Hiroki Sato <h...@freebsd.org> wrote in <20091203.182931.129751456....@allbsd.org>:
hr> And another thing, I noticed a box with 82573E and 82573L sometimes hr> got stuck after upgrading to 8.0-STABLE. It has moderate network hr> load (average 5-10Mbps) on both NICs. It worked for a day or two and hr> then got stuck suddenly. Rebooting the box solved the situation, but hr> it got stuck again after a day or so. After it happens, the hr> interface does not respond. The other functionalities of FreeBSD hr> seemed working. Doing an up/down cycle for the NICs seemed to send hr> some packets, but it did not recover completely; rebooting was needed hr> for recovery. This box does not have the RTT problem. I am still hr> not sure what is the trigger, there seems something wrong. Things turned out for this symptom so far are: - This occurs around once per 1-2 days. - Once it occurs, all of communications including ARP and IPv4 stop. - "ifconfig em0 down/up" can recover the interface. However, on doing "up" after "down" the following message was displayed: # ifconfig em0 up em0: Could not setup receive structures After trying it several times it worked. Then, the interface seemed back to normal for a couple of minutes, but it stopped again. I guess there is a kind of deadlock somewhere but not sure it is really related to the em(4) driver. I will continue to investigate anyway. -- Hiroki
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