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From Tamar Fraenkel <ta...@tok-media.com>
Subject Re: Newbie Question: Cassandra consuming 100% CPU on ubuntu server
Date Mon, 20 Feb 2012 06:32:44 GMT
On 19/02/2012 21:55, Aditya Gupta wrote:
> Is there anything to do with running cassandra on a VMware ubuntu 
> instance !? I am trying Cassandra on VMware ubuntu server instance.
I am doing that for the past couple of weeks both on VMWare player and 
on ESXi in development and it works fine.
My Ubuntu is 11.10, cassandra 1.0.7.
I followed the directions in datastax site for installation.
Tamar
>
> On Sun, Feb 19, 2012 at 2:45 AM, Aditya Gupta <adynnn@gmail.com 
> <mailto:adynnn@gmail.com>> wrote:
>
>     In my case, after installing cassandra, as soon as the server is
>     started it hangs on it own (totally unresponsive).
>
>     It had openJDK-6's jdk & jre implementations.
>
>
>     On Sat, Feb 18, 2012 at 10:30 PM, Guy Incognito <dnd1066@gmail.com
>     <mailto:dnd1066@gmail.com>> wrote:
>
>         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 ?
>>
>>
>>
>>
>>
>
>
>


-- 
Tamar Fraenkel
Senior Software Engineer, TOK Media

Tel:   +972 2 6409736
Mob:  +972 54 8356490
Fax:   +972 2 5612956


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