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Date:      Mon, 01 Jan 1996 18:02:56 -0800
From:      David Greenman <davidg@Root.COM>
To:        Heikki Suonsivu <hsu@clinet.fi>
Cc:        freebsd-bugs@freefall.freebsd.org
Subject:   Re: kern/896: Current quite dead 16th dec sup 
Message-ID:  <199601020202.SAA00219@corbin.Root.COM>
In-Reply-To: Your message of "Tue, 02 Jan 96 03:18:43 %2B0200." <199601020118.DAA16430@katiska.clinet.fi> 

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>        real memory = 16777216 (16384..)
>        kmem_suballoc: bad status returned 3.
>        panic: kmem_suballoc
>
>        after this normal rebooting in 15 seconds message.
>
>
>This seems to have been caused by setting
>
>options "NMBCLUSTERS=8192"
>
>I don't know why it did not happen before.  8192 did work with mid
>november kernels.

   This can only happen if, because of the various options in your kernel,
consumed the entire 256MB of virtual address space. That would be quite
incredible if true. It appears that you must have a tremendous amount of
junk in your kernel and have a variety of kernel config parameters highly
mistuned.
   In any case, your machine CAN NOT WORK correctly with NMBCLUSTERS=8192. A
setting of 8192 can consume up to 16MB of memory just for the network buffers.
Since that's all the memory your machine has, well, I think you see the
problem.

-DG



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