Date: Thu, 20 Sep 2007 11:05:30 +0200 From: Borja Marcos <BORJAMAR@SARENET.ES> To: Kris Kennaway <kris@FreeBSD.org> Cc: freebsd-current@freebsd.org, Ivan Voras <ivoras@freebsd.org> Subject: Re: Memory allocation problems (ZFS/NFS/amd64) Message-ID: <A9B46B5C-F44F-4A1B-8989-E0E7CAA70BFA@SARENET.ES> In-Reply-To: <46F23166.8070908@FreeBSD.org> References: <5870F83F-7174-47AA-98AE-C1DE8972E0C8@SARENET.ES> <fcrmmp$2ug$1@sea.gmane.org> <613318C3-6B66-4758-A0D4-97405D6A1914@SARENET.ES> <46F23166.8070908@FreeBSD.org>
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On 20 Sep 2007, at 10:37, Kris Kennaway wrote:
> Borja Marcos wrote:
>> On 19 Sep 2007, at 19:35, Ivan Voras wrote:
>>> Borja Marcos wrote:
>>>
>>>> These are not innocuous messages, the machine is rejecting
>>>> connections
>>>> like crazy. Any ideas?
>>>> The number of established TCP connections was around 490, and the
>>>> machine has 2 GB of RAM.
>>>
>>> Just a guess: what is your vm.kmem_size_max and have you tried
>>> increasing it?
>> It's the first thing I thought, and I cranked it to a very high
>> value just in case:
>> vm.kmem_size_max: 1073741824
>
> You actually wanted to tune vm.kmem_size too or it may not actually
> change the value used (_max is just a ceiling for autotuning).
> However if this is i386 you can't set it that high without also
> adjusting KVA_PAGES too (which has other effects).
It's an amd64. I understand that i386 is mostly out of the question
if I want to play reasonably safe with ZFS :)
Oh, ok. I will try with both, then. Should I try the same value?
Perhaps it's a bit high, but I understand that with a 64 bit address
space I can set it sort of arbitrarily high without many side effects.
Thank you very much,
Borja.
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