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Re: [PATCH 2.6] Remove 3/4 threshold cut-off when the lower threshold is

To: Roberto Nibali <ratz@xxxxxxxxxxxx>
Subject: Re: [PATCH 2.6] Remove 3/4 threshold cut-off when the lower threshold is not set
Cc: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Horms <horms@xxxxxxxxxxxx>
Date: Fri, 30 Dec 2005 12:44:39 +0900
On Thu, Dec 29, 2005 at 05:13:21PM +0100, Roberto Nibali wrote:
> Hello,
> 
> The following two patches (kernel space and user space man page fixes) 
> address the 3/4 threshold cut-off when lower threshold is not set.
> 
> diff-tree fdb7185... (from bc22290...)
> Author: Roberto Nibali <ratz@xxxxxxxxxxxxxxxxxxxx>
> Date:   Thu Dec 29 17:00:04 2005 +0100
> 
>     [IPVS]: Remove 3/4 threshold cut-off when the lower threshold is 
> not set
> 
>     There is no reason to change the semantics of upper and lower threshold
>     handling when the lower threshold limit is not set (meaning 0). The 
> original
>     semantics to re-introduce a real server as soon as the lower 
> threshold limit
>     is hit with the connection counter should apply generally. This 
> patch revert
>     the original semantics to a more intuitive one.
> 
>     Signed-off-by: Roberto Nibali <ratz@xxxxxxxxxxxx>
> 
> Please consider applying,
> Roberto Nibali, ratz

Doesn't mean that if the lower threshold isn't set, then the
number of connections needs to drop to 0 before an overloaded
real server will be marked as un-overloaded.

While I think the simplicity of your approach makes a lot of sense.
I also think it makes a lot of sense for users to just specify
the upper threshold and have something sensible happen, which
to my mind is something like the current 3/4 rule.


-- 
Horms

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