disk wait mystery

[Ronald Klop]

On Wed, 30 Jan 2013 06:18:49 +0100, Brett Wynkoop <wynkoop at 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 at 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 at 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 at 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.