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List:       freebsd-hackers
Subject:    Re: Temporary freezes on a Compaq
From:       Mike Smith <mike () smith ! net ! au>
Date:       1998-02-27 11:08:47
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> Apparently every so often (quite frequently) all activity on the machine
> freezes for 3-4 seconds and then resumes. Or rather, all network activity;
> no one is actually working on the console so I don't know whether this
> applies to non-network activity as well. I asked him to check the load,
> free memory, etc, to try to determine whether it is simply caused by
> bus-mastering disk activity; however, it seems the load is not very high
> and there is no obvious cause related to disk I/O.
> 
> Has anyone experienced this? Is it perhaps related to the 3C509 driver?
> Any suggestions would be appreciated.

This sounds like a symptom of a known feature of the 3c509 with FreeBSD,
where when an interrupt is lost, all network traffic stops until the 
timeout handler catches the situation.

-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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