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From Yang <teddyyyy...@gmail.com>
Subject Re: Read times on Cassandra
Date Sun, 11 Sep 2011 04:09:46 GMT
Thanks , this link is very useful.

to add to that, I just found that the "sar -g " command is very
helpful, it shows paging requests.

On Thu, Sep 8, 2011 at 9:02 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
> What is your bottleneck?
>
> spyced.blogspot.com/2010/01/linux-performance-basics.html
>
> On Thu, Sep 8, 2011 at 10:14 AM, Ben Ashton <ben@bossastudios.com> wrote:
>> Hi Guys,
>>
>> I have our multi DC setup running on EC2.
>>
>> Latency on the connections between the servers is <2ms, monitored
>> writes are ~3-4ms, reads are 50 to 2200 ms, normally ~80ms
>>
>> Is this normal? I know there are some optimisation java guys can do
>> with hector, but is there anything I can do on a systems level to
>> speed up reads.
>>
>> Thanks,
>>
>> Ben
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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