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Re: [Lse-tech] Re: A common layer for Accounting packages

To: hadi@xxxxxxxxxx
Subject: Re: [Lse-tech] Re: A common layer for Accounting packages
From: Paul Jackson <pj@xxxxxxx>
Date: Tue, 1 Mar 2005 12:40:41 -0800
Cc: akpm@xxxxxxxx, guillaume.thouvenin@xxxxxxxx, kaigai@xxxxxxxxxxxxx, marcelo.tosatti@xxxxxxxxxxxx, davem@xxxxxxxxxx, jlan@xxxxxxx, lse-tech@xxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, elsa-devel@xxxxxxxxxxxxxxxxxxxxx
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Organization: SGI
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Jamal wrote:
> What was wrong with just going ahead and just always
> invoking your netlink_send()? 

I think the hope was to reduce the cost of the accounting hook in fork
to "next-to-zero" if accounting is not being used on that system.

See Andrew's query earlier:
> b) they are next-to-zero cost if something is listening on the netlink
>    socket but no accounting daemon is running.

Presumably sending an ignored packet costs something, quite possibly
more than "next-to-zero".

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@xxxxxxx> 1.650.933.1373, 1.925.600.0401

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