[hobbit] Agentless clients
bgmilne at staff.telkomsa.net
Thu Jan 5 18:02:52 CET 2006
On Thursday 05 January 2006 18:21, Charles Jones wrote:
> Lets say you have 1000 hosts. Lets then just for fun pretend that it
> will only take 1 second to log into the remote hosts, run several tests,
> and receive the result (it would actually take a bit longer than that).
> 1000 seconds (hosts) / 60 (minutes) = 16.666 minutes to poll those hosts!
> So then you can say oh well just have 2-3 hobbit servers doing the
> polling then. Now you have 3 hobbit servers to deail with, monitoring
> them, upgrading them, etc.
> Now lets look at a *real world* example of how long it takes to ssh in
> and execute a command:
> [hobbit at hobbit ~]$ time ssh myhost.net df -h
> Filesystem size used avail capacity Mounted on
> /dev/dsk/c5t0d0s0 30G 10G 20G 35% /
> /devices 0K 0K 0K 0% /devices
> ctfs 0K 0K 0K 0% /system/contract
> proc 0K 0K 0K 0% /proc
> mnttab 0K 0K 0K 0% /etc/mnttab
> swap 6.6G 1000K 6.6G 1% /etc/svc/volatile
> objfs 0K 0K 0K 0% /system/object
> fd 0K 0K 0K 0% /dev/fd
> swap 6.6G 16K 6.6G 1% /tmp
> swap 6.6G 32K 6.6G 1% /var/run
> /dev/md/dsk/d0 639G 116G 523G 19% /raid
> /dev/md/dsk/d1 807G 504G 304G 63% /raid2
> *real 0m1.912s*
> user 0m0.022s
> sys 0m0.008s
> Almost 2 seconds there....and just for one command.
I keep wondering how long the equivalent snmp query takes ... or in fact
gathering all the data asynchronously via snmp ...
ISP Systems Specialist
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