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From Rob Coli <>
Subject Re: Can these stats be right?
Date Wed, 07 Apr 2010 19:26:43 GMT
On 4/7/10 12:16 PM, Mark Jones wrote:
>                  Read Latency: NaN ms.

outs.println("\t\tRead Latency: " + String.format("%01.3f", 
cfstore.getRecentReadLatencyMicros() / 1000) + "

This call is telling you the (Read|Write|Range)Latency since the last 
time it was sampled. The other measure of latency is a value since the 
node started, exposed via the JMX interface as 

If you are sure to not restart your node while doing your testing, this 
should provide you with the latency number you are looking for.

The JmxInterface wiki page is currently missing a section on the per-CF 
attributes, but as cfstats shows, they are available via the JMX 
interface as well.


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