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From Aaron Morton <aa...@thelastpickle.com>
Subject Re: Key cache hit rate
Date Fri, 15 Apr 2011 23:00:56 GMT
Move the decimal point 4 places to the left. It's the percent of your queries that get a hit
from the key cache . 

Aaron
On 16/04/2011, at 6:25 AM, mcasandra <mohitanchlia@gmail.com> wrote:

> 
> How to intepret  "Key cache hit rate"? What does this no mean?
> 
> 
> Keyspace: StressKeyspace
>        Read Count: 87579
>        Read Latency: 11.792417360326105 ms.
>        Write Count: 179749
>        Write Latency: 0.009272318622078566 ms.
>        Pending Tasks: 0
>                Column Family: StressStandard
>                SSTable count: 59
>                Space used (live): 52432078035
>                Space used (total): 52432078035
>                Memtable Columns Count: 229
>                Memtable Data Size: 114103248
>                Memtable Switch Count: 375
>                Read Count: 87579
>                Read Latency: NaN ms.
>                Write Count: 179751
>                Write Latency: 0.007 ms.
>                Pending Tasks: 0
>                Key cache capacity: 1000000
>                Key cache size: 78576
>                Key cache hit rate: 3.8880248833592535E-4
>                Row cache: disabled
>                Compacted row minimum size: 182786
>                Compacted row maximum size: 5839588
>                Compacted row mean size: 532956
> 
> 
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Key-cache-hit-rate-tp6277236p6277236.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.

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