Date: Thu, 18 Aug 2005 23:19:37 +0200 From: Uwe Doering <gemini@geminix.org> To: "Michael R. Wayne" <wayne@staff.msen.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Reducing dummynet pipe size hangs system Message-ID: <4304FB69.3000500@geminix.org> In-Reply-To: <200508181717.j7IHHaxW044139@manor.msen.com> References: <200508181717.j7IHHaxW044139@manor.msen.com>
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Michael R. Wayne wrote: > Summary: > On an old (4.8p10) machine, substantially reducing the pipe size > on a loaded connection causes the system to freeze. > > Is this a supported feature? > > Did it usd to be broken? > > Detail: > [...] > > Two days in a row now, just after 6:30, the box freezes, refusing > keyboard input and requiring a reboot. > > Queries: > Is this considered an unsupported use of dummynet? > > If it should work, was it broken back in 4.8 and, if so, when > was it corrected? I'd rather not take the time up upgrade the > box to 4.11 if I'll then be forced to move to 5.4. There were changes in dummynet's configuration functions that, among other things, dealt with protecting certain code sequences with the proper SPL. They went into the CVS repository after 4.8. I can't tell whether these fixes would help in your case but you may want to look at rev. 1.24.2.22 and 1.24.2.25 (RELENG_4) in any case: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/ip_dummynet.c?only_with_tag=RELENG_4 Uwe -- Uwe Doering | EscapeBox - Managed On-Demand UNIX Servers gemini@geminix.org | http://www.escapebox.net
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