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Date:      Thu, 19 Sep 2013 13:16:34 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        hiren panchasara <hiren.panchasara@gmail.com>
Cc:        "freebsd-embedded@freebsd.org" <freebsd-embedded@freebsd.org>
Subject:   Re: Dlink DIR-825 B1 trial
Message-ID:  <B1EB18C5-7DFA-44D1-A764-15F96F1BADF5@bsdimp.com>
In-Reply-To: <CALCpEUGdEXaDctUR2akSjpU%2B=JhYvHUqwoyYTj2FyrEVMZGAbg@mail.gmail.com>
References:  <b9e5a389e69c587c54ac71e70ae47cfd.squirrel@arroway.org> <1378316083.1706.0.camel@localhost> <9165aa958e7dc206da3515146181c14b.squirrel@arroway.org> <1378325846.1706.2.camel@localhost> <CAJ-VmoncDAKpTQcDJa6GvV4we%2BJmZnSQgE4Kwkk1egvvutCyqQ@mail.gmail.com> <CALCpEUEWWY9ycCYE9%2BFv4EBaUTBf-0oLVnGfcPfCkH3JYKKiXw@mail.gmail.com> <CAJ-VmokphPLP44Kz-7FHaEKwhYuuf0SR=dizK404pvFutFk4Ew@mail.gmail.com> <CALCpEUHtuRPFwOVUX_BEVA=0u6UPx5rpZcM95qEsSVRDWmjffQ@mail.gmail.com> <CAJ-VmomfO01-cu1QMxnm_r=_ZBdoPBin%2BaASOw-WM5vbUTXiPQ@mail.gmail.com> <CALCpEUGdEXaDctUR2akSjpU%2B=JhYvHUqwoyYTj2FyrEVMZGAbg@mail.gmail.com>

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On Sep 19, 2013, at 12:20 PM, hiren panchasara wrote:

> On Thu, Sep 19, 2013 at 10:49 AM, Adrian Chadd <adrian@freebsd.org> wrote:
> 
>> Well, I wonder whether this is the right fix, or the auto-tuning stuff
>> needs to be rethought for RAM levels below their minimum testing (I think
>> it was 128mb.)
>> 
> VM_KMEM_SIZE_SCALE=1 is already there for amd64.  Where apparently auto
> tuning works.
> 
> I do not see why it has to be 3 for the rest of the platforms.
> 
> Has anyone checked if autotuning works on other platforms? I do not think
> so.

I'm unsure why it is 3 on all the other platforms.  I'd imagine that at least mips and arm could be change. Especially the newer/bigger ones (armv6 and mips64).  the autotune code wasn't tested against smaller systems and there's been much pain because of it...

Warner

>> 
>> -adrian
>> 
>> 
>> On 19 September 2013 10:37, hiren panchasara <hiren.panchasara@gmail.com>wrote:
>> 
>>> I've sent a proposed fix on this list yesterday but Just thought of
>>> following up here regarding
>>> "[zone: mbuf_cluster] kern.ipc.nmbclusters limit reached"
>>> 
>>> 
>>> matheus, I bet you have pretty low maxmbufmem. To bump it up, add
>>> following line in your kernconf file:
>>> options                VM_KMEM_SIZE_SCALE=1
>>> 
>>> Let me know if that helps.
>>> 
>>> Cheers,
>>> Hiren
>>> 
>>> 
>>> 
>> 
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