Date: Sat, 08 May 2010 12:41:24 -0400 From: joe <joe@hostedcontent.com> To: Ian FREISLICH <ianf@clue.co.za> Cc: freebsd-current@freebsd.org, Fabien Thomas <fabien.thomas@netasq.com> Subject: Re: igb broken? Unexplained weirdness with intel 82576 nics on a supermicro board. Message-ID: <4BE59434.9070308@hostedcontent.com> In-Reply-To: <E1OAlmh-0002Dj-Mm@clue.co.za> References: <4BE565E5.9030505@hostedcontent.com> <4BE5303B.8050409@hostedcontent.com> <4BE529FF.5000008@hostedcontent.com> <C15B47BC-AF5F-4AF4-899C-98155EC5A4D4@netasq.com> <E1OAhhO-00021o-DH@clue.co.za> <E1OAlmh-0002Dj-Mm@clue.co.za>
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On 05/08/2010 11:17 AM, Ian FREISLICH wrote: > joe wrote: >> On 05/08/2010 06:55 AM, Ian FREISLICH wrote: >>> joe wrote: >>>> I have just tried your suggeston and it has no effect for me ;( >>> >>> Do you have another brand of NIC that you can try? At least that >>> will isolate whether it's igb(4) or something else. >> >> I will grab a new nic today and try...my options are limited though. >> Here are the nics i can get my hands on >> >> TP-LINK TL-TG3468, 10/100/1000Mbps PCIe Adapter (supported by fbsd?) > > Based on the RTL8168B chip. Should be supported by the re(4) driver. > >> Intel (EXPI9301CT) Gigabit CT Desktop Adapter (yet another intel nic) > > i82574L chip. Should be supported by the em(4) driver. I have had > good performance in the past with this driver and less than > satisfactory performance with the igb(4) driver. > > That may not be your problem though. Before you go out and buy, > have a look at the amount of interrupt time your slow machine spends > in 'top' or 'systat -vm'. systat will also show the interrupt rate > for each driver, perhaps it's not doing interrupt moderation properly. > This will manifest as more than about a 1000 per second. There are > loader tunables for the driver to increase the number of transfer > descriptors and to tune interrupt moderation. > > You could try running trafshow (port) on the interface while > performing the transfer. Perhaps promiscuous mode will turn off > some hardware feature that will improve things. It may however > break hardware vlanning as it does on my 82575GB 4 port igb card. > > Ian > > -- > Ian Freislich I bought those two cards anyways, im in a rush to figure out this problem. That being said i am still encountering the exact same problem regardless on which network card i am running. I am at a complete loss. I am about to try a raid card to see if the problem might lay within the onboard sata ports. I did pull the server and brought it home so that i can test more things quicker. I am going to try using a raid card instead of the onboard sata ports and see if i still encounter the same problem. I would love any suggestions you may have on where to go from here to figure out where the problem might be. joehome | help
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