From owner-freebsd-arm@freebsd.org Fri Mar 9 23:24:45 2018 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 84E3FF2F9E9 for ; Fri, 9 Mar 2018 23:24:45 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [69.239.235.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "www.zefox.org", Issuer "www.zefox.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id EDB7B7329F; Fri, 9 Mar 2018 23:24:44 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.15.2/8.15.2) with ESMTPS id w29NOi5g066180 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 9 Mar 2018 15:24:45 -0800 (PST) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.15.2/8.15.2/Submit) id w29NOiXK066179; Fri, 9 Mar 2018 15:24:44 -0800 (PST) (envelope-from fbsd) Date: Fri, 9 Mar 2018 15:24:44 -0800 From: bob prohaska To: "Michael Mitchell (megabyte)" Cc: Ian Lepore , freebsd-arm@freebsd.org, bob prohaska Subject: Re: Garbled console output on Pi3 Message-ID: <20180309232444.GB65874@www.zefox.net> References: <20180307182117.GA55819@www.zefox.net> <1520628270.84937.56.camel@freebsd.org> <1F29E846-6EFE-4966-85BC-742F0B59B774@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1F29E846-6EFE-4966-85BC-742F0B59B774@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Mar 2018 23:24:45 -0000 On Fri, Mar 09, 2018 at 01:05:27PM -0800, Michael Mitchell (megabyte) wrote: > This happens to me when the cable FTDI USB/232TTL isn't seated very well. Pin header connectors do have > a limited cycle count, and become loose over time. The first thing I always blame is the cable... > > Michael Mitchell > I tried switching usb-serial adapters, in this case going from pl2303 to ftdi-232. Didn't make any difference. On connection, the console output looks fine. When I started up stress2 (as a regular, unpriviledged user) the console started putting out Mar 9 15:18:31 www kernel: ecsmedn tt hsrc2h epdid_ yi8e8l1d9 Mar 9 15:18:31 www kernel: <3t>crmide d tthor 2u spei dn oi8d8 n1-9898 1pt9r9r iterdi etdo tuessee nnto n-spcrheesde_nyti eslcdh Mar 9 15:18:31 www kernel: d_ycimedl dt Mar 9 15:18:31 www kernel: r2c mpdi dt hr828 1p9i9d tr8i8e1d9 9ot tursoiee dnu ostneo- unsoen -nporne-spernets enstc hsecdh_eydi_eylide Mar 9 15:18:31 www kernel: d Mar 9 15:18:31 www kernel: mdc mtdh rt2h rp2i dp id8 81898199 9t rtireide dt ot ou sues en onno-np-rperseesnetn tpsrce sheends_tyci ehlesddc_ Mar 9 15:18:31 www kernel: ield In this particular case, the other four ssh sessions began to exhibit snippets of scrambled out put also, for example Message from syslogd@www at Mar 9 15:18:31 ... www kernel: rc2m d and last pid: 89780; load averages: 16.42, 43.26, 23.613 up 0+21:25:33 15:21:17 45 processes: 1 running, 40 sleeping, 4 zombie CPU: 0.0% user, 0.0% nice, 1.3% system, 5.7% interrupt, 93.0% idle Mem: 13M Active, 2868K Inact, 105M Wired, 12M Buf, 788M Free Swap: 4096M Total, 34M Used, 4062M Free Message from syslogd@www at Mar 9 15:18:31 ...ATE C TIME WCPU COMMAND 88255 bob : rc2m d0c18d20tthr2 11128K 296K ufs 2 0:00 0.48% dirrename 88248 bob ldd_ 1 20 0 11128K 296K ufs 1 0:00 0.47% dirrename 88253 bob 1 20 0 11128K 292K ufs 1 0:00 0.45% dirrename 88254 bob 1 20 0 11128K 292K biowr 1 0:00 0.45% dirrename 88256 bob 1 20 0 11128K 296K ufs 3 0:00 0.43% dirrename 88249 bob 1 20 0 11128K 292K ufs 1 0:00 0.42% dirrename 88252 bob 1 20 0 11128K 292K ufs 1 0:00 0.41% dirrename also bob@www:/usr/src % Message from syslogd@www at Mar 9 15:16:06 ... www kernel: 38 8t2r0i0e dt rtioe du stedo nutoshner- 2pn ropeisde nn8t8 2-2psr3c hetesrdeinetd _ sytciohe eldd_ Message from syslogd@www at Mar 9 15:18:29 ... www kernel: 83s2>c0cm8d tthr2 pidd t8o8 us208e tnroine-dp rteos eunhseetd nsocnh-epdr_eysieenltdr Message from syslogd@www at Mar 9 15:18:31 ... www kernel: rc2m d and finally, in the session where stress2 was running 15:15:20 Loop #1 rw: run time 0+00:02:00, incarnations 8, load 70, verbose 1 swap: run time 0+00:02:00, incarnations 30, load 80, verbose 1 symlink: run time 0+00:02:00, incarnations 11, load 20, verbose 1 thr2: run time 0+00:02:00, incarnations 13, load 20, verbose 1 creat: run time 0+00:02:00, incarnations 9, load 80, verbose 1 dirrename: run time 0+00:02:00, incarnations 9, load 20, verbose 1 Message from syslogd@www at Mar 9 15:16:06 ... www kernel: 38 8t2r0i0e dt rtioe du stedo nutoshner- 2pn ropeisde nn8t8 2-2psr3c hetesrdeinetd _ sytciohe eldd_ Message from syslogd@www at Mar 9 15:18:29 ... www kernel: 83s2>c0cm8d tthr2 pidd t8o8 us208e tnroine-dp rteos eunhseetd nsocnh-epdr_eysieenltdr Message from syslogd@www at Mar 9 15:18:31 ... www kernel: rc2m d 20180309 15:21:32 creat.cfg, elapsed 00:06:14 Note: all.sh in stress2/misc is the preferred test to run. run: run time 0+00:05:00, incarnations 1, load 100, verbose 1 15:21:32 Loop #1 creat: run time 0+00:02:00, incarnations 5, load 100, verbose 1 So, I don't think it's the usb-serial adapter.... Thanks for reading! bob prohaska