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From Heath Oderman <he...@526valley.com>
Subject Re: Cassandra on Windows network latency
Date Thu, 29 Apr 2010 11:17:23 GMT
I learned the hard way, that running py_stress in the src/contrib directory
is a great way to test what kind of speeds you are really getting.

What tools / client are you using to test to get the 200ms number?

stu

On Thu, Apr 29, 2010 at 7:12 AM, Viktor Jevdokimov <
Viktor.Jevdokimov@adform.com> wrote:

>  Hi all,
>
>
>
> We have installed Cassandra on Windows and found that with any number of
> Cassandra (single, or 3 node cluster) on Windows Vista or Windows Server
> 2008, 32 or 64 bit, with any load or number of requests we, have:
>
>
>
> When client and server are on the same machine, connect/read/write
> latencies ~0-1ms
>
> When client on another machine, same network, on the same switch,
> connection latency 0-1ms (as a ping), read/write latencies >=200ms.
>
>
>
> What causes 200ms latency accessing Cassandra on Windows through network?
> Does anybody experience such behavior?
>
>
>
> Cassandra 0.6.1
>
> Java SE 6 u20
>
>
>
>
>
> Best regards,
>
> Viktor
>
>
>

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