[smokeping-users] smokeping fping probe with high resolution / low interval possible?

[G.W. Haywood]

Hi there,

On Sat, 25 Aug 2012, Aaron Boerup wrote:

> ... problem with the shortest (most flood-like) interval for
> fping. If I set the hostinterval to anything lower than .1 (which is
> 100ms) then I seem to get nothing but 100% packet loss on the
> graph. Is this an intentional limit? If I do an fping <ip> -p 1 -I 1
> -c 300 I will be able to send all 300 packets in about 4 seconds.

There are several versions of fping in existence and you haven't said
which one you're using.  If you read the man page for it you might
find that fping itself places restrictions on the sorts of things that
can be done by non-privilieged users, and you might discover things
which can only be done by a user with root permissions.  Setting the
interval between packets going to an individual target to something as
low as one millisecond (if that's what '-p 1' does in your version of
fping - it does in at least one of mine and there isn't an '-I' switch
in any of them) is the sort of thing that would usually only be done
by root, as it might be considered abusive.

> I would like to be able to do this kind of granularity for some
> special troubleshooting I am doing.

Perhaps you can be more specific about the troubleshooting.

> My question is a way to get a combined multi-probe graph like you
> get on the summary screen on the detail page. I did some looking and
> didn't see an obvious way to do this.

I don't know what the "summary screen" and the "detail page" are.
You have acess to the full source to do whatever you wish to it, but
there's a lot of fairly densely coded Perl in there and that will be
hard going if you aren't an experienced Perl programmer.

--

73,
Ged.