From: Chris <dmagick@gmail.com>
To: Marcos <mjs_ops@gmx.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Creating a correct and real benchmark
Date: Tue, 21 Feb 2006 11:21:52 +1100
Message-ID: <43FA5D20.2080805@gmail.com> (raw)
In-Reply-To: <op.s5aqydincigqcu@apollo13>
References: <1140432636.1170.6.camel@servidor>
<op.s5aqydincigqcu@apollo13>
PFC wrote:
>
>> I'm developing a search engine using the postgresql's databas. I've
>> already doing some tunnings looking increase the perform.
>>
>> Now, I'd like of do a realistic test of perfom with number X of queries
>> for know the performance with many queries.
>>
>> What the corret way to do this?
>
>
>
> I guess the only way to know how it will perform with your own
> application is to benchmark it with queries coming from your own
> application. You can create a test suite with a number of typical
> queries and use your favourite scripting language to spawn a number of
> threads and hammer the database. I find it interesting to measure the
> responsiveness of the server while torturing it, simply by measuring
> the time it takes to respond to a simple query and graphing it. Also
> you should not have N threads issue the exact same queries, because
> then you will hit a too small dataset. Introduce some randomness in the
> testing, for instance. Benchmarking from another machine makes sure the
> test client's CPU usage is not a part of the problem.
The other advice on top of this is don't just import a small amount of data.
If your application is going to end up with 200,000 rows - then test
with 200,000 rows or more so you know exactly how it will handle under
"production" conditions.
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To: pgsql-performance@postgresql.org
Cc: dmagick@gmail.com, mjs_ops@gmx.net
Subject: Re: Creating a correct and real benchmark
In-Reply-To: <43FA5D20.2080805@gmail.com>
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