Tracking if disk is busy
wmoran at collaborativefusion.com
Thu Jun 22 22:52:51 UTC 2006
Matt Ruzicka <matt at frii.com> wrote:
> We've got a couple servers that appear to have particularly busy disks and
> I was trying to determine if there is a way to more easily poll this data
> for tracking.
> I'm not sure if this is one of those can't see the forest for the trees
> issues or not, but the only means that I am familiar with to see the
> percentage of time the disk is busy is to run 'systat -vmstat'. I was
> hoping for something more concise that I could run periodically and maybe
> even graph (realizing that watching this might well distort the results).
> It appears that iostat on Solaris gives this information, but I can't seem
> to mimic this functionality with FreeBSD.
> Are there other ways in FreeBSD to pull the percentage of time the disk is
If you instal net-snmp you can get various statistics via snmp. We use
mrtg to graph them. Disk activity is but one.
I haven't messed with the builtin snmp stuff that comes with 6.x, but I've
got in on my list to investigate and see if it's ready to replace the
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