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Re: Minimising Availability Errors (Apache-4D)

by Peter Jakobsson-2 :: Rate this Message:

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Hi Peter

Thanks for the reply - that sounds an interesting option which I'll  
suggest to them, however, I can't actually get 4D to 'stock up' pre-
emptively on web process (as far as I'm aware). It creates them in  
response to the request loading - is this correct ? (I can only set  
the 'maximum' number of web processes).

How would you go about doing this ?

Also, by 'keep them running' I assume your refering to the 'Reuse  
Temporary Contexts' option under the web preferences in 4D Client.  
I've never really been sure sure how to optimally co-ordinate the  
following preferences:

  - Web/options"Reuse Temporary Contexts" (4D Client - we always have  
on because web server runs much smoother)
  - Web/Advanced/Web Processes..."Inactive Web Process Timeout" and  
"Max Concurrent Web Processes"
  - Web/options/Keep Alive Connections.....Number of Requests by  
Connection" and "Connection Timeout"

For example - what's the difference between having "Reuse Temporary  
Contexts" on and  setting "Inactive Web Process Timeout" to  
"Unlimited" ?

Peter


On 13 May 2009, at 11:39, Peter Schumacher wrote:

> wouldn't it help to create more web processes "on stock" and keep  
> them running? Just create 2000 processes and let them run. In the  
> idle state they don't consume anything.

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