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Date:      Tue, 20 Aug 2002 12:54:44 -0700 (PDT)
From:      Julian Elischer <julian@elischer.org>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        Bosko Milekic <bmilekic@unixdaemons.com>, Luigi Rizzo <rizzo@icir.org>, freebsd-net@FreeBSD.ORG
Subject:   Re: m_getcl and end-to-end performance
Message-ID:  <Pine.BSF.4.21.0208201254060.52191-100000@InterJet.elischer.org>
In-Reply-To: <15714.40341.115512.786712@grasshopper.cs.duke.edu>

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On Tue, 20 Aug 2002, Andrew Gallatin wrote:

> 
> Bosko Milekic writes:
>  > 
>  > On Tue, Aug 20, 2002 at 03:36:38PM -0400, Andrew Gallatin wrote:
>  > > 
>  > > Luigi Rizzo writes:
>  > >  > 
>  > >  > now if you have patches i'll be happy to have a look at them.
>  > > 
>  > > Here's what I'm running with now.  It removes the M_PKTHDR
>  > > requirement, allowing me to use multiple m_getcl()'s to stock jumbo
>  > > frames. 
>  > 
>  >   I forgot about something in Luigi's original patch:
>  > 
>  >   Does this stuff make sure to only stock the pool with mbufs+clusters
>  >   and not mbufs+any_other_external_buffer?  This requirement seems to be
> 
> Yes, it checks that M_EXT_WRITABLE(m) is true before adding it to the pool.

Are only Cluster mbufs writable?

> 
> Drew
> 
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