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Date:      Fri, 18 Apr 2008 03:48:56 -0700
From:      Xin LI <delphij@delphij.net>
To:        gnn@freebsd.org
Cc:        net@freebsd.org
Subject:   Re: zonelimit issues...
Message-ID:  <48087C98.8060600@delphij.net>
In-Reply-To: <m2hcdztsx2.wl%gnn@neville-neil.com>
References:  <m2hcdztsx2.wl%gnn@neville-neil.com>

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Hi,

gnn@freebsd.org wrote:
> Hi,
> 
> I am wondering why this patch was never committed?  
> 
>  http://people.freebsd.org/~delphij/misc/patch-zonelimit-workaround

As its name said, it's a workaround :)

I thought the bug was fixed by several ways, so the old bug resurfaced?

> It does seem to address an issue I'm seeing where processes get into
> the zonelimit state through the use of mbufs (a high speed UDP packet
> receiver) but even after network pressure is reduced/removed the
> process never gets out of that state again.  Applying the patch fixed
> the issue, but I'd like to have some discussion as to the general
> merits of the approach.
> 
> Unfortunately the test that currently causes this is tied very tightly
> to code at work that I can't share, but I will hopefully be improving
> mctest to try to exhibit this behavior.
> 
> Best,
> George
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-- 
Xin LI <delphij@delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!



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