Date: Fri, 14 Oct 2011 12:14:52 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: Nali Toja <nalitoja@gmail.com> Cc: Alexander Best <arundel@freebsd.org>, Poul-Henning Kamp <phk@phk.freebsd.dk>, FreeBSD Current <freebsd-current@freebsd.org>, Nikolay Denev <ndenev@gmail.com> Subject: Re: [RFC] Prepend timestamp in msgbuf Message-ID: <CACqU3MUznrsT0UD5Dk5sWU%2Bz7cVSPO32GwiubL2qee15=8-cHw@mail.gmail.com> In-Reply-To: <8662jrlor0.fsf@gmail.com> References: <20111014085609.GA3799@freebsd.org> <40448.1318582809@critter.freebsd.dk> <20111014092445.GA11785@freebsd.org> <20111014093406.GA13981@freebsd.org> <8662jrlor0.fsf@gmail.com>
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Hi, On Fri, Oct 14, 2011 at 8:52 AM, Nali Toja <nalitoja@gmail.com> wrote: > Alexander Best <arundel@freebsd.org> writes: > >>> On Fri Oct 14 11, Poul-Henning Kamp wrote: >>> > In message <20111014085609.GA3799@freebsd.org>, Alexander Best writes= : >>> > >>> > >1) would it be possible to prepend those timestamps to the actual co= nsole >>> > >output and not only to the output of demsg? maybe via a sysctl toggl= e? >>> > >>> > The kernel does not know enough about timezones to emit anything >>> > but UTC timestamps. >>> >>> hmm ok. >>> >>> > >>> > >2) my dmesg output contains a lot of these entries: "<118>" >>> > >>> > These are magic markers for syslogd(8) specifying priority. >>> >>> it would be nice, if their output could be turned off via a dmesg flag = imo. >>> >>> > >>> > >3) roughly the first 30 lines of my dmesg output have the timestamp = "[1.0]". >>> > >would it be possible to have more accuracy there? >>> > >>> > No, because we don't know the time until we've found the RTC chip. >>> >>> maybe prepending the output with [??] instead of [1.0] would make more = sense, >>> so users knows that those timestamps are bogus. >> >> maybe the granularity of the timestamps could be limited to a static val= ue? the >> following output doesn't really look pretty: >> >> [7.729516] <118>/dev/ufs/varfs: clean, 879143 free (7407 frags, 108967 b= locks, 0.7% fragmentation) >> [7.891512] <118>Mounting local file systems:WARNING: TMPFS is considered= to be a highly experimental feature in FreeBSD. >> [8.33519] . >> [9.440514] <118>Setting hostname: otaku. >> [9.744516] wlan0: Ethernet address: 00:0f:b5:82:07:c8 >> [9.850516] <118>Starting wpa_supplicant. >> [10.335514] <118>Starting Network: lo0 ath0. >> >> so it would be nice, if trailing zeros got printed out, too. > > Why not make formatting similar to linux/xorg logs, e.g. > > =A0[ =A0 =A031.897] (**) Option "XkbLayout" "us" > =A0[ =A0 =A031.897] (II) XINPUT: Adding extended input device "<default k= eyboard>" (type: KEYBOARD, id 7) > =A0[ 11485.404] (II) 3rd Button detected: disabling emulate3Button > > =A0[ =A0 =A00.000000] Linux version 3.0-ARCH (tobias@T-POWA-LX) (gcc vers= ion 4.6.1 20110819 (prerelease) (GCC) ) #1 SMP PREEMPT Tue Aug 30 08:53:25 = CEST 2011 > =A0[ =A0 =A00.000000] Command line: root=3D/dev/disk/by-uuid/625db1f5-9b5= 1-4d2d-acb7-6726f4d7e199 ro > =A0[...] > =A0[ =A0 15.096862] NET: Registered protocol family 10 > =A0[ =A0 16.792594] [drm] nouveau 0000:01:00.0: plugged DVI-I-2 > =A0[ =A0 26.054186] eth0: no IPv6 routers present > > A way to convert those timestamps to localtime or time delta[1] post-mort= em > via dmesg(8) would be good, too. > well, I do not care for the "pretty" side of the thing, however, this is just a matter length modifier in the string format; should be trivial to fix. - Arnaud > [1] like in tcpdump -ttt >
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