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 From:  =?iso-8859-1?Q?Anders_Nordstr=F6m?= <and at telia dot com>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  link0 flag, was: Performance Question, P-90 vs. Soekris Net4501
 Date:  Thu, 24 Feb 2005 00:19:31 +0100
That would be me with the reduced CPU load on a PII 233, and the numbers 
cited by Chris are about right.

Jesse, could you explain exactly how to enable "link0"? I can't find it 
explained in the archives.


/Anders


----- Original Message ----- 
From: "Jesse Guardiani" <jesse at wingnet dot net>
To: <m0n0wall at lists dot m0n0 dot ch>
Sent: Wednesday, February 23, 2005 8:36 PM
Subject: [m0n0wall] Re: Re: Performance Question, P-90 vs. Soekris Net4501


> Chris Buechler wrote:
>
>> On Wed, 23 Feb 2005 13:46:37 -0500, James W. McKeand <james at mckeand dot biz>
>> wrote:
>>>
>>> The NSC SC1100 would be the processor in the net4801 (actually
>>> 266MHz). The net4501 has a 133MHz AMD ElanSC520, thus the 486 class.
>>>
>>> So, between running at 133MHz (vs. 90MHz) and the SDRAM (vs. EDO or
>>> whatever) I believe we have the reasons behind the performance
>>> difference between a net4501 and a P90 system.
>>>
>>> Could the NICs in the P90 also cause problems? How about that ISA
>>> NIC...
>>>
>>
>> I agree.  I'd look at what NIC's are being used, and get rid of
>> anything ISA.  All PCI Intels or 3Coms should make it a closer
>> matchup.
>>
>> There was recently somebody on the list that I suggested switch to
>> Intels, and he posted back later saying it fixed the issue he was
>> having, and also dropped CPU utilization from ~35% to ~7% on a PII
>> 233.  (I don't remember the exact details, but NIC's can make that big
>> of a difference)
>
> And if you do a lot of traffic, *and* have an fxp NIC, it's worth
> hacking your config.xml to add the "link0" flag to your ifconfig.
> link0 provides IRQ mitigation, thus freeing the CPU a bit.
>
> -- 
> Jesse Guardiani, Systems Administrator
> WingNET Internet Services,
> P.O. Box 2605 // Cleveland, TN 37320-2605
> 423-559-LINK (v)  423-559-5145 (f)
> http://www.wingnet.net
>
>
>
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