am building a RYZEN9 9950X environment to create a new GPU pass-through environment with the Rypzen9 9950X, but I feel that the PCI-E link speed is abnormal.
Motherboard: Gibagyte X870E Aorus Elite WiFi7
CPU: Reyzen9 9950X
GPU: Nvidia GTX750Ti, RTX4060Ti, AMD Radeon RX580
MEMORY: 128GB
When Linux boots, the PCI-E endpoint is determined to be legacy and is linked at Gen1.
The problem is that the SATA controller and USB 3.x controller are also linked at Gen1x1, so the connection bandwidth with the device is not reached.
The SATA controller has a link speed of 2.5GT/s x1, while the device is 6Gbps, so there is insufficient bandwidth.
Since lnkCap is displayed as 2.5GT/s x1, is it correct to say that it looks like a controller with a bandwidth below SATA?
The same is true for USB3.x, which is 5Gbps, 10Gbps, or 20Gbps compared to 2.5GT/s x1, so the bandwidth is insufficient.
LnkCap is also displayed as 2.5GT/s x1.
What about your motherboard?
dmesg|grep -e PCI |grep -e Legacy
for pcie in $(dmesg|grep -e PCI |grep -e Legacy | awk '{print $4}' | sed -e s/0000:// -e s/:$//); do lspci -vvvs $pcie | grep -e "^[0-9]" -e "Lnk" -e "Subsystem:" -e "IOMMU group"; done
Motherboard: Gibagyte X870E Aorus Elite WiFi7
CPU: Reyzen9 9950X
GPU: Nvidia GTX750Ti, RTX4060Ti, AMD Radeon RX580
MEMORY: 128GB
When Linux boots, the PCI-E endpoint is determined to be legacy and is linked at Gen1.
The problem is that the SATA controller and USB 3.x controller are also linked at Gen1x1, so the connection bandwidth with the device is not reached.
The SATA controller has a link speed of 2.5GT/s x1, while the device is 6Gbps, so there is insufficient bandwidth.
Since lnkCap is displayed as 2.5GT/s x1, is it correct to say that it looks like a controller with a bandwidth below SATA?
The same is true for USB3.x, which is 5Gbps, 10Gbps, or 20Gbps compared to 2.5GT/s x1, so the bandwidth is insufficient.
LnkCap is also displayed as 2.5GT/s x1.
What about your motherboard?
dmesg|grep -e PCI |grep -e Legacy
Code:
[ 0.487533] pci 0000:01:00.0: [10de:1380] type 00 class 0x030000 PCIe Legacy Endpoint
[ 0.499681] pci 0000:13:00.0: [1022:43fd] type 00 class 0x0c0330 PCIe Legacy Endpoint
[ 0.499933] pci 0000:14:00.0: [1022:43f6] type 00 class 0x010601 PCIe Legacy Endpoint
[ 0.500192] pci 0000:15:00.0: [1022:43fd] type 00 class 0x0c0330 PCIe Legacy Endpoint
[ 0.500363] pci 0000:16:00.0: [1022:43f6] type 00 class 0x010601 PCIe Legacy Endpoint
[ 0.502101] pci 0000:79:00.0: [1b21:2426] type 00 class 0x0c0330 PCIe Legacy Endpoint
[ 0.502289] pci 0000:7a:00.0: [1b21:2425] type 00 class 0x0c0340 PCIe Legacy Endpoint
[ 0.502580] pci 0000:7b:00.0: [1002:13c0] type 00 class 0x030000 PCIe Legacy Endpoint
[ 0.502702] pci 0000:7b:00.1: [1002:1640] type 00 class 0x040300 PCIe Legacy Endpointfor pcie in $(dmesg|grep -e PCI |grep -e Legacy | awk '{print $4}' | sed -e s/0000:// -e s/:$//); do lspci -vvvs $pcie | grep -e "^[0-9]" -e "Lnk" -e "Subsystem:" -e "IOMMU group"; done
Code:
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750 Ti] (rev a2) (prog-if 00 [VGA controller])
Subsystem: NVIDIA Corporation GM107 [GeForce GTX 750 Ti]
IOMMU group: 16
LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s (downgraded), Width x8 (downgraded)
LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-
LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
13:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43fd (rev 01) (prog-if 30 [XHCI])
Subsystem: ASMedia Technology Inc. Device 1142
IOMMU group: 42
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
14:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller (rev 01) (prog-if 01 [AHCI 1.0])
Subsystem: ASMedia Technology Inc. 600 Series Chipset SATA Controller
IOMMU group: 43
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
15:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43fd (rev 01) (prog-if 30 [XHCI])
Subsystem: ASMedia Technology Inc. Device 1142
IOMMU group: 44
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
16:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller (rev 01) (prog-if 01 [AHCI 1.0])
Subsystem: ASMedia Technology Inc. 600 Series Chipset SATA Controller
IOMMU group: 45
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
79:00.0 USB controller: ASMedia Technology Inc. Device 2426 (rev 01) (prog-if 30 [XHCI])
Subsystem: ASMedia Technology Inc. Device 2426
IOMMU group: 51
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
7a:00.0 USB controller: ASMedia Technology Inc. Device 2425 (rev 01) (prog-if 40 [USB4 Host Interface])
Subsystem: ASMedia Technology Inc. Device 2425
IOMMU group: 52
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 2.5GT/s, Width x1
LnkCap2: Supported Link Speeds: 2.5GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-
7b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Granite Ridge [Radeon Graphics] (rev c1) (prog-if 00 [VGA controller])
Subsystem: Gigabyte Technology Co., Ltd Granite Ridge [Radeon Graphics]
IOMMU group: 53
LnkCap: Port #0, Speed 16GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 16GT/s, Width x16
LnkCap2: Supported Link Speeds: 2.5-16GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
LnkCtl2: Target Link Speed: 16GT/s, EnterCompliance- SpeedDis-
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
7b:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt Radeon High Definition Audio Controller
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt Radeon High Definition Audio Controller
IOMMU group: 54
LnkCap: Port #0, Speed 16GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
LnkSta: Speed 16GT/s, Width x16
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete- EqualizationPhase1-