Date: Tue, 24 Dec 2013 16:11:33 +0100 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: Re: Graphical console in stable/10 stuck on heavy writing Message-ID: <201312241611.33886.Mark.Martinec%2Bfreebsd@ijs.si> In-Reply-To: <CAJ-Vmo=ZpBO10z_Ugea3LDDzcf0oj3xxjGNaoGKBw2DOXX9FSQ@mail.gmail.com> References: <52B78808.1090802@ijs.si> <CAJ-Vmo=ZpBO10z_Ugea3LDDzcf0oj3xxjGNaoGKBw2DOXX9FSQ@mail.gmail.com>
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Adrian Chadd <adrian@freebsd.org> writes: > I see this when the kernel is outputting debugging .. the console can > quickly lock up exactly how you describe. I've never figured out why > though. :( Thanks for confirming. I opened a PR misc/185156 http://www.freebsd.org/cgi/query-pr.cgi?pr=185156 Mark > On 22 December 2013 16:47, Mark Martinec wrote: > > FreeBSD amd64, recent stable/10: > > > > When running some task on a graphical console window > > and that task writes lots of output to a console, the > > console gets stuck after some time (like 20 minutes), > > output stops, keyboard appears unresponsive, alt-ctrl-Fn > > is unable to switch consoles - but the machine seems > > otherwise sane: I can log in over ssh, file system and > > processes are healthy, CPU not busy. > > > > This was first noticed trying to rebuild kde from > > ports in a console window. Same happened when bulk > > updating packages from a remote site and the pkg update > > was busily writing its output to a console. > > > > The same heavy tasks (e.g. ports rebuild) can run > > just fine in an ssh session, or in a konsole / xterm. > > > > As a final proof, I tried a perl one-liner which > > writes a line (a count and some text) ten times per > > second: it manages to screw up the console window > > in about 6 minutes. > > > > Interestingly, while the console output is stuck > > and I blindly type a command on a keyboard (no echo), > > then run a shutdown from another (ssh) session, > > the console output gets unstuck during shutdown, > > rapidly displays the missing lines, including the > > echo of a command typed blindly previously, along > > with its output. > > > > Btw, this never happened on this machine while it was > > running 9.2 or older versions. > > > > Anybody seen this or can reproduce it? > > Mark
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