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Nvme Gen5への換装と速度確認

· amgsk

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Crucial T705 4TB 3D NAND NVMe PCIe5.0 M.2 SSD 最大14,100MB/秒 CT4000T705SSD3-JP (非アソシエイトリンク)

Gen5で動作していることを確認するために以下のコマンドでリンク速度を確認。

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sudo lspci -vvv | grep -C 10 -i nvme
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...
02:00.0 Non-Volatile memory controller: Micron/Crucial Technology T705 NVMe PCIe SSD (prog-if 02 [NVM Express])
	Subsystem: Micron/Crucial Technology Device 4100
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 85
	IOMMU group: 14
	Region 0: Memory at f6d00000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [80] Express (v2) Endpoint, IntMsgNum 0
		DevCap:	MaxPayload 512 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 75W TEE-IO-
		DevCtl:	CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
			RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-
			MaxPayload 512 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 32GT/s, Width x4, ASPM L1, Exit Latency L1 unlimited
--
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr- CorrIntErr- HeaderOF-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+ CorrIntErr+ HeaderOF-
		AERCap:	First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap+ ECRCChkEn-
			MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
		HeaderLog: 00000000 00000000 00000000 00000000
	Capabilities: [294 v1] Device Serial Number 00-00-00-00-00-00-00-00
	Capabilities: [2a0 v1] Power Budgeting <?>
	Capabilities: [300 v1] Secondary PCI Express
		LnkCtl3: LnkEquIntrruptEn- PerformEqu-
		LaneErrStat: 0
	Capabilities: [340 v1] Physical Layer 16.0 GT/s <?>
	Capabilities: [378 v1] Lane Margining at the Receiver
		PortCap: Uses Driver-
		PortSta: MargReady+ MargSoftReady-
	Capabilities: [3d0 v1] Physical Layer 32.0 GT/s <?>
	Kernel driver in use: nvme
	Kernel modules: nvme
	...

以下の表示がされていることがわかる。

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PCIe Gen5 (Speed: 32GT/s, Width: x4)