Administrace komentářů

Pridal jsem do serveru kartu 2x 10Gbit Supermicro-AOC-STG-i2T

Ale ovladace intelu mi hlasi ze "Speed:2.5GT/s, Width: x8, Encoding Loss:20%", pritom lspci rika ze na slotu je mozna podpora 5GT/s. Proc se teda nedomluvi na vyssi frekvenci aby byla pozadovana rychlost pokryta ? Co presne zamenaji radky na vypisu lspci "LnkCap,LnkStat" a proc jsou tam i "LnkCap2" a "LnkStat2". Predpokladam LnkCap rika jaka jsou schopnosti PCI-e sbernice a LnkStat rika jaky je aktualni stav?

Vypis "lspci -v -v":

86:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
        Subsystem: Super Micro Computer Inc Device 1528
        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 B routed to IRQ 42
        Region 0: Memory at cee00000 (64-bit, prefetchable) [size=2M]
        Region 4: Memory at cedfc000 (64-bit, prefetchable) [size=16K]
        Expansion ROM at cff80000 [disabled] [size=512K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
                Address: 0000000000000000  Data: 0000
                Masking: 00000000  Pending: 00000000
        Capabilities: [70] MSI-X: Enable+ Count=64 Masked-
                Vector table: BAR=4 offset=00000000
                PBA: BAR=4 offset=00002000
        Capabilities: [a0] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
                DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
                LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s L1, Latency L0 <512ns, L1 <4us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [100 v2] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [140 v1] Device Serial Number a0-36-9f-ff-ff-01-b4-d0
        Capabilities: [150 v1] Alternative Routing-ID Interpretation (ARI)
                ARICap: MFVC- ACS-, Next Function: 1
                ARICtl: MFVC- ACS-, Function Group: 0
        Capabilities: [160 v1] Single Root I/O Virtualization (SR-IOV)
                IOVCap: Migration-, Interrupt Message Number: 000
                IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy-
                IOVSta: Migration-
                Initial VFs: 64, Total VFs: 64, Number of VFs: 64, Function Dependency Link: 00
                VF offset: 384, stride: 2, Device ID: 1515
                Supported Page Size: 00000553, System Page Size: 00000001
                Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)
                Region 3: Memory at 0000000000000000 (64-bit, non-prefetchable)
                VF Migration: offset: 00000000, BIR: 0
        Capabilities: [1d0 v1] Access Control Services
                ACSCap: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- EgressCtrl- DirectTrans-
                ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- EgressCtrl- DirectTrans-
        Kernel driver in use: ixgbe

Vypis "dmesg"

ixgbe 0000:86:00.0: (PCI Express:2.5GT/s:Width x8) 00:25:90:ca:a2:74
ixgbe 0000:86:00.0: eth2: MAC: 3, PHY: 3, PBA No: G36748-001
ixgbe 0000:86:00.0: PCI Express bandwidth of 16GT/s available
ixgbe 0000:86:00.0: (Speed:2.5GT/s, Width: x8, Encoding Loss:20%)
ixgbe 0000:86:00.0: This is not sufficient for optimal performance of this card.
ixgbe 0000:86:00.0: For optimal performance, at least 20GT/s of bandwidth is required.
ixgbe 0000:86:00.0: A slot with more lanes and/or higher speed is suggested.
ixgbe 0000:86:00.0: eth2: Enabled Features: RxQ: 8 TxQ: 8 FdirHash RSC 
ixgbe 0000:86:00.0: eth2: Intel(R) 10 Gigabit Network Connection

Nenapada nekoho v cem je problem.

Dik