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From Subrahmanya Harve <subrahmanyaha...@gmail.com>
Subject Re: CFHistograms?
Date Mon, 09 May 2011 02:11:28 GMT
Is there a more detailed document available on CF Histograms?

On Sun, May 8, 2011 at 2:39 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> Timeouts (hence errors) will register at the rpc timeout value.
>
> On Sat, May 7, 2011 at 1:27 PM, Josep Blanquer <blanquer@rightscale.com>
> wrote:
> > I believe the offset value of Writes and Reads are in *micro*seconds
> right?
> > (that page talks about *milli*seconds)
> >
> > Also, are any timeouts or errors reflected in those times or just
> successful
> > operations? if not, is there any JMX or other tool to keep track of them?
> >
> >  Josep M.
> >
> > On Fri, May 6, 2011 at 9:09 AM, Jonathan Ellis <jbellis@gmail.com>
> wrote:
> >>
> >> Those are updated at compaction time.
> >>
> >> On Thu, May 5, 2011 at 11:38 PM, Xaero S <xaeros.s1@gmail.com> wrote:
> >> >
> >> > Can someone point me to a document that explains how to interpret
> >> > CFHistograms output? i went through
> >> >
> >> >
> http://narendrasharma.blogspot.com/2011/04/cassandra-07x-understanding-output-of.html
> >> > which is a good beginning, but was wondering if there was anything
> more
> >> > detailed. For e.g when i run CFHistograms, i see rowsize and
> columncount
> >> > items in the table always 0 (which cant be right?)
> >> >
> >> > -Xaero
> >> >
> >>
> >>
> >>
> >> --
> >> Jonathan Ellis
> >> Project Chair, Apache Cassandra
> >> co-founder of DataStax, the source for professional Cassandra support
> >> http://www.datastax.com
> >
> >
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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