[smokeping-users] Strange SQRT error

[Sorrell, Al]

Solaris 8, Smokeping 2.2.3, rrdtool 1.2.23, Perl 5.8.5

When attempting a drill down from the 1st level of displayed graphs some
- but not all - graphs using probe=CiscoRTTMonEchoICMP, display the
following error on the resulting web page:

Can't take sqrt of -4.36159e-18 at
/export/appl/smokeping-2.2.3/lib/Smokeping/RRDhelpers.pm line 55.
Or
Can't take sqrt of -4.95635e-19 at
/export/appl/smokeping-2.2.3/lib/Smokeping/RRDhelpers.pm line 55.

i.e, the error is the same but the number varies.

The top-level graphs appear normal and the log file shows nothing
unusual.
No graphs using probe=FPing shows this error.

Thanks for any suggestions.
Al
_________________________
Almon (Al) Sorrell
Network Engineering Consultant
T. Rowe Price - Corporate Network Services
Ph:410-345-3042 Fax:410-345-3030
Al_Sorrell at troweprice.com


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