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Date: Fri, 14 Aug 2009 12:56:42 -0400
Message-ID: <e2111bbb0908140956x67cf24fel24b134e17203976a@mail.gmail.com>
Subject: Re: Performance drop after upgrading erlang
From: Paul Davis <paul.joseph.davis@gmail.com>
To: user@couchdb.apache.org
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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
>>>
>>
>