[CentOS] pci-x v2 detect on command line

Tony Schreiner schreian at bc.edu
Tue Jul 15 15:13:01 UTC 2008

On Jul 15, 2008, at 5:45 AM, Peter Kjellstrom wrote:

> On Monday 14 July 2008, Tony Schreiner wrote:
>> On Jul 14, 2008, at 12:28 PM, Bo Lynch wrote:
>>> On Mon, July 14, 2008 11:43 am, Tony Schreiner wrote:
>>>> Is there a way to tell from the OS whether the PCI-X bus is  
>>>> version 2
>>>> or not?
> You basically have two ways to go. 1) Google the PCI bridge 2) run  
> lspci with
> a few -v options and attempt to decode the output.
> The first approach would have told you that the AMD bridge does  
> indeed support
> PCI-X version 2 but only to 266 MHz (assuming the board/bios etc.  
> supports
> it). The cheap intel chip you mentioned below wont even likely run  
> 133 MHz
> version 1 very fast...
> But at this point it's probably relevant to ask why do you care? I  
> have seen
> many high performance PCI, PCI-X and PCI-express cards but PCI- 
> X-2? ...that
> hasn't seen any wide use at all. Do you really have a card that is  
> PCI-X-2?
> As I understand it it's quite dead in the water and everyone has  
> moved on to
> PCI-express.
> /Peter

Thanks for the pointers. The reason I asked the question is I'm  
investigating some Fibre Channel HBA's and was asked if I had if I  
had PCI-X v2 available. I agree that I have not seen it mentioned in  
the press or anywhere else very much.

Tony Schreiner

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