Linux查看PCIe版本及速率

原创已于 2024-09-26 09:39:59 修改 · 996 阅读

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于 2024-09-15 17:25:49 首次发布

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root@localhost:/home/jon# dmidecode | grep --color "PCI"
		PCI is supported
	Internal Reference Designator: J9C1 - PCIE DOCKING CONN
	Type: x4 PCI Express 2 x4
	Type: x2 PCI Express 2 x2
root@localhost:/home/jon# lspci -tv
-[0000:00]-+-00.0  Intel Corporation Gemini Lake Host Bridge
           +-02.0  Intel Corporation GeminiLake [UHD Graphics 600]
           +-0e.0  Intel Corporation Celeron/Pentium Silver Processor High Definition Audio
           +-0f.0  Intel Corporation Celeron/Pentium Silver Processor Trusted Execution Engine Interface
           +-12.0  Intel Corporation Celeron/Pentium Silver Processor SATA Controller
           +-13.0-[01]----00.0  Intel Corporation Ethernet Controller I226-V
           +-13.1-[02]----00.0  Intel Corporation Ethernet Controller I226-V
           +-13.2-[03]----00.0  Intel Corporation Ethernet Controller I226-V
           +-13.3-[04]----00.0  Intel Corporation Ethernet Controller I226-V
           +-14.0-[05]--
           +-14.1-[06]----00.0  Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961/SM963
           +-15.0  Intel Corporation Celeron/Pentium Silver Processor USB 3.0 xHCI Controller
           +-1f.0  Intel Corporation Celeron/Pentium Silver Processor LPC Controller
           \-1f.1  Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model


# 查看nvme 硬盘设备id
root@localhost:/home/jon# lspci | grep -i nvme
06:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961/SM963

# device id
root@localhost:/home/jon# lspci -n |grep -i 06:00.0
06:00.0 0108: 144d:a804

# 指定PCI设备的带宽
root@localhost:/home/jon# lspci -n -d 144d:a804  -vvv | grep --color  Width
		LnkCap:	Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency L1 <64us
		LnkSta:	Speed 5GT/s (downgraded), Width x1 (downgraded)