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Date:      Wed, 23 Jan 2002 20:22:17 -0600
From:      "Mario Doria" <mariodoria@yahoo.com>
To:        <questions@freebsd.org>
Cc:        <dwhite@resnet.uoregon.edu>
Subject:   Re[2]: Strange lock-ups during backup over nfs after adding 1024M RAM
Message-ID:  <001201c1a47d$faf08ae0$0a00a8c0@Deathstar>

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> On Wednesday, January 23, 2002 you wrote:
> DW> On Tue, 22 Jan 2002, Doug White wrote:
>
> DW> Try rebuilding your kernel with
> DW>
> DW> maxusers 256
> DW>
> DW> You may need to scale up the tables in the system to handle the
additional
> DW> memory.
>
> It's already set to 512, is it too high?  We did not rebuild the
> kernel after adding memory, it worked fine with maxusers 512 and
> 1024M RAM.

>Yes. You've scaled the tables so large that when you double the RAM, the
>page tables + maxusers 512 tables > KVM.


>Drop this to 128, definitely.  If you're doing a lot of network, monitor
>your mbuf usage and override that if necessary.

I had the same problem, but I removed the extra RAM from the machine.

What's better, to hardcode maxusers 128 in the kernel or let it be maxusers
0 and let the system auto-size the parameter?

Also, is this autosized on every boot or whenever a kernel is built?



Mario Doria
madd@tecdigital.net


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