List pci lanes differentiated by DMI lanes vs directly attached CPU lanes
0
Is there a way to list PCI slots (or their respective devices) and output if that slot is directly connected to the CPU, or goes through the southbridge/PCH?
pci
asked Jan 23 at 9:14
hbogerthbogert
225110
add a comment |
0
Is there a way to list PCI slots (or their respective devices) and output if that slot is directly connected to the CPU, or goes through the southbridge/PCH?
pci
asked Jan 23 at 9:14
hbogerthbogert
225110
1
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23
add a comment |
0
0
0
Is there a way to list PCI slots (or their respective devices) and output if that slot is directly connected to the CPU, or goes through the southbridge/PCH?
pci
asked Jan 23 at 9:14
hbogerthbogert
225110
Is there a way to list PCI slots (or their respective devices) and output if that slot is directly connected to the CPU, or goes through the southbridge/PCH?
pci
pci
asked Jan 23 at 9:14
hbogerthbogert
225110
asked Jan 23 at 9:14
hbogerthbogert
225110
asked Jan 23 at 9:14
hbogerthbogert
225110
asked Jan 23 at 9:14
hbogerthbogert
225110
asked Jan 23 at 9:14
hbogerthbogert
225110
225110
1
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23
add a comment |
1
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23
1
1
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23
add a comment |
1 Answer
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Is there a way to list PCI slots
Yes, you may look into lspci
man lspci
You can see what bridge is used.
You have different verbose options:
lspci -vvv being the most verbose mode.
You might also get what you want with :
hwinfo --short
Finally, you can list your slots with dmidecode -t 9
And list the on board devices with dmidecode -t 10
answered Jan 23 at 9:27
jayooinjayooin
3347
I also hopedlspciwould show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?
– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
add a comment |
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1 Answer
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1
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oldest
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0
Is there a way to list PCI slots
Yes, you may look into lspci
man lspci
You can see what bridge is used.
You have different verbose options:
lspci -vvv being the most verbose mode.
You might also get what you want with :
hwinfo --short
Finally, you can list your slots with dmidecode -t 9
And list the on board devices with dmidecode -t 10
answered Jan 23 at 9:27
jayooinjayooin
3347
I also hopedlspciwould show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?
– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
add a comment |
0
Is there a way to list PCI slots
Yes, you may look into lspci
man lspci
You can see what bridge is used.
You have different verbose options:
lspci -vvv being the most verbose mode.
You might also get what you want with :
hwinfo --short
Finally, you can list your slots with dmidecode -t 9
And list the on board devices with dmidecode -t 10
answered Jan 23 at 9:27
jayooinjayooin
3347
I also hopedlspciwould show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?
– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
add a comment |
0
0
0
Is there a way to list PCI slots
Yes, you may look into lspci
man lspci
You can see what bridge is used.
You have different verbose options:
lspci -vvv being the most verbose mode.
You might also get what you want with :
hwinfo --short
Finally, you can list your slots with dmidecode -t 9
And list the on board devices with dmidecode -t 10
answered Jan 23 at 9:27
jayooinjayooin
3347
Is there a way to list PCI slots
Yes, you may look into lspci
man lspci
You can see what bridge is used.
You have different verbose options:
lspci -vvv being the most verbose mode.
You might also get what you want with :
hwinfo --short
Finally, you can list your slots with dmidecode -t 9
And list the on board devices with dmidecode -t 10
answered Jan 23 at 9:27
jayooinjayooin
3347
edited Jan 23 at 9:32
answered Jan 23 at 9:27
jayooinjayooin
3347
answered Jan 23 at 9:27
jayooinjayooin
3347
answered Jan 23 at 9:27
jayooinjayooin
3347
3347
I also hopedlspciwould show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?
– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
add a comment |
I also hopedlspciwould show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?
– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
I also hoped
lspci would show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?– hbogert
Jan 23 at 9:49
I also hoped
lspci would show me the bridge, but I can't find it anywhere while I list it. Do you happen to have example output which shows the difference between a device connected to the PCH and a device connected to the CPU?– hbogert
Jan 23 at 9:49
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
It is unclear what you mean with a device connected to the CPU. The CPU is connected to the motherboard. So it is listed as a "device" itself.
– jayooin
Jan 23 at 9:53
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
Well I hoped this clear distinction was made clear in the Question; In the context of pci-express lanes, devices can be directly connected to the CPU, without there being a southbridge/PCH in the communication path. On (intel) consumer platforms it is common that the x16 PCI-e slot is directly connected to the motherboard. Whereas the rest of PCI-e slots are connected to the PCH, which in turn has a DMI conection to the CPU. The DMI connection can be seen as a, often, x4 PCI-e connection. In the case of server platforms, it depends on the vendor how they distribute slots
– hbogert
Jan 23 at 9:58
add a comment |
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1
Seems my question is a duplicate of superuser.com/questions/1375202/…
– hbogert
Jan 23 at 10:23