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From: Ran Tavory <rantav@gmail.com>
Date: Tue, 18 May 2010 07:33:24 +0300
Message-ID: <AANLkTinzyZml62LtW2X1npENIu_GDWgldINNjf0JUdId@mail.gmail.com>
Subject: Re: JMX metrics for monitoring
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=0016e68ee8fcbbe0dd0486d6d874

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There are many, but here's what I found useful so far:
Per CF you have:
- Recent read/write latency
- PendingTasks
- Read/Write count

Globally you have, for each of the stages
(e.g. org.apache.cassandra.concurrent:type=ROW-READ-STAGE):
- PendingTasks
- ActiveCount

... and as you go you'll find more

On Tue, May 18, 2010 at 1:02 AM, Maxim Kramarenko
<maximkr@trackstudio.com>wrote:

> Hi!
>
> Which JMX metrics do you use for Cassandra monitoring ? Which values can be
> used for alerts ?
>

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<div dir=3D"ltr">There are many, but here&#39;s what I found useful so far:=
<br>Per CF you have:<br>- Recent read/write latency<br>-=C2=A0PendingTasks<=
br>- Read/Write count<div><br>Globally you have, for each of the stages (e.=
g.=C2=A0org.apache.cassandra.concurrent:type=3DROW-READ-STAGE):<br>

- PendingTasks<br>- ActiveCount<br><br>... and as you go you&#39;ll find mo=
re<br><div><font class=3D"Apple-style-span" face=3D"tahoma, verdana, helvet=
ica, arial, sans-serif"><span class=3D"Apple-style-span" style=3D"font-size=
: x-small; "><font class=3D"Apple-style-span" face=3D"arial"><span class=3D=
"Apple-style-span" style=3D"font-size: small;"><br>

</span></font></span></font></div><div><div class=3D"gmail_quote">On Tue, M=
ay 18, 2010 at 1:02 AM, Maxim Kramarenko <span dir=3D"ltr">&lt;<a href=3D"m=
ailto:maximkr@trackstudio.com">maximkr@trackstudio.com</a>&gt;</span> wrote=
:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">Hi!<br>
<br>
Which JMX metrics do you use for Cassandra monitoring ? Which values can be=
 used for alerts ?<br>
</blockquote></div><br></div></div></div>

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