PCI Express (Peripheral Component Interconnect Express)

learn more… | top users | synonyms (1)

0
votes
1answer
42 views

Set a upper bandwidth limit for Infiniband HCAs

I have to deal with PCIe congestion and I need to find a way to reduce PCIe traffic. I get several IB cards in one node (among other PCIe devices). HCAs are FDR Infiniband. Putting those HCAs in FDR-...
0
votes
1answer
48 views

TP-Link TG-3468 on an IBM x3850 M2

I got a networks card from TP-Link. It is the TG-3468. I wanna place it into my IBM server x3850 M2. It has PCIe x8 slots. The slot is a little bit longer than the lenght of the card, but it fits. ...
2
votes
0answers
117 views

Map PCIe slot number (or BDF) to device number or vice versa

Is there any way to know the drive number from BDF or slot number of a PCIe or vice versa? Suppose I have four PCIe drives attached to my system. And I know their BDF's, I want to know each of the ...
2
votes
0answers
451 views

NVMe driver for Illumos: can it be considered usable?

Can the NVM Express (NVMe) driver driver-storage-nvme for Illumos be considered usable? It would be nice to use e.g. an Intel DC P3700 PCIe drive for L2ARC as the SAS2 and 3 SSD drives are awfully ...
1
vote
0answers
284 views

PCIe card memory regions ignored on linux kernel 3.13

On my system, with kernel 3.13.0-32-generic (Ubuntu Server 14.04.1 LTS) installed, one of the PCIe boards in the system (06:00.0) is having it's memory regions ignored: Interrupt: pin A routed to IRQ ...
1
vote
0answers
189 views

PCI-E riser card prevents server from starting at all

I need to replace the RAID controller in a server, and the new one is PCI Express while the old one was 64bit PCI. The server has both slots, but the riser card that was installed does not contain the ...
0
votes
0answers
15 views

Why would Centos host access the nvme device that in sleep mode

I use a standard NUC PC with CentOS 6.6 installed to be the host; and what I set on the host side is enabling the Link Control Register L1 state. On the device, as soon as it de-assert the CLKREQ#, I ...
0
votes
0answers
145 views

Can I Intentionally Disable PCIe Lanes? Or lower PCIe Width?

I am doing some testing on my server and want to lower the width to my PCIe device (or its PCIe bridge). In case it is relevant, I figured out how to lower my speed based on the PCI Spec with Linux'...
0
votes
0answers
26 views

PCIexpress switch mixed gen2/gen3 behavior

For a PCIexpress switch with a physical gen3 x4 upstream, and two downstream devices each with x4, what is the expected speed/performance behavior when Downstream device 1 is gen2 x4 and downstream ...
0
votes
0answers
48 views

Turn off output/force DPMS on unloaded GPU without driver

I'm running a KVM VGA Passthrough VM on my desktop, passing it my dedicated GPU. This VM does not automatically start as I don't always need it. When the VM isn't running, my desktop doesn't touch the ...
0
votes
0answers
105 views

DMAR errors on KVM PCI passthrough, server freezes

I'm using Proxmox VE 3.4.9 in a 7 nodes cluster, and I'm having some stability problems on the 4th node. Sometimes I have a very lot of error like these: Nov 17 09:48:30 node4 kernel: DMAR:[fault ...
0
votes
0answers
74 views

PCIe link is not up?

I have purchased a P4080 PCIe board from freescale which is in PCIe form factor. According to the documentation, if I connect the device into the motherboard PCIe slot and then turn it on after PC has ...
0
votes
0answers
345 views

Windows Server 2012 not starting when PCIe SSD disk installed

I have Dell Power Edge R905 server with Windows 2012 R2 installed. Everything works great until I install Plextor M6e SSD PCIe x2 card. With card inserted into PCIe x4 or PCIe x8 slot, system starts ...
0
votes
0answers
394 views

adding a 2nd network card to linux

I'm on linux mint. I've just installed a PCIe gigabit network card (from eBay!) into my linux machine. I've already had to follow this guy's instructions to get the onboard NIC working correctly. I ...