[smokeping-users] Smokeping runnning time - maximum number targets in 5 minutes

[Colin Horsington]

All,

In trying to get 1500+ hosts working on single smokeping system.  After
running smokeping for several days, yet not recieving any output on the
graphs I began measuring the time take to run smokeping *once* across a
given number of probes.  There was a thread sometime ago that did cover this
but no clear conclusion was drawn...(
http://www.ee.ethz.ch/~slist/smokeping-users/msg00237.html and
http://www.ee.ethz.ch/~slist/smokeping-users/msg00236.html)

The server I am runnning is running is a dual 733Mhz with 512Mb RAM with no
signicant load.  It is running smokeping 1.18, Linux kernel 2.4.19 and perl
5.6.1.

Here are the timings for given number of targets...

#(root)-(1)-(ops1) -=> time /usr/sbin/smokeping --nodemon --debug
### fping seems to report in 1 miliseconds
Launched successfully
FPing: probing 527 targets
/usr/sbin/smokeping --nodemon --debug  1.37s user 0.93s system 1% cpu
3:36.37 total

#(root)-(0)-(ops1) -=> time /usr/sbin/smokeping --nodemon --debug
### fping seems to report in 1 miliseconds
Launched successfully
FPing: probing 764 targets
/usr/sbin/smokeping --nodemon --debug  1.41s user 0.30s system 0% cpu
5:16.26 total

#(root)-(0)-(ops1) -=> time /usr/sbin/smokeping --nodemon --debug
### fping seems to report in 1 miliseconds
Launched successfully
FPing: probing 1030 targets
/usr/sbin/smokeping --nodemon --debug  2.06s user 1.68s system 0% cpu
7:22.21 total

#(root)-(0)-(ops1) -=> time /usr/sbin/smokeping --nodemon --debug
### fping seems to report in 1 miliseconds
Launched successfully
FPing: probing 1279 targets
/usr/sbin/smokeping --nodemon --debug  22.89s user 11.05s system 5% cpu
10:49.68 total

The times above excludes the generation of the .rrd files as I ran the above
command twice to ensure they were created...

I have seen some documentation that some probes (that can take only a single
argument) maybe forked for scalability.  Does anyone know or have fping
forking.  I imagine to do this the number of targets per fping would be
limited (i.e. 100) and you would run a number of these in parallel to
scale...?

Tobi, thoughts suggestions?

Thanks,

Colin Horsington

--
Unsubscribe mailto:smokeping-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:smokeping-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/smokeping-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi