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Date: Fri, 14 Aug 2009 17:59:39 +0100
Message-ID: <13ae4dd50908140959y1ad94549j238113a3c6d56ae@mail.gmail.com>
Subject: Re: Performance drop after upgrading erlang
From: Paul Carey <paul.p.carey@gmail.com>
To: user@couchdb.apache.org
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If 30s for the 0.10 test suite is about right, and R12B-3 didn't fsync
properly, it sounds like I have my answer.

Thanks Paul, Adam.

On Fri, Aug 14, 2009 at 5:56 PM, Paul Davis<paul.joseph.davis@gmail.com> wrote:
> On Fri, Aug 14, 2009 at 12:23 PM, Paul Carey<paul.p.carey@gmail.com> wrote:
>> Paul
>>
>> I'm not sure I did, so I deleted the install completely, re-installed
>> and am running via ./utils/run so I'm pretty sure there's no detritus
>> hanging around.
>>
>> After re-running the test suite 3 times the avg run time on 0.9.1 was
>> 47s and and on 0.10 (804278) was 31s.
>>
>
> 30s for the 0.10 futon tests sounds about right to me. There are more
> tests, though I haven't seen any other numbers on the time for running
> the test suite.
>
> Hopefully we can start working some basic timing into the build bot
> instance that infra is going to build for us. While not an immediate
> answer, hopefully it'll help us keep an eye on such things.
>
>> On Fri, Aug 14, 2009 at 4:50 PM, Paul Davis<paul.joseph.davis@gmail.com> wrote:
>>> Paul,
>>>
>>> That's most odd. This is the first i've heard of a performance drop
>>> after upgrading Erlang. When you re-built CouchDB did you make sure
>>> that there weren't old beam files in the build directory?
>>>
>>> Paul
>>>
>>> On Fri, Aug 14, 2009 at 11:44 AM, Paul Carey<paul.p.carey@gmail.com> wrote:
>>>> Hi
>>>>
>>>> I've been behind the curve in my otp version, running R12B (5.6.3)
>>>> until just now.
>>>>
>>>> Using R12B, the 0.9.1 test suite ran to completion in about 12s.
>>>>
>>>> I've just upgraded to R13B01 (5.7.2) and now the 0.9.1 test suite
>>>> takes about 50s - 60s to complete. This is a big difference. Is it
>>>> expected or have I got problems?
>>>>
>>>> I'm running OS X 10.5.8 and simply ran ./configure without any flags
>>>> when building both Erlang and CouchDB. I re-ran ./configure and make
>>>> for CouchDB after upgrading Erlang.
>>>>
>>>> Many thanks
>>>>
>>>> Paul
>>>>
>>>
>>
>