"EKL" <En-Kuang_Lung@raytheon.com> wrote:

]Would someone please give me some pointers on a trend analysis on resource
]leaks for Solaris 9 and LynxOS (or in general on UNIX machines). Basically,
]I need statistics to determine how often I need to restart these machines to
]avoid unplanned failures. Thanks.

For the statistics, I run a program that checks various things, such as swap
usage, swap activity, cpu usage, disk usage, i-node usage, network errors etc
and log that using rrdtool. I then display daily stats, and yearly stats so I
can get trends and predict when a filesystem will fill up etc. This works very
well.

For re-boots - many will say that you don't need to. From experience, you dont
need regular reboots, but if you install an application or patch, you should
consider scheduling an attended re-boot shortly afterwards when it suits
everyone. You want to make sure it still boots cleanly in case of an
unscheduled unattended reboot later on. You want to make sure that everything
starts up as it should from a re-boot.