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From Jahangir Mohammed <md.jahangi...@gmail.com>
Subject Re: read performance problem
Date Sun, 20 Nov 2011 21:22:49 GMT
There is something wrong with the system. Your benchmarks are way off. How
are you benchmarking? Are you using the stress lib included?
On Nov 19, 2011 8:58 PM, "Kent Tong" <freemant2000@yahoo.com> wrote:

> Hi,
>
> On my computer with 2G RAM and a core 2 duo CPU E4600 @ 2.40GHz, I am
> testing the
> performance of Cassandra. The write performance is good: It can write a
> million records
> in 10 minutes. However, the query performance is poor and it takes 10
> minutes to read
> 10K records with sequential keys from 0 to 9999 (about 100 QPS). This is
> far away from
> the 3,xxx QPS found on the net.
>
> Cassandra decided to use 1G as the Java heap size which seems to be fine
> as at the end
> of the benchmark the swap was barely used (only 1M used).
>
> I understand that my computer may be not as powerful as those used in the
> other benchmarks,
> but it shouldn't be that far off (1:30), right?
>
> Any suggestion? Thanks in advance!
>
>

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