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Message-ID: <20070121140421.GA13425@linuxtv.org> Date: Sun, 21 Jan 2007 15:04:21 +0100 From: Johannes Stezenbach <js@...uxtv.org> To: Willy Tarreau <w@....eu> Cc: Theodore Tso <tytso@....edu>, Joe Barr <joe@...rimer.com>, Linux Kernel mailing List <linux-kernel@...r.kernel.org> Subject: Re: Serial port blues On Sun, Jan 21, 2007 at 08:05:57AM +0100, Willy Tarreau wrote: > On Sun, Jan 21, 2007 at 12:54:56AM -0500, Theodore Tso wrote: > > On Sat, Jan 20, 2007 at 06:36:44PM +0100, Willy Tarreau wrote: > > > > > Now he must be careful about avoiding busy loops in the rest of the > > > program, or he will have to use the reset button. > > > > An easy way of dealing with this is to have an sshd running > > an alternative port running at a nice high priority (say, prio 95 or > > so). That way, if you screw up, you can always login remotely and > > kill the offending program. > > > > There is also a RT Watchdog program which can be found on > > rt.wiki.kernel.org which can be used to recover from runaway real-time > > processes without needing to hit the reset button. > > Thanks for those hints, I've been used to play with the reset button, > at least it has forced me to double check my code before running it :-) I think SysRq-N sets all processes with RT-priority to non-RT. Johannes - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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