[hobbit] Memory check

[Michael Lowery]

Ok, I don't have a clear understanding of the memory check.  I do
understand what has been discussed, but I have a Redhat 9 where the
"actual" memory utilized is 96%.  However, when I run: ps vax --sort
-rss, I get the following.  It looks like my actual memory usage
shouldn't be at 96%, is this correct?

  PID TTY      STAT   TIME  MAJFL   TRS   DRS  RSS %MEM COMMAND
 2916 ?        SL     0:00    470   298  2093 2388  0.9 [ntpd]
 2948 pts/1    R      0:00    187    66  2561  684  0.2 ps vax --sort
-rss
 2690 ?        S      0:00  11252   265  6594  612  0.2 /usr/sbin/sshd
 2692 pts/1    S      0:00   2666   588  3775  604  0.2 -bash
  891 ?        S      3:15  30426    24  1415  100  0.0 syslogd -m 0
31227 ?        S      0:00  50692    33  1374   60  0.0
/home/hobbit/client/bin/hobbitlaunch
--config=/home/hobbit/client/etc/client
    1 ?        S      0:04  28806    23  1352   36  0.0 init
 2878 ?        S      0:00   7714   131  4480   36  0.0 [nqmgr]
 2885 ?        S      0:00   4231   190  4481   16  0.0 [smtpd]
 2902 ?        S      0:00   2566   130  4485   16  0.0 [cleanup]
  895 ?        S      0:00    124    18  1349    4  0.0 klogd -x
 1029 ?        S      0:01    520   265  3238    4  0.0 /usr/sbin/sshd
 1043 ?        S      0:00     97   129  1890    4  0.0 xinetd
-stayalive -reuse -pidfile /var/run/xinetd.pid
 1142 ?        S      0:00    340    56  1347    4  0.0 gpm -t ps/2 -m
/dev/psaux
 1151 ?        S      0:00  42450    19  1404    4  0.0 crond
 1185 tty1     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty1
 1186 tty2     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty2
 1187 tty3     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty3
 1188 tty4     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty4
 1189 tty5     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty5
 1190 tty6     S      0:00     98     6  1345    4  0.0 /sbin/mingetty
tty6
31309 ?        S      0:10 185817    16  9287    4  0.0 /usr/sbin/snmpd
-s -l /dev/null -P /var/run/snmpd -a
 2941 ?        S      0:00    473   588  1447    4  0.0 sh -c vmstat 300
2 1>/home/hobbit/client/tmp/hobbit_vmstat.2930 2>&1; mv /ho
 2943 ?        S      0:00    118     7  1408    4  0.0 vmstat 300 2
    2 ?        SW     0:00      0     0     0    0  0.0 [keventd]

Thanks,
Michael

-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk] 
Sent: Wednesday, February 08, 2006 9:47 AM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Memory check

On Wed, Feb 08, 2006 at 09:26:31AM -0500, David Gilmore wrote:
> Ok I understand the concept.  However, I don't want to continue to
receive
> Alerts because Linux is doing exactly what it is designed to do.  Does
> anyone have a script that can clear the buffers and stop hobbit from
paging
> me?  Can I modify the script to only alert when REAL memory is at 100%
or
> higher?  Or do I have to reboot my server ever morning to resolve this
> alert?  I currently have the alerts disabled, but I am concerned that
I
> could miss a critical error

Assuming that you're using the Hobbit client on the Linux box, you
can just configure the client to only go red if the actual memory
usage goes above a certain threshold. In your hobbit-clients.cfg,
you would have

HOST=linux.foo.com
    MEMPHYS 100 101
    MEMACT   80  95
    MEMSWAP  40  70

Then it will stay green as long as the "actual" memory usage is 
below 80%, go yellow when it's between 80-95%, and go red when
it is at 95% or higher.


Regards,
Henrik


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