From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
---|---|
To: | Bruce Momjian <bruce(at)momjian(dot)us> |
Cc: | Gregory Stark <stark(at)enterprisedb(dot)com>, "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>, josh(at)agliodbs(dot)com, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: COMMIT NOWAIT Performance Option |
Date: | 2007-02-28 01:57:16 |
Message-ID: | 45E4E17C.7070701@commandprompt.com |
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Thread: | |
Lists: | pgsql-hackers |
Bruce Momjian wrote:
> Joshua D. Drake wrote:
>> Gregory Stark wrote:
>>> "Joshua D. Drake" <jd(at)commandprompt(dot)com> writes:
>>>
>>>>>> On 2/27/07, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>>>>>>> I see no reason to implement it if there is no performance gain.
>>>> However, I strongly concur that we need at least some evidence. It could
>>>> easily be that a misstep in the code, causes a loop over the wrong set
>>>> and all the performance we thought we would get is invalid, not because
>>>> of theory or what should happen, but because of actual implementation.
>>> It rather sounds like you're asking for a proof that Simon can write bug-free
>>> code before you allow him to write any code.
>> Well wouldn't that be great! :) but no, not quite. I would just like to
>> see some metrics showing that it is a benefit. Besides the patch needs
>> to work for the metrics to be run.
>
> I don't understand the great demand for metrics at this point. Once the
> patch is ready, people can run the patch on their workloads to get
> real-world metrics. Metrics are only needed before the patch is
> applied, not before it is discussed.
I don't disagree. Maybe I missed something here, but my whole argument
for metrics was purely for the feature to be accepted. I would certainly
expect full discussion.
Joshua D. Drake
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