Hi Zhu,
             I did not got that SSDs  have read latency of 0.1ms.Since there is only one data file
I would expect the read of any key to take 0.1ms may be I am missing something
please explain.
Thanks
Anurag

On Sun, Apr 3, 2011 at 5:01 AM, Zhu Han <schumi.han@gmail.com> wrote:

best regards,
Zhu Han



On Sun, Apr 3, 2011 at 9:21 AM, Anurag Gujral <anurag.gujral@gmail.com> wrote:
Hi All,
           I have loaded data into cassandra using batch processing  the response times for reads are in the range of  0.8 ms but I am using SSDs. so I expect the read times to be even faster.

Does your working set fit in the memory? If so, SSD is not helpful to reduce the latency.
 
Every time I run compaction the latency numbers reduce to 0.3 to 0.4ms  , is there a way I can run compaction once with some parameters 
so that i can get the same numbers 0.3 to 0.4 ms for reads.
Please note that I am not loading the data again.

Thanks
Anurag