What is your link partner? Can you disable EEE on the parner? Did you replace the cable?
Todd Fujinaka Software Application Engineer Networking Division (ND) Intel Corporation todd.fujin...@intel.com (503) 712-4565 -----Original Message----- From: Yilmaz, D. [mailto:d.yil...@rug.nl] Sent: Monday, June 01, 2015 1:54 AM To: e1000-devel@lists.sourceforge.net Subject: [E1000-devel] 1 Gb. network speed often drops to 100 Mb. Dear All, I am using on-board Intel igb network module on my one of the CentOS 6 servers. The network speed often drops to 100 Mb and I could not understand what's wrong with it. Could you please tell me what could be the problem? My kernel release on that server is 2.6.32-504.16.2.el6.x86_64 and the ethernet driver is V 5.2.15. ( I installed kmod-hp-igb-5.2.15-2.rhel6u6.x86_64.rpm ). The details of the hardware : 02:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) Subsystem: Hewlett-Packard Company NC362i Integrated Dual port Gigabit Server Adapter 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 28 Region 0: Memory at fbce0000 (32-bit, non-prefetchable) [size=128K] Region 1: Memory at fbcc0000 (32-bit, non-prefetchable) [size=128K] Region 2: I/O ports at 4000 [size=32] Region 3: Memory at fbcb0000 (32-bit, non-prefetchable) [size=16K] [virtual] Expansion ROM at ef000000 [disabled] [size=128K] 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=10 Masked- Vector table: BAR=3 offset=00000000 PBA: BAR=3 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 256 bytes, MaxReadReq 4096 bytes DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x4, ASPM L0s L1, Latency L0 <4us, L1 <64us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR-, OBFF Disabled LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [100 v1] 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 78-e7-d1-ff-ff-62-8f-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: 8, Total VFs: 8, Number of VFs: 0, Function Dependency Link: 00 VF offset: 128, stride: 2, Device ID: 10ca Supported Page Size: 00000553, System Page Size: 00000001 Region 0: Memory at 00000000fbc00000 (64-bit, non-prefetchable) Region 3: Memory at 00000000fbc20000 (64-bit, non-prefetchable) VF Migration: offset: 00000000, BIR: 0 Kernel driver in use: igb Kernel modules: igb And this is my module details : modinfo igb filename: /lib/modules/2.6.32-504.16.2.el6.x86_64/weak-updates/hp-igb/igb.ko version: 5.2.15 license: GPL description: Intel(R) Gigabit Ethernet Network Driver author: Intel Corporation, <e1000-devel@lists.sourceforge.net> srcversion: ED3CC1731051E90002E99E7 alias: pci:v00008086d000010D6sv*sd*bc*sc*i* alias: pci:v00008086d000010A9sv*sd*bc*sc*i* alias: pci:v00008086d000010A7sv*sd*bc*sc*i* alias: pci:v00008086d000010E8sv*sd*bc*sc*i* alias: pci:v00008086d00001526sv*sd*bc*sc*i* alias: pci:v00008086d0000150Dsv*sd*bc*sc*i* alias: pci:v00008086d000010E7sv*sd*bc*sc*i* alias: pci:v00008086d000010E6sv*sd*bc*sc*i* alias: pci:v00008086d00001518sv*sd*bc*sc*i* alias: pci:v00008086d0000150Asv*sd*bc*sc*i* alias: pci:v00008086d000010C9sv*sd*bc*sc*i* alias: pci:v00008086d00000440sv*sd*bc*sc*i* alias: pci:v00008086d0000043Csv*sd*bc*sc*i* alias: pci:v00008086d0000043Asv*sd*bc*sc*i* alias: pci:v00008086d00000438sv*sd*bc*sc*i* alias: pci:v00008086d00001516sv*sd*bc*sc*i* alias: pci:v00008086d00001511sv*sd*bc*sc*i* alias: pci:v00008086d00001510sv*sd*bc*sc*i* alias: pci:v00008086d00001527sv*sd*bc*sc*i* alias: pci:v00008086d0000150Fsv*sd*bc*sc*i* alias: pci:v00008086d0000150Esv*sd*bc*sc*i* alias: pci:v00008086d00001524sv*sd*bc*sc*i* alias: pci:v00008086d00001523sv*sd*bc*sc*i* alias: pci:v00008086d00001522sv*sd*bc*sc*i* alias: pci:v00008086d00001521sv*sd*bc*sc*i* alias: pci:v00008086d00001539sv*sd*bc*sc*i* alias: pci:v00008086d0000157Csv*sd*bc*sc*i* alias: pci:v00008086d0000157Bsv*sd*bc*sc*i* alias: pci:v00008086d00001538sv*sd*bc*sc*i* alias: pci:v00008086d00001537sv*sd*bc*sc*i* alias: pci:v00008086d00001536sv*sd*bc*sc*i* alias: pci:v00008086d00001533sv*sd*bc*sc*i* alias: pci:v00008086d00001F45sv*sd*bc*sc*i* alias: pci:v00008086d00001F41sv*sd*bc*sc*i* alias: pci:v00008086d00001F40sv*sd*bc*sc*i* depends: i2c-core,ptp,dca,i2c-algo-bit vermagic: 2.6.32-504.el6.x86_64 SMP mod_unload modversions parm: InterruptThrottleRate:Maximum interrupts per second, per vector, (max 100000), default 3=adaptive (array of int) parm: IntMode:Change Interrupt Mode (0=Legacy, 1=MSI, 2=MSI-X), default 2 (array of int) parm: Node:set the starting node to allocate memory on, default -1 (array of int) parm: LLIPort:Low Latency Interrupt TCP Port (0-65535), default 0=off (array of int) parm: LLIPush:Low Latency Interrupt on TCP Push flag (0,1), default 0=off (array of int) parm: LLISize:Low Latency Interrupt on Packet Size (0-1500), default 0=off (array of int) parm: RSS:Number of Receive-Side Scaling Descriptor Queues (0-8), default 1, 0=number of cpus (array of int) parm: VMDQ:Number of Virtual Machine Device Queues: 0-1 = disable, 2-8 enable, default 0 (array of int) parm: max_vfs:Number of Virtual Functions: 0 = disable, 1-7 enable, default 0 (array of int) parm: MDD:Malicious Driver Detection (0/1), default 1 = enabled. Only available when max_vfs is greater than 0 (array of int) parm: QueuePairs:Enable Tx/Rx queue pairs for interrupt handling (0,1), default 1=on (array of int) parm: EEE:Enable/disable on parts that support the feature (array of int) parm: DMAC:Disable or set latency for DMA Coalescing ((0=off, 1000-10000(msec), 250, 500 (usec)) (array of int) parm: LRO:Large Receive Offload (0,1), default 0=off (array of int) parm: debug:Debug level (0=none, ..., 16=all) (int) ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
