On Jul 4, 2010, at 5:52 PM, David Warren wrote:
> Hi all,
>
> I've got a persistent problem with my LAN. I'm running a FreeBSD 8.0
> box as a home server performing the following functions for wired and
> wireless networks: router; firewall; DHCP server; and file server. For what
> it's worth, I've got ZFS up and running as the main filesystem. The
> recurring issue is that file transfers from the FreeBSD box to computers on
> the wired network (gigabit) start out fast and then become agonizingly
> slow. I'm sharing home directories over Samba, and those transfers work
> briefly and then tail off to a few kilobytes per second. The failure is
> somewhat predicatable in that it tends to happen once a few hundred
> megabytes have been transferred. I've swapped out hardware, I've Googled
> extensively, and all of the (possibly benign) error messages that I've found
> have been eliminated. I'm happy to post logs, configs, etc., and I'd
> appreciate any help with a diagnosis. For the moment:
Disable rxcsum and txcsum on the cards; see if that does the trick.
Before that, I'd see whether or not Jack Vogel (the current em(4)
maintainer) would some details about your traffic, like a tcpdump session log.
HTH,
-Garrett_______________________________________________
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