Date: Fri, 01 Dec 2006 11:53:44 +1100 From: David Nguyen <david@evxtech.com.au> To: Charles Sprickman <spork@bway.net> Cc: Philipp Ost <pj@smo.de>, freebsd-stable@freebsd.org, Mark Kirkwood <markir@paradise.net.nz> Subject: Re: vr speed issues Message-ID: <456F7D18.6070501@evxtech.com.au> In-Reply-To: <Pine.OSX.4.61.0611301856420.415@gee5.nat.fasttrackmonkey.com> References: <Pine.OSX.4.61.0611282212530.517@white.nat.fasttrackmonkey.com> <456DA282.6000801@smo.de> <20061129183028.L23451@sporker.bway.net> <456E6C55.3070609@paradise.net.nz> <456F5952.9020305@paradise.net.nz> <Pine.OSX.4.61.0611301856420.415@gee5.nat.fasttrackmonkey.com>
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Hi,
I'm not sure if I'm much help, I have the same chipset, VIA Rhine II on
a 6.1-p10 and works fine on a production server
# pciconf -lv
vr0@pci0:18:0: class=0x020000 card=0x1421147b chip=0x30651106 rev=0x78
hdr=0x00
vendor = 'VIA Technologies Inc'
device = 'VT6102 Rhine II PCI Fast Ethernet Controller'
class = network
subclass = ethernet
The ping -s 1500 other.host works with no packet loss.
You chip id looks the same, but the revision looks slightly newer.
Cheers
David
Charles Sprickman wrote:
> On Fri, 1 Dec 2006, Mark Kirkwood wrote:
>
>> Mark Kirkwood wrote:
>>> Charles Sprickman wrote:
>>>
>>>> I also did a little more digging and noticed that once I start
>>>> pinging from one of these hosts using large packet sizes, I get
>>>> about 50-60% packet loss (ie: ping -s 1500 other.vr0.host). If I
>>>> ping something with a decent card, I get about 30-50% packet loss.
>>>> There's no packet loss with the default packet size.
>>>>
>>>> Anyone else with some vr cards feel like checking this out?
>>>>
>>>
>>> I've got a VIA Rhine III card that I can dig out and put in if the
>>> data would be of any use/interest etc - FWIW I seem to recall being
>>> able to get reasonably close to wire speed when I was using it.
>>>
>>
>> I plugged in the card today, and seem to get pretty reasonable
>> performance (8-10MB/s for scp - see attached). The two boxes are
>> plugged into a Linksys router via store made cat5 or cat6 cables. The
>> second box has an Intel PRO 100 (fxp) adapter.
>
> Interesting. I've had the vr hosts going through three different
> switches, patch cables, the in-house cabling, and the issue remains
> the same. I'd love to just replace a cable and be done with it, but
> that doesn't seem to be the issue. I can also eliminate it by just
> switching out cards... so I don't really suspect I've got a whole
> load of bad cables.
>
>> Removing the vr card and going back to fxp everywhere seems to
>> provide better performance (e.g. get 9MB/s in the last test), but the
>> vr performance is acceptable (maybe your router clashes with your
>> card?).
>
> Mine borders on unusable. The packet loss really slows down and
> stalls TCP connections.
>
> I noticed you have a newer revision of the Via card:
>
> # pciconf -lv
> vr0@pci0:9:0: class=0x020000 card=0x14031186 chip=0x31061106 rev=0x86
> hdr=0x00
> vendor = 'VIA Technologies Inc'
> device = 'VT6105M/LOM Rhine III PCI Fast Ethernet Controller'
> class = network
> subclass = ethernet
>
> This is what I'm dealing with:
>
> hostb6@pci0:17:7: class=0x060000 card=0x287e1106 chip=0x287e1106
> rev=0x00 hdr=0x00
> vendor = 'VIA Technologies Inc'
> class = bridge
> subclass = HOST-PCI
> vr0@pci0:18:0: class=0x020000 card=0x80a71043 chip=0x30651106
> rev=0x7c hdr=0x00 vendor = 'VIA Technologies Inc'
> device = 'VT6102 Rhine II PCI Fast Ethernet Controller'
> class = network
> subclass = ethernet
>
> Maybe I'll just round up as much info as I can at my next visit, grab
> some tcpdumps of the loss from both ends and do a send-pr and hope for
> the best. I can get along with replacing the cards, but they seem to
> be really common these days - basically any cheap system with a Via
> chipset and onboard ethernet will be using some variation on this
> controller.
>
> Charles
>
>>
>> Cheers
>>
>> Mark
>>
>>
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