Re: Hardware/OS recommendations for large databases ( - Mailing list pgsql-performance

From Joshua D. Drake
Subject Re: Hardware/OS recommendations for large databases (
Date
Msg-id 437CEA9B.6020401@commandprompt.com
Whole thread Raw
In response to Re: Hardware/OS recommendations for large databases (  (Alex Turner <armtuk@gmail.com>)
List pgsql-performance
>> So what happens is that under reasonable load we are actually waiting
>> for the CPU to process the code.
>>
>>
>
> This is the performance profile for PHP, not for Postgresql.  This is
> the post
And your point? PostgreSQL benefits directly from what I am speaking
about as well.

>> Performance of PHP, not postgresql.
>>
>>
Actually both.

> [snip]
>
> Running postgresql on a single drive RAID 1 with PHP on the same
> machine is not a typical installation.
>
Want to bet? What do you think the majority of people hosting at
rackshack, rackspace,
superrack etc... are doing? Or how about all those virtual hosts?

> 300ms for PHP in CPU time?  wow dude - that's quite a page.  PHP
> typical can handle up to 30-50 pages per second for a typical OLTP
> application on a single CPU box.  Something is really wrong with that
> system if it takes 300ms per page.
>
There is wait time associated with that because we are hitting it with
50-100 connections at a time.

Joshua D. Drake

> Alex.
>
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