 
> the signatures using public key.
>
> On Sat, Feb 18, 2012 at 8:21 PM, Aditya Gupta <adynnn@gmail.com 
> <mailto:adynnn@gmail.com>> wrote:
>
>     No data at all. just a fresh installation
>
>
>     On Sat, Feb 18, 2012 at 6:57 PM, R. Verlangen <robin@us2.nl
>     <mailto:robin@us2.nl>> wrote:
>
>         You might want to check your Cassandra logs, they contain
>         important information that might lead you to the actual cause
>         of the problems.
>
>         2012/2/18 Aditya Gupta <adynnn@gmail.com
>         <mailto:adynnn@gmail.com>>
>
>             Thanks! But what about the 100% cpu consumption that
>             is causing the server to hang?
>
>
>             On Sat, Feb 18, 2012 at 6:19 PM, Watanabe Maki
>             <watanabe.maki@gmail.com <mailto:watanabe.maki@gmail.com>>
>             wrote:
>
>                 I haven't use the packaged kit, but Cassandra uses
>                 half of physical memory on your system by default.
>                 You need to edit cassandra-env.sh to decrease heap size.
>                 Update MAX_HEAP_SIZE and NEW_HEAP_SIZE and restart.
>
>                 From iPhone
>
>
>                 On 2012/02/18, at 20:40, Aditya Gupta
>                 <adynnn@gmail.com <mailto:adynnn@gmail.com>> wrote:
>
>>                 I just installed Cassandra on my ubuntu server by
>>                 adding the following to the sources list:
>>
>>                     deb http://www.apache.org/dist/cassandra/debian
>>                     10x main
>>                     deb-src
>>                     http://www.apache.org/dist/cassandra/debian 10x main
>>
>>
>>                 Soon after install I started getting OOM errors &
>>                 then the server became unresponsive. I added more RAM
>>                 to the server but found that cassandra was consuming
>>                 100% CPU & 1GB RAM as soon the server was being
>>                 started. Why is this happening & how can get it to
>>                 normal conditions ?
>
>
>
>
>


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