Is there a way to tell from the OS whether the PCI-X bus is version 2 or not?
Tony Schreiner
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?
Tony Schreiner _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
If you run lspci it should display info about your pci bus.
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?
Tony Schreiner _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
If you run lspci it should display info about your pci bus.
I know about lscpi, but I don't know if it's telling what version
# lspci | grep PCI-X 80:10.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8132 PCI-X Bridge (rev 11) 80:10.1 PIC: Advanced Micro Devices [AMD] AMD-8132 PCI-X IOAPIC (rev 11) 80:11.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8132 PCI-X Bridge (rev 11) 80:11.1 PIC: Advanced Micro Devices [AMD] AMD-8132 PCI-X IOAPIC (rev 11)
this is on an Appro Xtreme
or on a Dell PowerEdge 2900 # lspci | grep PCI-X 04:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3) 06:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge (rev 01) 08:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
the Dell documentation says its 64-bit/133 MHz, which I think means it is PCI-X version 1.
Tony
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
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
On Tuesday 15 July 2008, Tony Schreiner wrote:
On Jul 15, 2008, at 5:45 AM, Peter Kjellstrom wrote:
...
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
I see, for FC I'd go with a 8x PCI-express HBA.
/Peter
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Bo Lynch -
Peter Kjellstrom -
Tony Schreiner