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From Dmitry Unkovsky <oil.cray...@gmail.com>
Subject Re: couchdb response times
Date Tue, 18 Aug 2009 21:44:17 GMT
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To me seems very like a storage issue.
What gives
$iostat -xk -d /dev/sda 1 1000
under some load?
Replace /dev/sda with your device (without number), and particularly
svctm is of interest.

- --
DU

2009/8/18 Paul Davis :
> Maybe check that its not just AWS being generally slow? Other than
> that I can't think of anything at the moment.
>
> On Tue, Aug 18, 2009 at 4:41 PM, Adam Wolff wrote:
>> No, I don't think this is a change, but this is the first time I've really
>> measured.
>>
>> Hm, maybe it wasn't apt that installed erlang:
>> ubuntu@ip-10-251-206-159:~$ erl -version
>> Erlang (SMP,ASYNC_THREADS) (BEAM) emulator version 5.6.3
>>
>> Couch version is 0.9.0
>>
>> Anywhere else to look?
>> A
>>
>> On Tue, Aug 18, 2009 at 1:31 PM, Paul Davis wrote:
>>
>>> Adam,
>>>
>>> What version of Erlang did apt give you? And what version of CouchDB?
>>>
>>> If I remember right intrepid might be giving you Erlang 5.5.5 (check
>>> with erl -version) and if so, that's very very bad.
>>>
>>> Also, is this a recent change in response times? For singe docs this
>>> seems quite slow regardless of all that. Not sure on EC2 vs anything
>>> else though.
>>>
>>> Paul Davis
>>>
>>> On Tue, Aug 18, 2009 at 3:10 PM, Adam Wolff wrote:
>>> > Hi all,We're moving our app towards production, and we're seeing fairly
>>> slow
>>> > response times from couchdb. Every request to the db appears to take
>>> about
>>> > 100ms, even for just a plain document. Is this expected? Any hints for
>>> > better configuration? We're just running what you get after you do make
>>> &&
>>> > make install on an amazon ec2 big instance, having apt-got erl. We're
>>> > running ubuntu intrepid.
>>> >
>>> > Thanks,
>>> > A
>>> >
>>>
>>
>





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