Date: Wed, 30 Jan 2013 17:52:36 +0700 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: Brett Wynkoop <wynkoop@wynn.com> Cc: freebsd-arm@freebsd.org, Ronald Klop <ronald-freebsd8@klop.yi.org> Subject: Re: disk wait mystery Message-ID: <20130130175236.402435ce@X220.ovitrap.com> In-Reply-To: <20130130053729.0c9e018f@ivory.lan> References: <20130130001849.7669e033@ivory.lan> <op.wrpw4bjv8527sy@ronaldradial.versatec.local> <20130130053729.0c9e018f@ivory.lan>
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Hi, On Wed, 30 Jan 2013 05:37:29 -0500 Brett Wynkoop <wynkoop@wynn.com> wrote: > On Wed, 30 Jan 2013 10:39:37 +0100 > "Ronald Klop" <ronald-freebsd8@klop.yi.org> wrote: > > > On Wed, 30 Jan 2013 06:18:49 +0100, Brett Wynkoop <wynkoop@wynn.com> > > wrote: > > > > > Greeting- > > > > > > Can anyone figure out why a mainly idle bone with only 2 user > > > shells via ssh running would have so much in disk wait? > > > > > > 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] > > > 410 - Is 0:00.06 dhclient: cpsw0 [priv] (dhclient) > > > 448 - Is 0:00.07 dhclient: cpsw0 (dhclient) > > > 449 - Is 0:00.01 /sbin/devd > > > 634 - Is 0:00.04 /usr/sbin/sshd > > > 638 - Is 0:00.55 /usr/sbin/cron -s > > > 682 - Is 0:00.64 sshd: wynkoop [priv] (sshd) > > > 685 - S 0:00.29 sshd: wynkoop@pts/0 (sshd) > > > 678 u0 Is+ 0:00.19 /usr/libexec/getty std.9600 ttyu0 > > > 686 0 Ss 0:00.74 -csh (csh) > > > 831 0 R+ 0:00.16 ps ax > > > wynkoop@beaglebone:~ % > > > > > > -Brett > > > > > > > Hi, > > > > Maybe I missed a previous email, but you don't provide much > > information for people to think about. > > As a start you might show the 'disk wait' output. > > > > Ronald. > > > > Ronald- > > 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. > how I understand the system, I would say that these tasks are all swapped out to disk. Erich
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