[wp-hackers] WordPress memory needed

Diana K. C dianakac at gmail.com
Tue Jul 24 23:22:13 UTC 2012

Great comment Layman, thank you.

I find useful to keep your comment as a reference for poor services 
configurations around here.

----- Original Message ----- 
From: "Brian Layman" <wp-hackers at thecodecave.com>
To: <wp-hackers at lists.automattic.com>
Sent: Tuesday, July 24, 2012 5:12 PM
Subject: Re: [wp-hackers] WordPress memory needed

> On 7/23/2012 7:51 PM, Almog Baku wrote:
>> If you ask me.. 256 is very very low.. so don't be miser about your
>> memory.. it for your own good!
> I tried to resist adding another reply to this thread, but I can't.
> We need to remember that not every server implementation is done the same. 
> In many implementations there will be multiple instances of PHP executed 
> and loaded in memory.  That must be a consideration.  If you have 30 
> instances of PHP running at once, and all of them tried to use 256MB  of 
> ram, you suddenly find yourself using 8gb of ram just for php process - 
> and that doesn't consider apache, mysql and OS memory.  So yeah, 256MB 
> doesn't sound like much, but being miserly over memory usage is critical. 
> The one server I work regularly works its way up to 5500 simultaneous 
> connections.  If it used an Apache setup where 1/5 of those connections 
> might require a separate php instance and each instance needed even 64MB, 
> the server would need over 70GB of ram available to keep up.  Fortunately 
> the max memory limit is simply that -  a limit.  It is not a requested 
> amount.  And also nginx configs are awesome and handle this level of 
> traffic in full stride.
> But you can see why it is important to keep memory usage in mind when you 
> write plugins and develop core. Desktop development has one person using 
> one computer, memory isn't as much of an issue. In  a distributed 
> situation, when thousands of clients can connect at once, it's a different 
> world.
> Brian Layman
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