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From Jason Smith <...@iriscouch.com>
Subject Re: Why are reads from CouchDB so slow? (1.5MB/s or thereabouts)
Date Fri, 23 Mar 2012 12:45:46 GMT
Hi, Jonathan. What is the configuration value you have set for
"delayed_commits"?

Thanks.

On Fri, Mar 23, 2012 at 12:44 PM, Robert Newson <rnewson@apache.org> wrote:
> I can confirm that you won't get nginx's sendfile level of
> performance, if that helps at all. However, if we're to investigate a
> performance issue I want to be sure that an issue has been competently
> discovered. The minimum for me would be seeing results from a trusted
> benchmarking tool.
>
> B.
>
> On 23 March 2012 12:41, Jonathan Williamson <jon@netcopy.co.uk> wrote:
>> I'm aware of that - but it still doesn't explain the disparity. I was
>> using curl for the Nginx tests too...
>>
>> Is the reason you're asking the question because you believe the
>> performance should be much better than I'm seeing?
>>
>> On Fri, Mar 23, 2012 at 12:39 PM, Robert Newson <rnewson@apache.org> wrote:
>>> curl is not a benchmarking tool. Each curl command is opening a new
>>> tcp connection, etc. Can you try with httperf, apachebench, tsung,
>>> nodeload?
>>>
>>> B.
>>>
>>> On 23 March 2012 12:36, Jonathan Williamson <jon@netcopy.co.uk> wrote:
>>>> It was just a script that looped over the keys for 1000 documents,
>>>> fetching them one after another (using curl).
>>>>
>>>> On Fri, Mar 23, 2012 at 12:31 PM, Robert Newson <rnewson@apache.org>
wrote:
>>>>> Using which http benchmarking tool (and exactly which settings)?
>>>>>
>>>>> On 23 March 2012 12:30, Jonathan Williamson <jon@netcopy.co.uk>
wrote:
>>>>>> My initial CouchDB test was over 1000 GETs (all to roughly similar
>>>>>> documents), taking an average of the total time vs the total amount
of
>>>>>> data recieved.
>>>>>>
>>>>>> On Fri, Mar 23, 2012 at 12:26 PM, Robert Newson <rnewson@apache.org>
wrote:
>>>>>>> Are you really extrapolating mb/s from a single curl command?
>>
>>
>>
>> --
>> Jon
>>
>> Jonathan Williamson
>> Systems Architect
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-- 
Iris Couch

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