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From Greg Marr <gr...@alum.wpi.edu>
Subject Re: Can't make sense out of process configuration directives
Date Fri, 03 Mar 2000 00:06:08 GMT
At 06:47 PM 03/02/2000 , Scott Hess wrote:
>There is a difference between being willing to fill 50 requests at 
>any given time (StartServers) and being willing to fill 50 
>_additional_ requests at any given time (MinSpareServers).
>
>Assume a load-balanced cluster of some sort (otherwise, it doesn't 
>make a
>difference).  Assume that in the middle of the day, any given node 
>in the
>cluster can be expected to be servicing 50 requests, plus or minus 5 
>(so
>45-55 requests).
>
>In this case, MinSpareServers should be set to about 10, because at 
>any
>given instant, you might expect to see about 10 more requests come in
>without warning.  But, if you want to be able to restart a node at 
>this
>time, you'll want StartServers of about 50, because you know that as 
>soon
>as you start the node, it will immediately have 50 requests 
>available to
>service.  I don't necessarily want to set MinSpareServers to 50 in 
>this
>case, because I don't really need 50 spare servers at any time except
>peak-time restarts.

So, set MinServers to 50 and MinSpareServers to 10.

--
Greg Marr
gregm@alum.wpi.edu
"We thought you were dead."
"I was, but I'm better now." - Sheridan, "The Summoning"


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