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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: CFHistograms?
Date Sun, 08 May 2011 21:39:12 GMT
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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