Date: Fri, 25 Jun 1999 12:09:35 -0400 (EDT) From: Nickolai Zeldovich <kolya@round.cde.com> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/12394: 3.2-RELEASE, rl0 ethernet interface freezes Message-ID: <199906251609.MAA26304@round.cde.com>
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>Number: 12394 >Category: kern >Synopsis: 3.2-RELEASE, rl0 ethernet interface freezes >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Jun 25 09:10:02 PDT 1999 >Closed-Date: >Last-Modified: >Originator: Nickolai Zeldovich >Release: FreeBSD 3.2-RELEASE i386 >Organization: CDE (www.cde.com) >Environment: CPU: Pentium II/Xeon/Celeron (350.80-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x652 Stepping=2 Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,<b24>> real memory = 268435456 (262144K bytes) [..] rl0: <RealTek 8139 10/100BaseTX> rev 0x10 int a irq 11 on pci0.9.0 rl0: Ethernet address: 00:60:67:70:75:08 rl0: autoneg complete, link status good (half-duplex, 10Mbps) rl1: <RealTek 8139 10/100BaseTX> rev 0x10 int a irq 10 on pci0.10.0 rl1: Ethernet address: 00:60:67:70:e5:7a rl1: autoneg complete, link status good (half-duplex, 10Mbps) [..] IP packet filtering initialized, divert disabled, rule-based forwarding disabled, logging disabled DUMMYNET initialized (990504) This machine is running DUMMYNET for traffic shaping. The majority of traffic comes in via rl0 and leaves via rl0 as well. >Description: Every so often (perhaps once in a few days) the rl0 interface appears to freeze - no traffic can go through it. However, rl1 remains up and functional. Doing 'ifconfig rl0 down ; ifconfig rl0 up' always fixes the problem (this seems to be related to kern/8861). This does not seem to be due to mbuf clusters (and has different failure mode): % netstat -m 43/224 mbufs in use: 35 mbufs allocated to data 8 mbufs allocated to packet headers 25/154/6144 mbuf clusters in use (current/peak/max) 336 Kbytes allocated to network (16% in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines >How-To-Repeat: Send large amounts of traffic through a machine and possibly apply a traffic shaper. Time between failures seems to vary: sometimes we have it running fine for days, and sometimes it freezes after being fixed only a few hours ago. The traffic stays constant over time. >Fix: Run a cron job to verify network connectivity and run 'ifconfig rl0 down ; ifconfig rl0 up' if failure is detected. (Not really a fix). >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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