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    SubjectRe: 2.6.27.19 + 28.7: network timeouts for r8169 and 8139too
    Date
    On Sun May 10 2009, Michael S. Zick wrote:
    > On Sun May 10 2009, Michael Riepe wrote:
    > >
    > > Michael Buesch wrote:
    > >
    > > > I'm currently testing 2.6.29.1 without any additional patches but
    > > > with the pci=nomsi boot option.
    > > >
    > > > I didn't notice any hickups, yet. I'm running a stresstest on a GBit link for quite
    > > > some time now. Earlier tests with older kernels and MSI burped earlier.
    > > >
    >
    > I can confirm greater through-put and reduced cpu usage with pci=nomsi
    > on different hardware.
    >
    > Machine: Everex Cloudbook (ce1200v)
    > HICS: Via CX700
    > PCI-to-PCIe bridge, Via 1106:324B
    > (only) Downstream device: HD Audio Controller, Via 1106:3288
    >
    > Kernel: 2.6.30-rc5 (git repo)
    >
    > No extensive benchmarking required here - you can hear the difference!
    >
    > 00:13.1 PCI bridge [0604]: VIA Technologies, Inc. CX700/VX700 PCI to PCI Bridge [1106:324a]
    > 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
    > Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
    > I/O behind bridge: 00005000-00005fff
    > Memory behind bridge: d1100000-d11fffff
    > Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
    > Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- <SERR- <PERR-
    > BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
    > PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
    >

    Ooops - cut&paste error

    00:13.0 PCI bridge [0604]: VIA Technologies, Inc. CX700/VX700 Host Bridge [1106:324b]
    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
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    I/O behind bridge: 0000f000-00000fff
    Memory behind bridge: d1000000-d10fffff
    Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
    Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- <SERR- <PERR-
    BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
    PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-

    Mike
    > 02:01.0 Audio device [0403]: VIA Technologies, Inc. VT1708/A [Azalia HDAC] (VIA High Definition Audio Controller) [1106:3288] (rev 10)
    > Subsystem: FIRST INTERNATIONAL Computer Inc Device [1509:2f07]
    > 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: 32 bytes
    > Interrupt: pin A routed to IRQ 17
    > Region 0: Memory at d1000000 (64-bit, non-prefetchable) [size=16K]
    > Capabilities: [50] Power Management version 2
    > Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
    > Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    > Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
    > Address: 0000000000000000 Data: 0000
    > Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
    > DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
    > ExtTag- RBE- FLReset-
    > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
    > RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
    > MaxPayload 128 bytes, MaxReadReq 128 bytes
    > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend+
    > LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us
    > ClockPM- Suprise- LLActRep- BwNot-
    > LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
    > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    > LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
    > Kernel driver in use: HDA Intel
    >
    > Mike
    > > > I will do more testing. If it turns out this is stable I will test the same kernel
    > > > with Message Signaled Interrupts to see if that causes some breakage.
    > >
    > > I've had this problem up to and including 2.6.29.2. Currently, I'm
    > > trying 2.6.29.2 with pci=nomsi, and it's stable so far. With MSI
    > > enabled, a single high-speed TCP transfer will stop after a few seconds,
    > > but without MSI, I can run four simultaneous transfers to two different
    > > hosts without a single hickup.
    > >
    > > It seems to me that this particular chip really doesn't like MSI.
    > >
    > > Kernel: 2.6.29.2 (x86_64)
    > > Board: Intel D945GCLF2
    > > BIOS version: LF94510J.86A.0099.2008.0731.0303
    > >
    > > lspci -vv:
    > > 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
    > > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
    > > Subsystem: Intel Corporation Device 0001
    > > 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 16
    > > Region 0: I/O ports at 1000 [size=256]
    > > Region 2: Memory at 90100000 (64-bit, non-prefetchable) [size=4K]
    > > Region 4: Memory at 90000000 (64-bit, prefetchable) [size=64K]
    > > Expansion ROM at 90020000 [disabled] [size=128K]
    > > Capabilities: [40] Power Management version 3
    > > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
    > > PME(D0+,D1+,D2+,D3hot+,D3cold+)
    > > Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    > > Capabilities: [50] MSI: Mask- 64bit+ Count=1/1 Enable-
    > > Address: 0000000000000000 Data: 0000
    > > Capabilities: [70] Express (v1) Endpoint, MSI 01
    > > DevCap: MaxPayload 256 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-
    > > MaxPayload 128 bytes, MaxReadReq 4096 bytes
    > > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+
    > > TransPend-
    > > LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
    > > Latency L0 <512ns, L1 <64us
    > > ClockPM+ Suprise- LLActRep- BwNot-
    > > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain-
    > > CommClk+
    > > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    > > LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
    > > DLActive- BWMgmt- ABWMgmt-
    > > Capabilities: [b0] MSI-X: Enable- Mask- TabSize=2
    > > Vector table: BAR=4 offset=00000000
    > > PBA: BAR=4 offset=00000800
    > > Capabilities: [d0] Vital Product Data <?>
    > > Kernel driver in use: r8169
    > > Kernel modules: r8169
    > >
    >
    >
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