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Date: Tue, 19 Aug 2008 13:20:40 -0700 (PDT) From: David Miller <davem@...emloft.net> To: mh+linux-kernel@...schlus.de Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: 2.6.26/tg3 ping roundtrip times > 2000 ms on local network From: Marc Haber <mh+linux-kernel@...schlus.de> Date: Tue, 19 Aug 2008 19:20:19 +0200 [ netdev added to CC: ] > I have one HP DL 140 G1 running with Debian stable and a > locally-built, vanilla kernel. With 2.6.25.11, everything is fine. > > But, after updating to 2.6.26.2, I noticed that pinging the host on > the local ethernet sometimes (e.g. several times a minute, but not > always) results in a round-trip time of larger than two seconds. The > packets are not lost though, they're only severly delayed. For an ssh > session to the host, this feels like somebody rocking a bad network > connector. The same behavior is visible with 2.6.26 and 2.6.26.1. > > Going back to 2.6.25.11 immediately fixes the issue for me. > > Syslog doesn't say anything conspicious, unfortunately. As I don't > have local access to the box, I cannot say whether it's only the > network that freezes or whether it's the entire box. > > Does it make sense to test any later 2.6.25.x kernel, or is there any > post-2.6.26 patch available that may fix the issue for me? > > Strangely, another DL 140 from the same charge runs just fine with > 2.6.26.2. > > Here is the output of lspci -vvv for the network interface: > > 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 02) > Subsystem: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- > Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- > Latency: 64 (16000ns min), Cache Line Size: 64 bytes > Interrupt: pin A routed to IRQ 19 > Region 0: Memory at febc0000 (64-bit, non-prefetchable) [size=64K] > Region 2: Memory at febb0000 (64-bit, non-prefetchable) [size=64K] > Expansion ROM at <ignored> [disabled] > Capabilities: [40] PCI-X non-bridge device > Command: DPERE- ERO- RBC=2048 OST=1 > Status: Dev=02:00.0 64bit+ 133MHz+ SCD- USC- DC=simple DMMRBC=2048 DMOST=1 DMCRS=16 RSCEM- 266MHz- 533MHz- > Capabilities: [48] Power Management version 2 > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+) > Status: D0 PME-Enable+ DSel=0 DScale=1 PME- > Capabilities: [50] Vital Product Data > Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable- > Address: 1502da2a94a95200 Data: 3ca4 > > If there is any information that can help, please say so. > > Greetings > Marc > > -- > ----------------------------------------------------------------------------- > Marc Haber | "I don't trust Computers. They | Mailadresse im Header > Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 > Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190 > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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