excellent info thanks - JL
--- In Jim Jackson <> wrote:
>
>
>
>
> On Wed, 6 Jan 2010, Jon L wrote:
>
> > well I've got nothing running and here is free:
> >
> > ts7500:/home/jon/programs/sjinn# free
> > total used free shared buffers cached
> > Mem: 62912 58116 4796 0 18204 17276
> > -/+ buffers/cache: 22636 40276
> > Swap: 0 0 0
> > ts7500:/home/jon/programs/sjinn#
> >
> > is seems kinda full, is this normal?
>
> Read the second line "-/+ buffers/cache". Linux uses "free" ram as disk
> cache.
>
> > heres the ps -ef:
>
> ps uax might be more informative - it gives memory footprint info. see the
> man page. You could then see what was using the 22M memory used.
>
> > ts7500:/home/jon/programs/sjinn# ps -ef
> > UID PID PPID C STIME TTY TIME CMD
> > root 1 0 0 Jan01 ? 00:00:00 init [2]
> > root 2 0 0 Jan01 ? 00:00:00 [kthreadd]
> > root 3 2 0 Jan01 ? 00:00:00 [ksoftirqd/0]
> > root 4 2 0 Jan01 ? 00:00:00 [events/0]
> > root 5 2 0 Jan01 ? 00:00:00 [khelper]
> > root 26 2 0 Jan01 ? 00:00:00 [kblockd/0]
> > root 48 2 0 Jan01 ? 00:00:00 [pdflush]
> > root 49 2 0 Jan01 ? 00:00:00 [pdflush]
> > root 50 2 0 Jan01 ? 00:00:00 [kswapd0]
> > root 51 2 0 Jan01 ? 00:00:00 [aio/0]
> > root 84 2 0 Jan01 ? 00:00:00 [rpciod/0]
> > root 94 1 0 Jan01 ? 00:00:00 ts7500ctl --getrtc
> > --resetswitch
> >
> > root 111 1 0 Jan01 ? 00:00:01 xuartctl --server
> > root 116 1 0 Jan01 ? 00:07:08 sdctl -z 65536 --nbdserver
> > lun0:
> >
> > root 117 1 0 Jan01 ? 00:00:00 nbd-client 127.0.0.1 7500
> > /dev/n
> >
> > root 119 1 0 Jan01 ? 00:00:00 nbd-client 127.0.0.1 7501
> > /dev/n
> >
> > root 121 1 0 Jan01 ? 00:00:00 nbd-client 127.0.0.1 7502
> > /dev/n
> >
> > root 123 1 0 Jan01 ? 00:00:00 nbd-client 127.0.0.1 7503
> > /dev/n
> >
> > root 125 1 0 Jan01 ? 00:00:06 nbd-client 127.0.0.1 7504
> > /dev/n
> >
> > root 126 2 0 Jan01 ? 00:00:01 [kjournald]
> > root 198 1 0 Jan01 ? 00:00:00 udevd --daemon
> > root 363 2 0 Jan01 ? 00:00:00 [khubd]
> > daemon 496 1 0 Jan01 ? 00:00:00 /sbin/portmap
> > statd 507 1 0 Jan01 ? 00:00:00 /sbin/rpc.statd
> > root 588 1 0 Jan01 ? 00:00:00 /usr/sbin/rsyslogd -c3
> > 103 601 1 0 Jan01 ? 00:00:00 /usr/bin/dbus-daemon
> > --system
> > avahi 613 1 0 Jan01 ? 00:00:00 avahi-daemon: running
> > [ts7500.lo
> >
> > avahi 614 613 0 Jan01 ? 00:00:00 avahi-daemon: chroot helper
> > root 625 1 0 Jan01 ? 00:00:00 /usr/sbin/sshd
> > root 643 1 0 Jan01 ? 00:00:00 /usr/sbin/inetd
> > root 663 1 0 Jan01 ? 00:00:00 /usr/sbin/cron
> > root 764 1 0 Jan01 ttyS0 00:00:00 /bin/login --
> > root 765 764 0 Jan01 ttyS0 00:00:00 -bash
> > root 788 1 0 Jan01 ? 00:00:00 dhclient
> > root 1918 643 0 Jan05 ? 00:00:02 in.telnetd:
> > dhpc-1060l.dhpc.loca
> >
> > root 1920 1918 0 Jan05 pts/1 00:00:00 login -h
> > dhpc-1060l.dhpc.local -
> >
> > root 1921 1920 0 Jan05 pts/1 00:00:01 -bash
> > root 2714 1 0 19:22 ? 00:00:00 xuartctl --port 0 --server
> > --spe
> >
> > root 2812 1 0 19:37 ? 00:00:00 /usr/sbin/apache2 -k start
> > www-data 2814 2812 0 19:37 ? 00:00:00 /usr/sbin/apache2 -k start
> > www-data 2817 2812 0 19:37 ? 00:00:00 /usr/sbin/apache2 -k start
> > www-data 2818 2812 0 19:37 ? 00:00:00 /usr/sbin/apache2 -k start
> > root 2876 765 0 19:40 ttyS0 00:00:00 ps -ef
> > ts7500:/home/jon/programs/sjinn#
> >
> >
> >
> > --- In "david.breton" <dbretonusa@> wrote:
> >>
> >>
> >> Use the free command to see if your used memory is slowly increasing until
> >> it runs out of available memory
> >>
> >> echo 1 > /proc/sys/vm/drop cache to free memory when the free command
> >> output indicates free memory is low
> >>
> >>
> >>
> >>
> >>
> >> --- In "Jon L" <jleslie48@> wrote:
> >>>
> >>>
> >>>
> >>> --- In "Jon L" <jleslie48@> wrote:
> >>>>
> >>>> ts7500:/home/jon/programs/sjinn# tail -f /dev/testuart >t_f.lis
> >>>> -bash: t_f.lis: Read-only file system
> >>>> ts7500:/home/jon/programs/sjinn# tail -f /dev/testuart >tf.lis
> >>>> -bash: tf.lis: Read-only file system
> >>>>
> >>>>
> >>>> is a symptom, I had a gps antenna continually filling an RX buffer
> >>>> /dev/testuart and ever emptying it.
> >>>>
> >>>>
> >>>> shutdown was even disabled:
> >>>>
> >>>>
> >>>> ts7500:~# shutdown now
> >>>> -bash: /sbin/shutdown: Input/output error
> >>>> ts7500:~# man shutdown
> >>>> man: can't resolve /usr/share/man/man8/shutdown.8.gz: No such file or
> >>>> directory
> >>>> No manual entry for shutdown
> >>>> See 'man 7 undocumented' for help when manual pages are not available.
> >>>> ts7500:~# man ls
> >>>> man: can't resolve /usr/share/man/man1/ls.1.gz: No such file or directory
> >>>> No manual entry for ls
> >>>> See 'man 7 undocumented' for help when manual pages are not available.
> >>>> ts7500:~# shutdown -r now
> >>>> -bash: /sbin/shutdown: Input/output error
> >>>> ts7500:~# reboot
> >>>> -bash: /sbin/reboot: Input/output error
> >>>> ts7500:~#
> >>>>
> >>>>
> >>>> eventually just pulled the plug.
> >>>>
> >>>> what happened?
> >>>>
> >>>
> >>>
> >>>
> >>> well, I can't repeat the problem, anyway. the UART port that was hooked
> >>> up to a GPS antenna that I thought was the source of the problem doesn't
> >>> seem to be an issue.
> >>>
> >>
> >
> >
> >
>
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