On Wed, May 13, 2009 at 06:42:07PM +0200, Greg Byshenk wrote: > As a followup to my own previous message, I continue to have annoying > problems with "em?: watchdog timeout" on one of my machines (now running > 7.2-STABLE as of 2009-05-08). > > I have discontinued using the on-board (em, copper) NICs, and replaced > the original fibre NIC with a newer model, but the problem persists. > I've also set > > hw.pci.enable_msix=0 > hw.pci.enable_msi=0 > hw.em.rxd=1024 > hw.em.txd=1024 > net.inet.tcp.tso=0 > > ...as suggested in some discussions of this problem, and set the em1 > interface to 'polling', all to no avail. Frequently, though irregularly > (once or twice a day), the console begins to display > > em1: watchdog timeout -- resetting > em1: watchdog timeout -- resetting > em1: watchdog timeout -- resetting > > the nework is down, and the machine locks up. > > [Note: I am getting 'em1' now instead of 'em0' as previously, but this > is due to changing all of the nics, which led to a different numbering; > the timeout is still occurring on the (main) interface, the fibre > gigabit connection.] > > What is particularly perverse (IMO) is that, since changing the NIC to > the newer model (and updating the kernel), I can no longer break to the > debugger when the lockup occurs (there is no response to the break) -- > bit I _can_ shut the machine down cleanly via hardware (a touch of the > power switch sends 'shutdown', and the machine shuts down cleanly -- > after killing off processes waiting on network i/o). > > The machine is running nfs and samba (3.2.10, from ports), and pretty > much nothing else. > > > Anyone have any ideas about this...? I'm going mad with this.
Just as an FYI, the drive errors I described in my previous message appear to have been due to a bad BBU on the RAID controller, and to have been resolved. -- greg byshenk - gbysh...@byshenk.net - Leiden, NL _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"