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Date: Mon, 08 Sep 2003 12:54:05 -0300
From: Alexandre Biancalana <ale@seudns.net>
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Subject: Slow Adaptec Quad-Nic
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Hi All,
   
    I have a Firewall/Gateway with an Quad-NIC Adaptec ANA6944A, that 
when I'm doing a big download, the switch port where the machine is 
connected points that's is down and the following messages appear in 
/var/log/messages:

Sep  8 10:53:41 Krusty /kernel: sf0: watchdog timeout
Sep  8 10:54:59 Krusty /kernel: sf0: watchdog timeout
Sep  8 11:01:53 Krusty /kernel: sf0: TX ring full, resetting
Sep  8 11:01:57 Krusty /kernel: sf0: watchdog timeout
Sep  8 11:14:37 Krusty /kernel: sf0: watchdog timeout
Sep  8 11:20:11 Krusty /kernel: sf0: TX ring full, resetting
Sep  8 11:20:14 Krusty /kernel: sf0: TX ring full, resetting
Sep  8 11:45:26 Krusty /kernel: sf0: TX ring full, resetting
Sep  8 12:03:38 Krusty /kernel: sf0: TX ring full, resetting
Sep  8 12:03:41 Krusty /kernel: sf0: TX ring full, resetting

The transfers are been slowed down by 1/2 off total bandwitch available 
in this link, that's 1Mbit/s but the transfers don't exceed 700 Kbit/s.....

After google, I have seen some case about that but without an solution.

  Best Regards,
 
   Alexandre