Date: Wed, 30 Jan 2013 12:05:15 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-arm@FreeBSD.ORG, ronald-freebsd8@klop.yi.org, wynkoop@wynn.com Subject: Re: disk wait mystery Message-ID: <201301301105.r0UB5F5Y018149@grabthar.secnetix.de> In-Reply-To: <20130130053729.0c9e018f@ivory.lan>
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Brett Wynkoop wrote: > > > wynkoop@beaglebone:~ % !ps > > > ps ax > > > PID TT STAT TIME COMMAND > > > 0 - DLs 0:00.02 [kernel] > > > 1 - ILs 0:00.20 /sbin/init -- > > > 2 - DL 0:00.00 [xpt_thrd] > > > 3 - DL 0:01.92 [task: mmc/sd card] > > > 4 - DL 0:00.01 [pagedaemon] > > > 5 - DL 0:00.00 [vmdaemon] > > > 6 - DL 0:00.00 [pagezero] > > > 7 - DL 0:00.02 [bufdaemon] > > > 8 - DL 0:00.02 [vnlru] > > > 9 - DL 0:00.10 [syncer] > > > 10 - RL 17:15.90 [idle] > > > 11 - WL 0:07.91 [intr] > > > 12 - DL 0:00.17 [geom] > > > 13 - DL 0:00.21 [yarrow] > > > 14 - DL 0:00.06 [softdepflush] > > > 15 - DL 0:00.15 [schedcpu] > > > 106 - DL 0:00.00 [md0] > [...] > From the ps man page: > D Marks a process in disk (or other short term, > uninterruptible) wait. > > Note all the D entries in the above ps output. That's normal (on all architectures, not just arm). Those "processes" in square brackets are kernel threads which are uninterruptible (well, for some definition of uninterruptible). So they always have the "D" flag set, even if they don't wait for the disk. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing Handelsregister: Amtsgericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsreg.: Amtsgericht München, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen/-Produkte + mehr: http://www.secnetix.de/bsd One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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