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From Maki Watanabe <watanabe.m...@gmail.com>
Subject Re: stress.py bug?
Date Tue, 22 Mar 2011 08:48:06 GMT
A client thread need to wait for response, during the server can
handle multiple requests simultaneously.

2011/3/22 Sheng Chen <chensheng2010@gmail.com>:
> I am just wondering, why the stress test tools (python, java) need more
> threads ?
> Is the bottleneck of a single thread in the client, or in the server?
> Thanks.
> Sean
>
> 2011/3/22 Ryan King <ryan@twitter.com>
>>
>> On Mon, Mar 21, 2011 at 4:02 AM, pob <peterob333@gmail.com> wrote:
>> > Hi,
>> > I'm inserting data from client node with stress.py to cluster of 6
>> > nodes.
>> > They are all on 1Gbps network, max real throughput of network is 930Mbps
>> > (after measurement).
>> > python stress.py -c 1 -S 170000  -d{6nodes}  -l3 -e QUORUM
>> >  --operation=insert -i 1 -n 500000 -t100
>> > The problem is stress.py show up it does avg ~750ops/sec what is
>> > 127MB/s,
>> > but the real throughput of network is ~116MB/s.
>>
>> You may need more concurrency in order to saturate your network.
>>
>> -ryan
>
>



-- 
w3m

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