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From: Nick Bailey <nick@datastax.com>
Date: Wed, 18 Sep 2013 10:50:41 -0500
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 <CALHkrw-PKXFLtJ67R1jHO-C1qjBwUFp6SXiYMsB_o_KrDa0BfQ@mail.gmail.com>
Subject: Re: datastax ops center shows a lot of activity when idle
To: user@cassandra.apache.org
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OpsCenter's writes for monitoring data will show up in the request/latency
graphs yes. 100/sec may be reasonable depending on the number of nodes and
columnfamilies OpsCenter is monitoring.


On Wed, Sep 18, 2013 at 7:15 AM, Alexander Shutyaev <shutyaev@gmail.com>wrote:

> Hi all!
>
> We have experienced a strange issue with datastax opscenter. It showed
> much more write requests that we should actually have. We've set everything
> up on an isolated node and there without any activity it showed 100+ writes
> per second. Is this some opscenter bug? Does it maybe count some internal
> cassandra operations? Or maybe the OpsCenter itselft generates such load
> because it's saving its monitoring data to the same cassandra it's actually
> monitoring?
>
> Thanks in advance!
>

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<div dir=3D"ltr">OpsCenter&#39;s writes for monitoring data will show up in=
 the request/latency graphs yes. 100/sec may be reasonable depending on the=
 number of nodes and columnfamilies OpsCenter is monitoring.</div><div clas=
s=3D"gmail_extra">

<br><br><div class=3D"gmail_quote">On Wed, Sep 18, 2013 at 7:15 AM, Alexand=
er Shutyaev <span dir=3D"ltr">&lt;<a href=3D"mailto:shutyaev@gmail.com" tar=
get=3D"_blank">shutyaev@gmail.com</a>&gt;</span> wrote:<br><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex">

<div dir=3D"ltr">Hi all!<div><br></div><div>We have experienced a strange i=
ssue with datastax opscenter. It showed much more write requests that we sh=
ould actually have. We&#39;ve set everything up on an isolated node and the=
re without any activity it showed 100+ writes per second. Is this some opsc=
enter bug? Does it maybe count some internal cassandra operations? Or maybe=
 the OpsCenter itselft generates such load because it&#39;s saving its moni=
toring data to the same cassandra it&#39;s actually monitoring?</div>


<div><br></div><div>Thanks in advance!</div></div>
</blockquote></div><br></div>

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